Tokophrya quadripartita (Claparède et Lachmann, 1859)

Fig. 3 b.

Species medium to large, freshwater whose body shape is pyramidal and approximately square in cross section. There are 4 lobe-like prominent actinophores, one at each corner of the apical surface, each bearing a fascicle of capitates tentacles. Lorica absent. Stalk of variable length present. Number of contractile vacuoles varies from 1 to 3. Macronucleus spherical to ovoid, centrally placed. There is one contractile vacuole. Endogenous budding results in an ovoid larval form with variable numbers of ciliary rows and formations (Curds, 1985b).

Dimensions: body length 50–138; body width 20–70; macronucleus 7–16 x 28–58; length of tentacles 20–50; length of stalk 80–220; stalk diameter 4–7. Previous measurements: body length 60–175, body width 18–75, length of tentacles until 90.

Material examined. Found as epibiont of: Lethocerus sp. Mexico. Near Grutas de la Estrella, Ixtapan de la Sal. State of Mexico. 1550 m.a.s.l. (18° 43’ 30.7” N; 99° 35’ 59.1 W). 18.09.2005.

Additional records. On aquatic plants, copepods, over stalk of Epistylis plicatilis Ehrenberg, on Asellus Geoffroy, Triturus sp. Rafinesque (Matthes et al. 1988); on Paludina Lamarck, Cyclops Müller, Chrysemys picta belli (Gray) (Curds, 1985b); on Cambarellus patzcuarensis Villalobos (Aladro-Lubel et al. 2006; Fernandez-Leborans, 2009). On Cyclops, Limnocalanus macrurus Sars, Epischura lacustris Forbes, Eucyclops agilis (Koch & Sars), Cyclops bicuspidatus Claus, Astacus leptodactylus Eschscholtz (Fernandez-Leborans & Tato-Porto, 2000) . On Limnocalanus macrurus, Epischura lacustris and Asellus intermedius Forbes (Morado & Small, 1995) .