Pseudogemma pachystyla Collin, 1912

Fig 1 b.

Ectoparasitic species with sacciform loricate body. There is single, short, thick, rod-like tentacle by which the parasite attaches to the apical part of the host (suctorian ciliates) body. The tentacle as a rule completely dipped into host cell body. Reproduction by endogenous budding.

Dimensions: body length 18–24; body width 16–20. Previous measurements: body length 20–30; body width 12–25.

Material examined. Found as ectoparasite of Periacineta buckei, epibiont of: Ranatra sp. 1 . Mexico. Tecocomulco lake. State of Hidalgo. 2530 m.a.s.l. (19° 52’ 30.5” N; 98° 23’ 41.2” W). 15.09.2007.

Additional records. Brackish water from Béziers and the channel of the port of Cette; ectoparasite of Acineta tuberosa (Matthes et al. 1988) .