Epiclintes auricularis rarisetus Hu, Fan, Lin,, 2009

Kim, Ji Hye, Omar, Atef & Jung, Ji Hye Moon and Jae-Ho, 2020, Taxonomy of 16 indigenous ciliate species (Protozoa, Ciliophora) from South Korea, Journal of Species Research 9 (4), pp. 427-442 : 430

4. Epiclintes auricularis rarisetus Hu, Fan, Lin,

Gong & Song, 2009 ( Fig. 4 )

Material examined. Marine water with some debris (salinity, 30.7‰) collected from Anin Beach , Gangdong-myeon , Gangneung-si, Gangwon-do, Korea (37°44′4.7″N 128°59′24.2″E) on 10 Dec 2018 .

Diagnosis. Body size in vivo 250-300 × 25-30 μm (n = 3); elongated and cephalized with long tail; highly contractile; paroral and endoral membrane short and parallel; about 28 adoral membranelles; 2 frontal cirri; 8 frontoventral rows; 4 cirri in frontral row 1; 4-6 cirri in frontral row 2; 5 cirri in frontral row 3; 12 or 13 cirri in frontral row 4; 11-13 cirri in frontal row 5; 11 or 12 cirri in frontal row 6; 7-10 cirri in frontal row 7; 9 or 10 cirri in frontal row 8; 25-27 left marginal cirri; 39-42 right marginal cirri; 13-17 transverse cirri; 22-25 macronuclear nodules; bar-shaped dorsal bristles; and 3 dorsal kineties.

Distribution. China and Korea.

Remarks. The Korean population of Epiclintes auricularis rarisetus corresponds very well with the type population ( Hu et al., 2009). Epiclintes auricularis rarisetus and E. auricularis auricularis (Claparède & Lachmann, 1858) Stein, 1864 are different in the number of adoral membranelles (23-33 vs. 41-71), the number of frontal cirri (2 or 3 vs. usually 0 or 1), the number of frontal rows (8 or 9 vs. usually 11-15), the number of cirri in left marginal row (22-31 vs. 45-63), the number of cirri in right marginal row (35-54 vs. usually 63-129), the number of transverse cirri (10-18 vs. 18-43), and the number of macronuclear nodules (24-70 vs. 40-123) as described by Hu et al. (2009).

Voucher slides. Two slides with protargol-impregnated specimens were deposited at National Institute of Biological Resources (NIBRPR0000110211, NIBRPR0000110 212).

Figures

Fig. 4. Photomicrograph of Epiclintes auricularis rarisetus in vivo (A, B) and after protargol impregnation (C). A. Fully elongated and typical body shape in vivo. B. Detail of dorsal bristles on papillae. C. Ventral ciliature. DB, dorsal bristles; FVR, frontoventral row; TC, transverse cirri. Scale bars=50μm (A); 20 μm (B); 30μm (C).