Uronemita binucleata (Song, 1993)

Kim, Ji Hye, Omar, Atef & Jung, Ji Hye Moon and Jae-Ho, 2020, Taxonomy of 16 indigenous ciliate species (Protozoa, Ciliophora) from South Korea, Journal of Species Research 9 (4), pp. 427-442 : 440

16. Uronemita binucleata (Song, 1993)

Liu, Gao, Al-Farraj & Hu, 2006 ( Fig. 16 )

Material examined. Marine water collected from a beach in Jukgyodong, Mokpo-si, Jeollanam-do, Korea (34°47′ 18.5″N 126°21′57.8″E) on 14 Sep 2019 .

Diagnosis. Body size about 20 × 11 μm after protargol impregnation (n = 10); body inverted pear-shaped; frontal end truncated and with conspicuous apical plate; 2 spherical macronulear nodules; cytostome ends posterior to mid-body; about 17 somatic kineties, each kinety comprises of dikinetids anteriorly and monokinetids posteriorly; caudal cilium as along as body.

Distribution. China and Korea.

Remarks. Uronemita binucleata is most similar to U. parabinucleata , both species have two macronuclear nodules but differ mainly in the number (about 17 vs. 22 or 23) of somatic kineties ( Liu et al., 2016). These two species differ from all other congeners in having two (vs. one) macronuclear nodules.

Voucher slides. Two slides with protargol-impregnated specimens were deposited at National Institute of Biological Resources (NIBRPR0000110217, NIBRPR0000110 218).

Figures

Fig. 16. Photomicrograph of Uronemita binucleata, details of somatic and oral ciliature after protargol impregnation(A, B). K1-n, somatic kineties; M1-3, oral membranelles; PM, paroral membrane; SC, scutica. Scale bars=10 μm.