Uronema nigricans ( Müller, 1786 ) Florentin, 1901

Chae, Kyu-Seok, Jung, Jongwoo, Lee, Won Je & Min, Gi-Sik, 2022, Unrecorded species of Korean protozoans discovered through the project of ‘ Discovery of Korean Indigenous Species’ II, Journal of Species Research 11 (4), pp. 335-342 : 340

16. Uronema nigricans ( Müller, 1786) Florentin, 1901

ϥπƞ꼬ƞḑAEệ (ṵÿ) ( Fig. 4E, F )

Cyclidium nigricans Müller, 1786 .

Material examined. Seo-gu (37°32′33.12″N, 126°37′ 11.12″E), Incheon, South Korea; 13 January 2020.

Deposition. NIBRPR0000111047.

World distribution. Cosmopolitan.

Diagnosis. Cells are 20-35 μm long with a truncated apical plate; pellicle thin and inconspicuously notched, with ridges located longitudinally along ciliary rows. There are 10-15 somatic kineties; somatic kinety 1 usually shortened, posterior end extending at about 3/4 to 4/5 of the cell. The oral apparatus is typical of the genus. The membranelle 1 is clearly separated from other membranelles.

Figures

Fig. 4. Photomicrographs of Ciliophora (A-H). A, B, ventral (A) and dorsal (B) view of Monomicrocaryon saprobia after protargol impregnation; C, D, general appearance of Parauronema virginianum. E, F, general appearance of Uronema nigricans; G, H, general appearance of Cyclidium varibonneti; BF, buccal field; CC, caudal cilium. Scale bars: A, B=50μm; C-H=10μm.