Discophrya ochthebii Matthes, 1954

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 : 57

Discophrya ochthebii Matthes, 1954

Fig. 3 a.

Suctorian ciliate with flattened disk-like body, and cone-shaped short stalk with transversal ridges. Numerous long, clavate, contractile tentacles distributed over edge of body. Macronucleus spherical or ovoid, centrally located. A group (12–29) of contractile vacuoles placed near edges of body, or (when their number is greatest) thorough the body is characteristic. Reproduction by inversogemmic budding.

Dimensions: body length 26–50; body width 43–69; macronucleus 4–9 x 21–32; contractile vacuole diameter 3–4; length of tentacles 23–26; width of apical part of stalk 26–31. Previous measurements: body length 40–91; body width 43–124; length of stalk 9–45.

Material examined. Found as epibiont of: Plea leachi . Ukraine. Small lake in high-water bed of Psel river near mouth of Ol’shanka river. 16.07.1988. Former river-bed of Goryn’ river near village Stavok, Rovno region. 0 4.07.1985. Small lake in high-water bed of Dnieper river (left bank) near Kiev. 0 7.08.1985. River Oster near city Nezhyn, Chernigov region. 17.09.1985. Small lake in high-water bed of Dnieper river (left bank) near Kiev. 24.11.1985. Lake Lyubyaz’ near village Lyubyaz’ (high-water bed of Pripyat’ river), Volyn’ region. 0 8.06.1986. Small lake in high-water bed of Pripyat’ river near village Kopachi, (zone of Chernobyl’ accident). 11.06.1987. Former river-bed of Psel river near village Vorozhba, Sumy region. 13.07.1988. Former river-bed of Psel river near village Sary, Poltava region. 21.07.1988. Small lake in high-water bed of Psel river near villages Perevoz and Savintcy Poltava region. 22.07.1988. Small lake in high-water bed of Severskij Donets river near village Cherkasskij Bishkin’, Kharkov region. 10.08.1989. Small lake in high-water bed of Severskij Donets river near village Morozovka, Kharkov region. 11.08.1992. Small lake in high-water bed of Vorskla river near village Luchki, Poltava region. 0 7.07.1997. Small lake in high-water bed of Psel river near village Borovoe, Sumy region. 11.07.1988.

Additional records. On aquatic coleopteran Ochthebius sp. Thomson ( Matthes et al. 1988).

Figures

FIGURE 3. Some epibiotic suctorians of nepomorphans. a. Discophrya ochtebii. b. Tokophrya quadripartita from Lethocerus sp. (Mexico). c. Podophrya fixa. d. Kormosia linguifera. e. Metacineta longipes.