New record of 21 ciliate species (Protozoa, Ciliophora) from South Korea Author Jung, Atef Omar and Jae-Ho text Journal of Species Research 2021 10 3 301 320 journal article 10.12651/JSR.2021.10.3.301 2713-8615 13139003 14. Rimaleptus alpinus ( Kahl, 1931 ) Vd ̓ačný and Foissner, 2012 ( Fig. 13D ) Material examined. Terrestrial moss collected from Mungyeong Saejae Provincial Park , Mungyeong-si , Gyeongsangbuk-do , Korea ( 36°45 ʹ 57 ʺ N , 128°4 ʹ 29 ʺ E ) on 29 March 2020 . Diagnosis. Body size about 100 × 20 μm after protargol impregnation (n = 5); body slenderly dileptid with proboscis about 30% of body length; 2 contractile vacuoles on dorsal side; 2 ellipsoidal macronuclear nodules with a single micronucleus in between; about 10 somatic ciliary rows; 2 preoral kineties composed of oblique dikinetids; 2 brush rows with long bristles. Distribution. Australia , Austria , Germany , Netherlands , Slovakia , Japan , and Korea . Remarks. The Korean population of Rimaleptus alpinus agrees with previous descriptions especially from Foissner (1989) . Six species belong to the Rimaleptus alpinus group and characterized by two contractile vacuoles and two dorsal brush rows except R. binucleatus ( Kahl, 1931 ) Foissner, 1984 and R. conspicuus ( Kahl, 1931 ) Vd ̓ačný and Foissner, 2012 which have multi rows. Rimaleptus alpinus can be easily distinguished from other species in the group by the long (vs. short) brush cilia, the less number of ciliary rows (~10 vs. ≥12 on average), and the small- er body size (~100 vs.>120 μm on average) ( Foissner, 1989 ; Vd̓ačný and Foissner, 2012 ). Fig. 14. Photomicrographs of Podophrya bivacuolata from life (A- D), after protargol impregnation (E), and scanning electron microscope (F, G). A, B. Lateral views of swarmers showing the clavate tentacles and the ciliary stripes. C, D. Adult cells with long tentacles and stalk. E. Swarmer showing the cell shape and the ciliary pattern. F, G. Swarmers showing the cell shape and the precursor of the stalk. CV, contractile vacuole; MA, macronucleus; P, stalk precursor; S, stalk; T, tentacles. Scale bars =30 μm (A- D), 20 μm (E, F), and 10 μm (G). Voucher slides. One slide with protargol-impregnated specimens was deposited at the Nakdonggang National Institute of Biological Resources (NNIBRPR20128).