Periacineta notonectae ( Claparède et Lachmann, 1859 ), Claparede et Lachmann, 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 : 58

Periacineta notonectae ( Claparède et Lachmann, 1859)

Fig. 1 f.

Loricate suctorian species. Lorica stalked, slightly flattened, nearly conical, softly curved with wide apical aperture that have oblique cutted edge. Cell body fills up all lorica. Stalk very short and conical. Clavate tentacles are in two apical bundles. Actinophores absent. Macronucleus spherical. Reproduction by inversogemmic budding.

Dimensions: lorica length 113–137; width 45–52; macronucleus diameter 12–15; length of tentacles 30–42; length of stalk 12–18; stalk diameter 9–12. Previous measurements: body length 55–154; body width 29–74.

Material examined. Found as epibiont of: Hesperocorixa laevigata . Mexico. Tecocomulco lake. State of Hidalgo. 2530 m.a.s.l. (19° 52’ 30.5” N; 98° 23’ 41.2” W). 15.09.0 7. Corixa sp. Ukraine. Irpen’ river near village Irpen’, Kiev region. 0 7.11.1998. Small lake in high-water bed of Psel river near mouth of Ol’shanka river. 16.07.1988. Pripyat’ river near village Shchetyn’, Volyn’ region. 0 5.06.1986. Pripyat’ river near village Pochapy, Volyn’ region. 0 2.06.1986. River Zulnya near village Grushovka, Rovno region. 0 9.07.1985. Small lake in highwater bed of river Goryn’ near village Zbuzh, Rovno region. 0 6.07.1985. River Zamchysko near mouth. 0 5.07.1985. Goryn’ river near village Stavok, Rovno region. 0 7.07.1985. River Zarnovka near village Zhobryn, Rovno region. 30.06.1985. Goryn’ river near village Duksin, Rovno region. 30.06.1985. Slovechna river near village Tkhorin, Zhytomir region. 30.09.1984. Pond near village Begun’, Zhytomir region. 25.09.1984. Pripyat’ river near village Bol’shye Soroki, Kiev region. 0 7.09.1984.

Additional records. On Notonecta , Corixa and Sigara ( Matthes et al. 1988) .

Figures

FIGURE 1. Some epibiotic suctorians of nepomorphans. a. Manuelophrya hannae parasite of peritrich epibiont of Lethocerus sp. (Mexico). b. Pseudogemma pachystyla parasite of Periacineta buckei attached to Ranatra sp. (Mexico). c. Discophrya elongata on Ranatra sp. (Mexico). d. Discophrya gessneri epibiont of Aphelocheirus aestivalis (Ukraine); the insert shows the shape of the stalk. e. Discophrya lichteinsteinii found on Ambrysus sp. (Mexico). f. Empty loricaes of Periacineta notonectae from Corixa sp. (Ukraine). g-i. Periacineta buckei from Ranatra sp., Belostoma sp. and Lethocerus sp., respectively (Mexico).