Monomicrocaryon, Foissner, 2016

Min, Kang-San Kim and Gi-Sik, 2018, Brief morphological description of stichotrichid ciliates (Ciliophora: Stichotrichia) from Korea, Journal of Species Research 7 (4), pp. 323-332 : 327-328

6. Monomicrocaryon crassicirratum Foissner, 2016

( Fig. 6 )

Material examined. Soil sample from Wangsan-ri, Jung-gu, Incheon, Korea (37°26ʹ47ʺN, 126°23ʹ40ʺE), on February 2018 .

Diagnosis. Cell size 85-100 × 40-45 μm in protargol preparations, oval shape; 24-27 adoral membranelles; cortical granules lacking; 2 macronuclear nodules, 1 micronucleus between macronuclear nodules; 18 frontal-ventral-transverse cirri, 3 frontal, 1 buccal, 4 frontoventral, 3 postoral ventral, 2 pretransverse ventral, and 5 transverse cirri; 1 left (16-19 cirri) and 1 right (16-20 cirri) marginal cirral row; 6 dorsal kineties (4 dorsal and 2 dorsomarginal kineties); 3 conspicuous caudal cirri.

Remarks. Monomicrocaryon crassicirratum can be distinguished from other Monomicrocaryon species by the following combination of features: moderate body size; conspicuous large cirri and caudal cirri; adoral zone of membranelles that occupies more than 40% of the body length; dorsal bristles that are 5-10 μm long; paroral and endoral membrane, parallel and almost straight; left pretransverse cirrus near the level of the last postoral cirrus ( Fig. 6 ) ( Foissner, 2016).

Deposition. Two slides ( NNIBR2018113 IV1943, NNIBR2018113 IV1944) have been deposited at the Nakdonggang National Institute of Biological Resources ( NNIBR), South Korea .

Figures

Fig. 6. Photomicrographs of Monomicrocaryon crassicirratum from life (A) and after protargol impregnation (B-D). (A-B) Ventral views. (C) Arrow indicates micronuclei. (D) Dorsal view. Scale bars=50 μm.