Tridentellia Gerlach & Riemann, 1973

Venekey, Virag, Gheller, Paula F., Kandratavicius, Noelia, Cunha, Beatriz Pereira, Vilas-Boas, Ana Carolina, Fonseca, Gustavo & Maria, Tatiana F., 2019, The state of the art of Chromadoridae (Nematoda, Chromadorida): a historical review, diagnoses and comments about valid and dubious genera and a list of valid species, Zootaxa 4578 (1), pp. 1-67 : 53

Genus Tridentellia Gerlach & Riemann, 1973

The monospecific genus Tridentellia was described by Filipjev (1946) under the name Tridentella from New Siberian Islands and was never recorded again. Later this genus was renamed by Gerlach & Riemann (1973) to avoid homonymy with a Crustacean. The only species known, T. crenopharynx Filipjev, 1946 , was based on a single poorly described immature female. In the description, Filipjev (1946) considered Statenia as the closest genus, which was synonymized with Spiliphera by Wieser (1954), who did not mention Tridentellia in his review. Gerlach & Riemann (1973) recognized Tridentellia as a valid genus in sub-family Acantholaiminae (family Comesomatidae ) but Lorenzen (1994) transferred this genus (together with Acantholaimus ) to Spilipherinae considering position of ovaries in relation to intestine and presence of a single anterior testis—characters which are holapomorphies of Chromadoridae . In the description of Tridentellia by Filipjev (1946) there is no mentioning about the position of ovaries in relation to intestine and as it was based in a female there is no data about testis. In the recent review of Tchesunov (2014) Tridentellia was omitted without explanation and considering all information presented here we consider it an invalid genus.

Genus Tridentellia Gerlach & Riemann, 1973

1. Tridentellia crenopharyncx Gerlach & Riemann, 1973 (New Siberian Islands)

Syn. Tridentella crenopharyncx Filipjev, 1946