Taxonomy of 16 indigenous ciliate species (Protozoa, Ciliophora) from South Korea Author Kim, Ji Hye Natural Science Research Institute, Gangneung-Wonju National University, Gangneung, Republic of Korea Author Omar, Atef Natural Science Research Institute, Gangneung-Wonju National University, Gangneung, Republic of Korea & Department of Zoology, Al Azhar University, Assiut, Egypt Author Jung, Ji Hye Moon and Jae-Ho text Journal of Species Research 2020 9 4 427 442 journal article 10.12651/JSR.2020.9.4.427 2713-8615 13139398 3. Amphisiella sinica Li, Zhao, Ji, Al-Rasheid, Al-Farraj & Song, 2016 ( Fig. 3 ) Material examined. Marine water with some debris (salinity, 30.7‰) collected from Anin Beach , Gangdong-myeon , Gangneung-si , Gangwon-do , Korea ( 37°44′4.7″N 128° 59′ 24.2″E ) on 22 Jan 2019 . Diagnosis. Body size in vivo about 110-170 × 30-40 μm (n = 5); elongate elliptical to fusiform with anterior portion slightly cephalized and curved leftwards; 2 macronuclear nodules; two kinds of colorless cortical granules: larger granules grouped along dorsal kineties; smaller distributed on whole cortex; ring-shaped structures with shallow brim, in anterior and posterior body portions; 55 adoral membranelles on average; median cirral row extends to transverse cirri, and consists of about 47 narrowly spaced cirri; left and right marginal row composed of about 44 and 43 cirri, respectively. Distribution. China and Korea . Remarks. The Korean population of A. sinica resembles the type population ( Li et al. , 2016 ). It is also similar to A. annulata in the body size, the general cirral pattern, the two macronuclear nodules, and the two types of cortical granules ( Li et al. , 2007 ). However, they differ mainly in the number (many vs. few or absent) and the arrangement (in anterior and posterior part vs. if present, scattered in whole cytoplasm) of the ring-shaped structures, and the shape of the anterior body portion (cephalized vs. non-cephalized). Fig. 3. Photomicrograph of Amphisiella sinica in vivo (A- C) and after protargol impregnation (D, E). A. Typical body shape in vivo . B. Cytoplasmic inclusions details (arrowheads mark ring-like structures). C. Cortical granulation around dorsal bristles (arrowheads) and patchlike smaller cortical granules (arrows). D. Ventral ciliature. E. Dorsal kineties. DB, dorsal bristles; DK, dorsal kinety. Scale bars = 50 μm (A, B, D); 20 μm (C). Voucher slides. Two slides with protargol-impregnated specimens were deposited at National Institute of Biological Resources (NIBRPR0000110188, NIBRPR0000110 189).