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Nematode in the picture: Teratocephalus costatus Andrássy, 1958

Published on
March 1, 2019

The terrestrial nematode genus Teratocephalus de Man, 1876, includes at present 29 bacteria feeding species. They occur particularly on mosses and sometimes in semi-aquatic habitats world-wide (including Antarctica).

Teratocephalus costatus lippen, amphiden 2.jpg

Their morphology makes them easy to recognize: all are relatively small with a strongly annulated cuticle. Males are rare. Although they do not have any phasmids nor a bursa, they were often placed within the Rhabditida (=”Secernentia” or “Phasmidia”). At present they are positioned in clade 7 of the basal Chromadoria (see also van Megen et al., 2009).