Trochilioides recta (Kahl, 1928) Chen et al., 2011

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 : 384-386

6. Trochilioides recta (Kahl, 1928) Chen et al., 2011

( Fig. 6 )

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 31-42 × 21-27 μm after protargol impregnation; body shape oval; cytostome in anterior 1/5 of cell; 6 nematodesmal rods; 5 right kineties; 7-9 left kineties; 5 or 6 postoral kineties; 2 rightmost kineties extending to anterior left side; 2 or 3 circumoral kineties; 4 terminal fragments arranged almost horizontally; and single ellipsoidal macronucleus.

Distribution. Korea, Austria, China, Germany, and North America.

Remarks. The Korean population of Trochilioides recta is peculiar in the number of circumoral kineties (two or three). Of the specimens examined, only one specimen had three circumoral kineties, but the number of circumoral kineties are almost invariable in the specific level ( Pan et al., 2013b).

Voucher slides. Two slides with protargol-impregnated specimens were deposited at National Institute of Biological Resources (NIBRPR0000109480, NIBRPR0000109 481).

Figures

Fig. 6. Trochilioides recta after protargol impregnation. A, B. Ventral views showing somatic kineties, three rows of circumoral kineties, macronucleus, and the strongly curved cytopharyngeal basket. C. Dorsal view showing dorsally extended right kinety. Scale bars=20μm.