New records of 24 ciliate species (Protozoa, Ciliophora) collected in South Korea Author Kim, Ji Hye Natural Science Research Institute, Gangneung-Wonju National University, Gangneung, Republic of Korea Author Jung, Ji Hye Moon and Jae-Ho text Journal of Species Research 2018 7 4 291 314 journal article 10.12651/JSR.2018.7.4.291 2713-8615 13163147 6. Stylonychia lemnae Ammermann and Schlegel , 1983 ( Fig. 6 ) Material examined. Freshwater with some debris collected from Gyeongpocheon River , Unjeong-dong , Gangneung-si , Gangwon-do , Korea ( 37°47 ʹ 20 ʺ N , 128°54 ʹ 34 ʺ E ) on January 28, 2017 . Diagnosis. Body size 145-230 × 60-85 μm in vivo ; 84- 195 × 32-91 μm after protargol impregnation; body ellipsoidal; one contractile vacuole at mid-body of left cell margin; 2 ellipsoidal macronuclei; about 3 spherical micronuclei; undulating membranes Stylonychia -like pattern; 30-69 adoral membranelles; 3 frontal cirri; 1 buccal cirrus; 4 frontoventral cirri; 3 postoral cirri; 2 pretransverse cirri; 5 transverse cirri; 20-23 left marginal cirri; 15-36 right marginal cirri; 3 caudal cirri; 6 dorsal kineties: kinety 3 composed of 35-40 dikinetids, kinety 4 composed of 40-46 dikinetids. Distribution. Cosmopolitan. Remarks. Stylonychia lemnae is very similar to the S. mytilus complex and, according to the key to species ( Berger, 1999 ), differs in the number of dikinetids in dorsal kinety 3 (33-40 vs. 44-66) and 4 (30-39 vs. 40-56). The Kore- an population of S. lemnae exhibits an intermediate morphology between other S. lemnae populations and S. mytilus , i.e., the range of dikinetids in dorsal kinety 3 (35- 40) is in S. lemnae and 4 (40-46) is in S. mytilus . However, the number of dorsal dikinetids in kinety 4 is relatively small even though the range is within S. mytilus . Therefore, we assigned this species in S. lemnae . Voucher slides. Two slides of protargol-impregnated specimens were deposited at National Institute of Biological Resources, Korea (NIBRPR0000109468, NIBRPR0000109469).