New records of two pleurostomatids (Ciliophora: Litostomatea) from Korea Author Kim, Se-Joo Author Min, Gi-Sik text Journal of Species Research 2016 2016-10-31 5 3 343 347 http://dx.doi.org/10.12651/jsr.2016.5.3.343 journal article 10.12651/JSR.2016.5.3.343 2713-8615 13141993 Amphileptus litonotiformis Song, 1991 DZḇñqm섬AEệ ( Table 1 , Fig. 1 ) Amphileptus litonotiformis Song, 1991 , p. 300 , Figs. 1 , 2 . Material examined. Specimens were collected from the Incheon public waterfront ( 37°26′N and 126°35′E ), Incheon in the Yellow Sea on 21­29 Jul 2007 . Description. Live cell size 150­225 × 50­75 μm, rugby ball­shaped in outline, beak­like anterior end bent toward dorsal side; body flexible and contractile; laterally compressed at a ratio of about 2: 1; conspicuous longitudinal Fu on right side ( Fig. 1A, B , E­H). Two Ma connected, leaned on dorsal side of body center, usually detectable in live specimens; each nodule egg­shaped, about 22 × 18 μm after fixation; Mi not observed ( Fig. 1H ). One CV recognized at posterior end ( Fig. 1G ). Ex bar­shaped, slightly curved, about 10 μm long; recognizable in live cells under optimal conditions; distributed in front of oral region; some scattered along Nd ( Fig. 1B, I ). Cytoplasm slightly grayish colored, with many brown globules and particles; cortical granules detected on pellicle, densely placed between rows of RSK ( Fig. 1E, G ). Suture formed on anterior region of right side ( Fig. 1D, F ). Cirri and membranelles of feeding hypotrichs detect­ ed after fixation ( Fig. 1J ). Movement by slow gliding, flexible crawling along substrates, or swimming with slow rotation. Ciliary pattern typical of Amphileptus ( Fig. 1C, D, F, G ). Two PK placed around oral slit, PK1 on left, and PK2 on right; kinetid rows more tightly packed than somatic kineties; PK1 contains dense dikinetids in anteri­ or 1/2, and a continuous row of monokinetids reaching to posterior end; PK2 composed of dikinetids, reaches down posterior. DB situated on dorsolateral area, with dense dikinetids in anterior 2/3, and a continuous row of monokinetids, reaches to posterior end. All somatic kineties composed of monokinetids; 10­11 LSK, with PK1 and DB; 20­21 RSK, including PK2. Nd well developed. Distribution. China and Korea (this study). Deposition. A voucher slide with protargol­impregnated specimens was deposited in the National Institute of Biological Resources in Korea (NIBRPR0000107165). Accession number of SSU rDNA. KX581241­KX 581242. Remarks. Amphileptus litonotiformis was originally described by Song (1991) . Characteristics of the Korean population correspond very well with the Chinese population ( Song, 1991 ) in most respects, such as habitat, body shape and size, the number of nuclei, contractile vacuoles, sutures, somatic kineties. However, the Korean population slightly differs from the Chinese population in the distribution of extrusomes (1/2 of oral region vs. whole oral region). Family Kentrophyllidae Wu et al. , 2015 Genus Kentrophyllum Petz, Song et Wilbert, 1995 ṻṄ나șȁ섬AEệṩ impregnated specimens.