2 literature references for Bacteria cyphus Westwood, 1859:

Author: Redtenbacher
Year: 1908
Source: Die Insektenfamilie der Phasmiden. III. Phasmidae Anareolatae (Phibalosomini, Acrophyllini, Necrosciini)., Verlag Engelmann, Leipzig 3:339-589, pls 16-27
Author: Westwood
Year: 1859
Source: Catalogue of the orthopterous insects in the collection of the British Museum. Part I. Phasmidae., British Museum, London 1-196