How to cite the Annual Checklist on the web:

Roskov Y., Ower G., Orrell T., Nicolson D., Bailly N., Kirk P.M., Bourgoin T., DeWalt R.E., Decock W., Nieukerken E. van, Zarucchi J., Penev L., eds. (2019). Species 2000 & ITIS Catalogue of Life, 2019 Annual Checklist. Digital resource at www.catalogueoflife.org/annual-checklist/2019. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-884X.

How to cite the Catalogue of Life monthly edition on the Web:

Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds. (2020). Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta. Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

How to cite individual databases included in this work:

3i Auchenorrhyncha
Dmitriev D.; Sanborn A. & Takiya D. (2020). 3i Auchenorrhyncha: World Auchenorrhyncha Database (version Nov 2017). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

3i Curculio
Yunakov N. (2020). 3i Curculio: 3i taxonomic databases, Curculionidae, subfamily Entiminae (version Jan 2019). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Animal Biodiversity
Zhang Z.-Q. (ed). (2020). Animal Biodiversity: An Outline of Higher-level Classification and Survey of Taxonomic Richness (Addenda 2013) (version 2013). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

AnnonBase
Rainer H. & Chatrou L.W. (eds) (2020). AnnonBase: Annonaceae GSD (version Jan 2014). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

BdelloideaBase
Den Heyer J. & Hernandes F.A. (2020). BdelloideaBase: Bdellid & Cunaxid Databases (version Feb 2013). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Brachiopoda Database
Emig C.C.; Bitner M.A.; Alvarez F. (2020). Brachiopoda Database (version Feb 2016). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Brassicaceae
Warwick S.I.; Francis A. & Al-Shehbaz I.A. (2020). Brassicaceae: Brassicaceae species checklist and database (version 2, Oct 2009). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Brentids
Martin Jon H. & Ouvrard David (2020). Brentids: The White-Files (version 1). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

CarabCat
Lorenz W. (2020). CarabCat: Global database of ground beetles (version Oct 2017). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

CCW
Oosterbroek P. (2020). CCW: Catalogue of Craneflies of the World (version Jul 2013). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

ChiloBase
Minelli A. (ed). (2020). ChiloBase: A World Catalogue of Centipedes (Chilopoda) for the Web (version 1.01, May 2006). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

CilCat
Aescht E. (2020). CilCat: The World Ciliate Catalog (version 4.0, Jan 2012). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

CIPA
Vignes-Lebbe R. & Gallut C. (2020). CIPA: Computer Aided Identification of Phlebotomine sandflies of Americas (version 3, Mar 2011). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

CoL Management Classification
CoL editorial team (2020). CoL Management Classification (version 2020). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Collembola.org
Bellinger, P.F.; Christiansen, K.A.; Janssens, F. (2020). Collembola.org: Checklist of the Collembola of the World (version Apr 2020). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Conifer Database
Farjon A.; Gardner M. & Thomas P. (2020). Conifer Database (version Jan 2014). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Cool
Soulier-Perkins Adeline (2020). Cool: Cercopoidea Organised On Line (version 4). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Droseraceae Database
Culham A. & Yesson C. (2020). Droseraceae Database (version 0.1, Dec 2008). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

ELPT
Söderström L.; Hagborg A. & von Konrat M. (eds.) (2020). ELPT: Early Land Plants Today (version Jan 2019). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

ETI WBD (Euphausiacea)
Brinton E.; Ohman M.D.; Townsend A.W.; Knight M.D. & Bridgeman A.L. (2020). ETI WBD (Euphausiacea): World Biodiversity Database (Euphausiacea) (version 2.1, Nov 2002). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

FADA Cladocera
Kotov A.; Forró L.; Korovchinsky N.M. & Petrusek A. (2020). FADA Cladocera: World checklist of freshwater Cladocera species (version Jan 2013). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

FADA Ephemeroptera
Barber-James H.; Sartori M.; Gattolliat J.-L. & Webb J. (2020). FADA Ephemeroptera: World checklist of freshwater Ephemeroptera species (version Feb 2013). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

FADA Halacaridae
Bartsch I. (2020). FADA Halacaridae: World checklist of freshwater Halacaridae species (version Jan 2013). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

FADA Nematomorpha
Schmidt-Rhaesa A. (2020). FADA Nematomorpha: World checklist of freshwater Nematomorpha species (version Dec 2010). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

FADA Rotifera
Segers H. (2020). FADA Rotifera: Annotated checklist of the rotifers (Phylum Rotifera) (version May 2012). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

FishBase
Froese R. & Pauly D. (eds). (2020). FishBase (version Feb 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

FLOW
Bourgoin T. (2020). FLOW: Fulgoromorpha Lists On the Web (version 8). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Fossil Ginkgoales
Kvaček J. (2020). Fossil Ginkgoales (version Dec 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Global Gracillariidae
De Prins J. & De Prins W. (2020). Global Gracillariidae: Global Taxonomic Database of Gracillariidae (version Jan 2011). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

GloBIS (GART)
Häuser C.; Holstein J.; Kroupa A.S.; Steiner A. & Turiault M. (eds). (2020). GloBIS (GART): Global Butterfly Information System (version Sep 2013). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Gymnodinium
Thessen A. (2020). Gymnodinium: The dinoflagellate genus Gymnodinium checklist (version 0.1). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

HymIS
Kroupa A.S.; Lohrmann V.; Pulawski W.J. & Schmid-Egger C. (2020). HymIS: Hymenoptera Information System (version Jul 2017). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

ICTV_MSL
Lefkowitz E.J. (ed). (2020). ICTV_MSL: International Committee on Taxonomy of Viruses / Master Species List (version Oct 2015). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

ILDIS
Roskov Y.; Zarucchi J.; Novoselova M. & Bisby F. (†) (eds). (2020). ILDIS: ILDIS World Database of Legumes (version 12, May 2014). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

IRMNG
Rees T. (ed.) (2020). IRMNG: The Interim Register of Marine and Nonmarine Genera (version 2019-03). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

ITIS Bees
Ruggiero M.; Ascher J. & al. (2020). ITIS Bees: ITIS World Bee Checklist (version Sep 2009). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

ITIS Selected
Tom Orrell (custodian); Dave Nicolson (ed). (2020). ITIS Selected: The Integrated Taxonomic Information System (version Jun 2017). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Jewel Beetles
Bellamy C.L. (†) (2020). Jewel Beetles: The World of Jewel Beetles (version Aug 2014). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Lace Bugs Database
Guilbert E. (2020). Lace Bugs Database: Lace Bugs Database (Hemiptera: Tingidae) (version Feb 2019). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

LDL Neuropterida
Oswald J.D. (2020). LDL Neuropterida: Neuropterida Species of the World (version Jul 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

LepIndex
Beccaloni G.; Scoble M.; Kitching I.; Simonsen T.; Robinson G.; Pitkin B.; Hine A. & Lyal C. (2020). LepIndex: LepIndex: The Global Lepidoptera Names Index (version 12.3, Jan 2012). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

LIAS
Rambold G. (lead editor; for detailed information see http://liaslight.lias.net/About/Impressum.html and http://liasnames.lias.net/About/Impressum.html) (2020). LIAS: A Global Information System for Lichenized and Non-Lichenized Ascomycetes (version Dec 2015). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

MBB
Burckhardt D. (2020). MBB: Moss Bug Base (version 1.0, Sep 2009). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Microsporidia
Kirk P.M. (2020). Microsporidia: Microsporidia: Unicellular spore-forming protozoan parasites (version Nov 2015). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Mites GSD Ologamasidae
Castilho R.C.; Silva E.S. & Moraes G.J. de (2020). Mites GSD Ologamasidae (version Oct 2009). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Mites GSD Phytoseiidae
Castilho R.C.; Narita J.P.Z.; Moraes G.J. de & McMurtry J.A. (2020). Mites GSD Phytoseiidae (version Sep 2009). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Mites GSD Rhodacaridae
Castilho R.C. & Moraes G.J. de (2020). Mites GSD Rhodacaridae (version Oct 2009). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Mites GSD Tenuipalpidae
Mesa N.C.; Ochoa R.; Welbourn W.C.; Evans G.A.; Castilho R.C. & Moraes G.J. de (2020). Mites GSD Tenuipalpidae (version Nov 2009). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

MOST
Crosby M.R. & Magill R. (eds). (2020). MOST: Moss TROPICOS Database (version 1, Jul 2004). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

MOWD
McKamey S. (2020). MOWD: MOWD: Membracoidea of the World Database (version 1011, Nov 2010). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Nepticuloidea
Nieukerken E.J. van (ed). (2020). Nepticuloidea: Nepticulidae and Opostegidae of the World (version Oct 2016). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Nomen.eumycetozoa.com
Lado; C. & Hernández-Crespo; J.C. (2020). Nomen.eumycetozoa.com: Nomenclatural Database of Eumycetozoa (Myxomycota) (version 2020-03). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Odonata
Tol J. van (2020). Odonata: Global Species Database of Odonata (version Dec 2011). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

PaleoBioDB
Paleobiology Database contributors (2020). PaleoBioDB: The Paleobiology Database (version Feb 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Parhost
Medvedev S.; Lobanov A. & Lyangouzov I. (2020). Parhost: Parhost World Database of Fleas (version 2, Nov 2005). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

PBI Plant Bug
Schuh R.T. (2020). PBI Plant Bug: On-line Systematic Catalog of Plant Bugs (Insecta: Heteroptera: Miridae) (version Mar 2013). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Phoronida Database
Emig C.C. (2020). Phoronida Database (version Feb 2016). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Psyl'list
Ouvrard David (2020). Psyl'list: Psylloidea database (version 2). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Pterophoroidea
Gielis C. & Hobern D. (2020). Pterophoroidea: Catalogue of the Pterophoroidea of the World (version 1.0, Feb 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

ReptileDB
Uetz P. & Hošek J. (2020). ReptileDB: The Reptile Database (version Dec 2015). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

RJB Geranium
Aedo C. (2020). RJB Geranium: Geranium Taxonomic Information System (version Sep 2017). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

ScaleNet
Ben-Dov Y. & Miller D.R. (2020). ScaleNet: Systematic Database of the Scale Insects of the World (version Dec 2004). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Scarabs
Schoolmeesters P. (2020). Scarabs: World Scarabaeidae Database (version 2020-05-31). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Sepidiini tribe
Kamiński M.J.; Kanda K.; Lumen R.; Ulmer J.M.; Wirth C.C.; Bouchard P.; Aalbu R.; Mal N.; Smith A. (2020). Sepidiini tribe: World catalogue of the tribe Sepidiini (Tenebrionidae, Coleoptera) (version 22, 2019-04). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Aphid
Favret C. (2020). SF Aphid: Aphid Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Chrysididae
Baker E. (2020). SF Chrysididae: Chrysididae Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Cockroach
Beccaloni G.W. (2020). SF Cockroach: Cockroach Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Coleorrhyncha
Heads S.W. & Maehr M.D. (2020). SF Coleorrhyncha: Coleorrhyncha Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Coreoidea
CoreoideaSF Team (2020). SF Coreoidea: Coreoidea Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Dermaptera
Hopkins H.; Maehr M.D.; Haas F. & Deem L.S. (2020). SF Dermaptera: Dermaptera Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Embioptera
Maehr M.D. (2020). SF Embioptera: Embioptera Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Grylloblattodea
Hopkins H. & Maehr M.D. (2020). SF Grylloblattodea: Grylloblattodea Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Isoptera
South E.J. after Krishna K.; Grimaldi D.A.; Krishna V. & Engel M.S. (2020). SF Isoptera: Isoptera Species File (version Jan 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Lygaeoidea
Dellapé P.M. & Henry T.J. (2020). SF Lygaeoidea: Lygaeoidea Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Mantodea
Otte D.; Spearman L. & Stiewe M.B.D. (2020). SF Mantodea: Mantodea Species File (version 5.0/5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Mantophasmatodea
Maehr M.D. & Hopkins H. (2020). SF Mantophasmatodea: Mantophasmatodea Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Orthoptera
Cigliano M.M.; Braun H.; Eades D.C. & Otte D. (2020). SF Orthoptera: Orthoptera Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Phasmida
Brock P.D.; Büscher T.; Baker E. & Otte D. (2020). SF Phasmida: Phasmida Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Plecoptera
DeWalt R.E.; Maehr M.D.; Neu-Becker U. & Stueber G. (2020). SF Plecoptera: Plecoptera Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Psocodea
Johnson K.P.; Smith V.S.; Hopkins H. & Eades D.C. (2020). SF Psocodea: Psocodea Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SF Zoraptera
Maehr M.D. & Hopkins H. (2020). SF Zoraptera: Zoraptera Species File (version 5.0, Jun 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Species Fungorum Plus
Kirk P.M. (ed.) (2020). Species Fungorum Plus: Species Fungorum for CoL+ (version Feb 20120). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

SpmWeb
Migeon A. & Dorkeld F. (2020). SpmWeb: Spider Mites Web (version Jul 2011). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

StaphBase
Newton A.F. (2020). StaphBase: Staphyliniformia world catalog database (version Nov 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Strepsiptera Database
Kathirithamby J. (2020). Strepsiptera Database: Global Strepsiptera Database (version May 2017). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Systema Dipterorum
Pape T. & Thompson F.C. (eds). (2020). Systema Dipterorum (version 2.0, Jan 2011). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Taxapad Ichneumonoidea
Yu D.S.K. (2020). Taxapad Ichneumonoidea (version May 2009). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Tessaratomidae Database
Magnien Philippe (2020). Tessaratomidae Database (version 2). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

The Scorpion Files
Rein J.O. (ed). (2020). The Scorpion Files (version Jun 2015). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

The White-Files
Martin Jon H. & Ouvrard David (2020). The White-Files (version 1). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

The World List of Cycads
Calonje M.; Stevenson D.W. & Osborne R. (2020). The World List of Cycads: The World List of Cycads, online edition (version Feb 2019). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

ThripsWiki
ThripsWiki (2020). ThripsWiki: ThripsWiki - providing information on the World's thrips (version Nov 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

TicksBase
Nijhof A.M.; Guglielmone A.A. & Horak I.G. (2020). TicksBase (version 5.6, Jun 2005). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Tineidae NHM
Robinson G.S (†) (2020). Tineidae NHM: Tineidae NHM: Global taxonomic database of Tineidae (Lepidoptera) (version 9.0, Nov 2011). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

TITAN
Tavakilian G. & Chevillotte H. (2020). TITAN: Cerambycidae database (version Apr 2015). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

Trichomycetes
Lichtwardt R.W. (2020). Trichomycetes: Trichomycetes – Fungi Associated with Arthropods (version Oct 2017). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

UCD
Noyes J. (2020). UCD: Universal Chalcidoidea Database (version Sep 2007). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WCSP
Govaerts R. (ed). For a full list of reviewers see: http://apps.kew.org/wcsp/compilersReviewers.do (2020). WCSP: World Checklist of Selected Plant Families (version Aug 2017). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

World Ferns
Hassler M. (2020). World Ferns: Checklist of Ferns and Lycophytes of the World (version Nov 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

World Plants
Hassler M. (2020). World Plants: World Plants: Synonymic Checklists of the Vascular Plants of the World (version Nov 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Amphipoda
Horton T.; Lowry J.; De Broyer C.; Bellan-Santini D.; Coleman C.O.; Corbari L.; Costello M.J.; Daneliya M.; Dauvin J-C.; Fišer C.; Gasca R.; Grabowski M.; Guerra-García J.M.; Hendrycks E.; Hughes L.; Jaume D.; Jazdzewski K.; Kim Y.-H.; King R.; Krapp-Schickel T.; LeCroy S.; Lörz A.-N.; Mamos T.; Senna A.R.; Serejo C.; Sket B.; Souza-Filho J.F.; Tandberg A.H.; Thomas J.; Thurston M.; Vader W.; Väinölä R.; Vonk R.; White K. & Zeidler W. (2020). WoRMS Amphipoda: World Amphipoda Database (version 2019-02-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Antipatharia
Molodtsova T. & Opresko D. (2020). WoRMS Antipatharia: World List of Antipatharia (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Appendicularia
Hopcroft R. (2020). WoRMS Appendicularia: World List of Appendicularia (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Ascidiacea
Shenkar N.; Gittenberger A.; Lambert G.; Rius M.; Moreira Da Rocha R.; Swalla B.J. & Turon X. (2020). WoRMS Ascidiacea: Ascidiacea World Database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Asteroidea
Mah C.L. (2020). WoRMS Asteroidea: World Asteroidea Database (version 2019-02-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Bochusacea
Boxshall G.A. (2020). WoRMS Bochusacea: World List of Bochusacea (version 2019-02-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Brachypoda
Boxshall G.A. (2020). WoRMS Brachypoda: World List of Brachypoda (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Brachyura
Ng P.K.L. & Davie P. (2020). WoRMS Brachyura: World List of marine Brachyura (version 2015-09-01). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Bryozoa
Bock P. & Gordon D. (2020). WoRMS Bryozoa: World List of Bryozoa (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Cephalochordata
Nishikawa T. (2020). WoRMS Cephalochordata: World List of Cephalochordata (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Ceriantharia
Molodtsova T. & Stampar S.N. (2020). WoRMS Ceriantharia: World list of Ceriantharia (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Cestoda
Bray R. & Tyler S. (2020). WoRMS Cestoda: World List of Cestoda (version 2019-03-06). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Chaetognatha
Thuesen E.V. & Pierrot-Bults A. (2020). WoRMS Chaetognatha: World List of Chaetognatha (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Copepoda
Walter T.C. & Boxshall G.A. (2020). WoRMS Copepoda: World of Copepods database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Corallimorpharia
Fautin D.G. (2020). WoRMS Corallimorpharia: World List of Corallimorpharia (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Ctenophora
Mills C.E. (2020). WoRMS Ctenophora: Phylum Ctenophora, a list of all valid species names harvested from the Internet between 1998 - pres (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Cubozoa
Collins A.G. & Jarms G. (2020). WoRMS Cubozoa: World list of Cubozoa (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Cumacea
Watling L. & Gerken S. (2020). WoRMS Cumacea: World Cumacea Database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Echinoidea
Kroh A. & Mooi R. (2020). WoRMS Echinoidea: World Echinoidea Database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Foraminifera
Hayward B.W.; Le Coze F. & Gross O. (2020). WoRMS Foraminifera: World Foraminifera Database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Gastrotricha
Todaro A.; d'Hondt J-L. & Hummon W. (2020). WoRMS Gastrotricha: World Gastrotricha Database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Gnathostomulida
Sterrer W. (2020). WoRMS Gnathostomulida: World List of Gnathostomulida (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Hexacoral
Daly M. & Fautin D. (2020). WoRMS Hexacoral: Hexacorallians (Actiniaria) of the World (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Holothuroidea
Paulay G. (2020). WoRMS Holothuroidea: World List of Holothuroidea (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Hydrozoa
Schuchert P. (2020). WoRMS Hydrozoa: World Hydrozoa Database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Isopoda
Boyko C.B; Bruce N.L.; Hadfield K.A.; Merrin K.L.; Ota Y.; Poore G.C.B.; Taiti S.; Schotte M. & Wilson G.D.F. (eds). (2020). WoRMS Isopoda: World Marine, Freshwater and Terrestrial Isopod Crustaceans database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Kinorhyncha
Neuhaus B. (2020). WoRMS Kinorhyncha: World List of Kinorhyncha (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Leptostraca
Mees J. & Walker-Smith G. (2020). WoRMS Leptostraca: World List of Leptostraca (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Loricifera
Kristensen R. (2020). WoRMS Loricifera: World list of Loricifera (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Merostomata
Boxshall G.A. (2020). WoRMS Merostomata: World List of Merostomata (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS MilliBase
Sierwald P. & Spelda J. (2020). WoRMS MilliBase: MilliBase (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Mollusca
MolluscaBase (2020). WoRMS Mollusca: MolluscaBase (version 2019-03-06). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Monogenea
Gibson D. & Bray R. (2020). WoRMS Monogenea: World List of Monogenea (version 2019-03-06). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Mystacocarida
Boxshall G.A. (2020). WoRMS Mystacocarida: World List of Mystacocarida (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Myxozoa
Adlard R.; Feist S. & Longshaw M. (2020). WoRMS Myxozoa: World list of Myxozoa (version Feb 2013). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Nemertea
Norenburg J.; Gibson R.; Herrera Bachiller A. & Strand M. (2020). WoRMS Nemertea: World Nemertea Database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Octocorallia
Cordeiro R.; van Ofwegen L. & Williams G. (2020). WoRMS Octocorallia: World List of Octocorallia (version 2019-03-06). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Oligochaeta
Timm T. & Erséus C. (2020). WoRMS Oligochaeta: World List of Marine Oligochaeta (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Ophiuroidea
Stöhr S.; O’Hara T. & Thuy B. (eds). (2020). WoRMS Ophiuroidea: World Ophiuroidea database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Orthonectida
Furuya H. (ed). (2020). WoRMS Orthonectida: World List of Orthonectida (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Ostracoda
Brandão S.N.; Angel M.V.; Karanovic I.; Perrier V. & Meidla T. (2020). WoRMS Ostracoda: World Ostracoda Database (version 2018-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Placozoa
Schierwater B.; Eitel M. & DeSalle R. (2020). WoRMS Placozoa: World Placozoa Database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Polychaeta
Read G. & Fauchald K. (eds). (2020). WoRMS Polychaeta: World Polychaeta database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Polycystina
Lazarus D. (2020). WoRMS Polycystina: World List of Polycystina (Radiolaria) (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Porifera
Van Soest R.W.M; Boury-Esnault N.; Hooper J.N.A.; Rützler K.; de Voogd N.J.; Alvarez B.; Hajdu E.; Pisera A.B.; Manconi R.; Schönberg C.; Klautau M.; Picton B.; Kelly M.; Vacelet J.; Dohrmann M.; Díaz M.-C.; Cárdenas P.; Carballo J. L.; Ríos P. & Downey R. (2020). WoRMS Porifera: World Porifera Database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Priapulida
Neuhaus B. (2020). WoRMS Priapulida: World List of Priapulida (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS PycnoBase
Bamber R.N. El Nagar A. & Arango C. (eds). (2020). WoRMS PycnoBase: World Pycnogonida Database (version 2019-03-25). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Remipedia
Koenemann S.; Hoenemann M. & Stemme T. (2020). WoRMS Remipedia: World Remipedia Database (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Rhombozoa
Catalano S. (ed). (2020). WoRMS Rhombozoa: World List of Rhombozoa (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Scleractinia
Hoeksema B.W. & Cairns S. (2020). WoRMS Scleractinia: World List of Scleractinia (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Scyphozoa
Jarms G. & Morandini A.C. (2020). WoRMS Scyphozoa: World list of Scyphozoa (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Staurozoa
Collins A.G. & Jarms G. (2020). WoRMS Staurozoa: World list of Staurozoa (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Tanaidacea
Anderson G. & Blazewicz M. (2020). WoRMS Tanaidacea: World List of Tanaidacea (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Tantulocarida
Boxshall G.A. (2020). WoRMS Tantulocarida: World List of Tantulocarida (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Thaliacea
Madin L. (2020). WoRMS Thaliacea: World list of Thaliacea (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Thermosbaenacea
Poore G. (2020). WoRMS Thermosbaenacea: World List of Thermosbaenacea (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Trematoda
Cribb T. & Gibson D. (2020). WoRMS Trematoda: World List of Trematoda (version 2019-03-06). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Turbellarians
Tyler S. Artois T.; Schilling S.; Hooge M. & Bush L.F. (eds). (2020). WoRMS Turbellarians: World List of turbellarian worms (Acoelomorpha, Catenulida, Rhabditophora) (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Xenoturbellida
Gofas S. (2020). WoRMS Xenoturbellida: World List of Xenoturbellida (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WoRMS Zoantharia
Reimer J. & Sinniger F. (2020). WoRMS Zoantharia: World List of Zoantharia (version 2019-03-05). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WSC
Kropf C.; Nentwig W.; Blick T.; Gloor D.; (organizing board) (2020). WSC: World Spider Catalog (version 20). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WTaxa
Alonso-Zarazaga M.A. & Lyal C.H.C. (authors); Sánchez-Ruiz M. (technical editor). (2020). WTaxa: Electronic Catalogue of Weevil names (Curculionoidea) (version Oct 2016). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

WWW
Maslin B. (2020). WWW: World Wide Wattle (version 2, Jan 2018). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.

ZOBODAT Vespoidea
Gusenleitner J. (2020). ZOBODAT Vespoidea: Zoological-Botanical Database (Vespoidea) (version 4.0, Oct 2011). In: Species 2000 & ITIS Catalogue of Life, 2020-06-04 Beta (Roskov Y.; Ower G.; Orrell T.; Nicolson D.; Bailly N.; Kirk P.M.; Bourgoin T.; DeWalt R.E.; Decock W.; Nieukerken E. van; Penev L.; eds.). Digital resource at www.catalogueoflife.org/col. Species 2000: Naturalis, Leiden, the Netherlands. ISSN 2405-8858.