Loxophyllum chinense Pan, Gao, Lin, Warren and, 2013

Jung, Ji Hye Kim and Jae-Ho, 2019, Brief description of newly recorded eight ciliate species (Protozoa, Ciliophora) collected from South Korea, Journal of Species Research 8 (4), pp. 380-388 : 384

5. Loxophyllum chinense Pan, Gao, Lin, Warren and

Song, 2013 ( Fig. 5 )

Material examined. Brackish water (salinity 3‰) collected from Taehwagang river , Samsan-dong , Nam-gu, Ulsan-si, Korea (35°32 ʹ 55 ʺ N, 129°20 ʹ 12 ʺ E) on 26 September 2018 .

Diagnosis. Body size 110-130 × 30-45 μm in vivo; body shape lanceolate; highly contractile; cytoplasm colorless; extrusomes ventrally scattered, size about 6.0-7.0 × 0.5 μm; about 7-9 warts on dorsal side; 2 or 3 contractile vacuoles located subterminal to ventral side; 1 micronucleus in between 2 macronuclei; 12 or 13 right and 5 or 6 left somatic kineties; 3 perioral kineties; 2 left side furrows present; brackish water habitat.

Distribution. Korea and China.

Remarks. Loxophyllum is a speciose taxon with more than 60 nominal species ( Pan et al., 2013a). The Korean population of Loxophyllum chinense differs from the type population only in the habitat salinity (3‰ vs. ca. 20‰) ( Pan et al., 2013a). L. chinense can be distinguished from the most similar congener, L. perihoplophorum Buddenbrock, 1920 , in the body length (110-130 μm vs. about 400 μm) and the location of contractile vacuoles (ventral vs. dorsal) ( Kim and Min, 2015).

Voucher slides. Two slides of protargol-impregnated specimens were deposited at National Institute of Biological Resources (NIBRPR0000109489, NIBRPR0000109490).

Figures

Fig. 5. Loxophyllum chinense in vivo (A) and after protargol impregnation(B). A. Left side view showing body shape, warts on dorsal side, and contractile vacuoles. Asterisk indicates original body shape under low magnification. B. Right side view showing somatic kineties. Scale bars=50μm.