Tokophrya lemnarum (Stein, 1859)

Mariño-Pérez, Ricardo, Dovgal, Igor & Mayén-Estrada, Rosaura, 2011, New records of suctorians (Ciliophora: Suctoria) as epibionts of aquatic true bugs (Hemiptera: Prosorrhyncha: Nepomorpha) from two regions: Mexico and Eastern Europe, Zootaxa 2798, pp. 48-60 : 54

Tokophrya lemnarum (Stein, 1859)

Fig. 2 c.

Freshwater species whose body shape is piryform to pyramidal. Lorica absent. Fascicles of capitate tentacles mounted on 2 actinophores. Stalk longitudinally striated, of variable length, but usually at least as long as body. There are usually 2 anterior-lateral contractile vacuoles. Macronucleus ovoid to elongate with several micronuclei. Reproduction by endogenous budding producing buds with 4 ciliary girdles ( Curds, 1985b).

Dimensions: body length 30–48; body width 24–35; length of the tentacles 35–50; macronucleus diameter 9– 12; stalk length 60–250; stalk diameter 3–7. Previous measurements: body length 18–127; body width 12–82; stalk length 54–170.

Material examined. Found as epibiont of: Nepa cinerea . Ukraine. Pond near village Begun’, Zhytomir region. 25.09.1984. Naucoris cimicoides . Ukraine. Small lake in high-water bed of river Western Bug near village Kamenka Bugskaya, Lvov region. 0 6.09.1985.

Additional records. On Lemna ( Curds, 1985b) ; on aquatic plants, Asellus aquaticus (Linnaeus) , Astacus leptodactylus , gammarids from Baikal lake ( Curds, 1985b; Matthes et al. 1988); on Gammarus Fabricius , Astacus leptodactylus ( Morado & Small, 1995) ; on Cordylophora caspia Pallas ( Aladro-Lubel et al. 2006) .

Figures

FIGURE 2. Some epibiotic suctorians of nepomorphans. a. Dendrosoma radians (Ukraine). b. Cyclophrya magna (Ukraine). c. Tokophrya lemnarum (Ukraine).