The Species 2000 & ITIS Catalogue of Life

The Species 2000 & ITIS Catalogue of Life is planned to become a comprehensive catalogue of all known species of organisms on Earth. Rapid progress has been made recently and this, the tenth edition of the Annual Checklist, contains 1,257,735 species. Please note that this is probably just about 2/3 of the world's known species. This means that for many groups it continues to be deficient, and users will notice that many species are still missing from the Catalogue.

The present Catalogue is compiled with sectors provided by 77 taxonomic databases from around the world. Many of these contain taxonomic data and opinions from extensive networks of specialists, so that the complete work contains contributions from more than 3,000 specialists from throughout the taxonomic profession. Species 2000 and ITIS teams peer review databases, select appropriate sectors and integrate the sectors into a single coherent catalogue with a single hierarchical classification. It is planned to introduce alternative taxonomic treatments and alternative classifications, but an important feature is that for those users who wish to use it, a single preferred catalogue, based on peer reviews, will continue to be provided.

The Catalogue is published as two products:

Species 2000 & ITIS Catalogue of Life: 2010 Annual Checklist
The Annual Checklist is published each year as a fixed edition that can be cited and used as a common catalogue for comparative purposes by many organisations. A copy is on the DVD, which is distributed free of charge, and an identical copy is on the website at Archived earlier editions are also available on the website. This is the preferred edition for public usage during 2010-2011.

Species 2000 & ITIS Catalogue of Life: Dynamic Checklist
The Dynamic Checklist is a virtual catalogue operated on the Internet and available both for users and as an electronic web-service at The Dynamic Checklist harvests taxonomic sectors and associated strands of hierarchical classification dynamically from the source databases across the internet. The Dynamic Checklist is presently less extensive than the Annual Checklist because fewer taxonomic sectors have been connected so far.

It differs in concept from the Annual Checklist in that
(i) the taxonomic records may be updated and the catalogue changed more frequently than in the Annual Checklist and (ii) the Dynamic Checklist contains additional regional species checklists (such as the Regional Checklist - Europe, effectively a Pan-European Species Checklist) not included in the Annual Checklist. Regional Checklists for N America, China, Australia and New Zealand are in preparation for linkage in the future as part of the Catalogue of Life Regional Hub Network.

The Catalogue of Life partnership

In June 2001 the Species 2000 and ITIS organisations, that had previously worked separately, decided to work together to create the Catalogue of Life, now estimated at 1.9 million species (Chapman, 2009). The two organisations remain separate and different in structure. However, by working together in creating a common product, the partnership has enabled them to reduce duplication of effort, make better use of resources, and to accelerate production. The combined Annual Checklist has become well established as a cited reference used for data compilation and comparison. For instance, it is used as the principal taxonomic index in the GBIF and EoL data portals and recognised by the CBD.

About ITIS

The Integrated Taxonomic Information System (ITIS) is a partnership of federal agencies and other organisations from the United States, Canada, and Mexico, with data stewards and experts from around the world (see The ITIS database is an automated reference of scientific and common names of biota of interest to North America . It contains more than 596,000 scientific and common names in all kingdoms, and is accessible via the World Wide Web in English, French, Spanish, and Portuguese ( ITIS is part of the US National Biological Information Infrastructure ( and an associate member of GBIF

ITIS is managed by Gerald Guala (Director), Thomas Orrell (Deputy Director), Michael Ruggiero (Senior Scientific Advisor), David Nicolson (Data Development Leader), Mike Frame (Information Technology Leader), Roy McDiarmid (Taxonomy Leader), Guy Baillargeon (ITIS-Canada Director), and Patricia Koleff (SIIT-Mexico Director). They are advised and supported by the ITIS Steering Committee and ITIS Data Stewards.

About Species 2000

Species 2000 ( is an autonomous federation of taxonomic database custodians, involving taxonomists throughout the world. Its goal is to collate a uniform and validated index to the world's known species. It is a not-for-profit company limited by guarantee (registered in England No. 3479405) with six directors and taxonomic database organisations from around the world as members. It is sponsored by CODATA, IUBS and IUMS; is an associate participant in GBIF; and is recognised by UNEP and the CBD. The Phase II Programme is establishing a number of regional/national hubs of which the European Hub, the Species 2000 China Node (, the Brazilian Hub (El Catalogo da Vida Brazil) and the N America Hub are the first to appear.

The Species 2000 scientific programme is led by its Team: Guy Baillargeon (Canada), Frank Bisby (UK), Thierry Bourgoin (France), Jerry Cooper (New Zealand), Dennis Gordon (New Zealand), Keping Ma (China), Luciane Marinoni (Brazil), Michael A Ruggiero (USA), Nicolas Bailly (Philippines), Edward Vanden Berghe (Belgium), Richard J White (UK), Karen L Wilson (Australia), with further assistance from the Regional Hubs.