Macrotrachela libera libera Donner, 1949

Ji, Su-Jung, Jung, Chuleui, Bang, Hyun Woo, Song, Min Ok, Jung, Jongwoo, Yoon, Seong Myeong, Lee, Seunghwan, Keum, Seoyoung, Yang, Hee-Min, Lee, Dongmin, Lee, Geon Hyeok, Oh, Jaeseok, Kim, Kichoon, Park, Hansol, Moon, Heejin, Joharchi, Omid, Kang, Yeseul, Eom, Keeseon S., Lee, Kyung Jin, Eun, Ye, Kim, Taeho, Karanovic, Ivana, Lee, Jeounghee, Choe, Seongjun & Min, Gi-Sik, 2023, Unrecorded species of Korean invertebrates discovered through the project of ‘ Discovery of Korean Indigenous Species’ II, Journal of Species Research 12 (1), pp. 68-89 : 75

15. Macrotrachela libera libera Donner, 1949 ( Fig. 15 )

IJûǖữâ충 (ṵAE)

Macrotrachela libera Donner, 1949, p. 149 , figs. 27a - f.

Material examined. Cheongsong-gun (36°18′57.3″N, 129°13′23.8″E), Korea; collected by CH Lee and MO Song on 18 September 2021 .

Deposition. NIBRIV0000895441.

World distribution. Austria, Germany, Poland and Korea.

Diagnosis. Rostral lamella bilobed and slightly narrower than rostrum end. Corona wider than cingulum. Upper lip lower than trochal discs, rounded triangular, and with a small projection medially. Sulcus much narrower than pedicel width. Pedicel short. Teeth 2/2. First foot pseudosegment plump posterodorsally. Spurs long and conical; outer margin rather straight; inner margin round proximally; with very narrow interspace.

Remarks. The rostral lamella of the Korean specimens is bilobed, while that in the original description was round and without median notch. The corona of the Korean specimens is much wider than cingulum, while that of the original illustration was slightly wider than cingulum.

Order Ploima Hudson and Gosse, 1889 ûšạ

Family Brachionidae Ehrenberg, 1838 ùḑâ충ň

Genus Keratella Bory de St. Vincent, 1822

Hặñâ충ṧ

Figures

Fig. 15. Macrotrachela libera libera Donner, 1949.A. feeding, dorsal view; B. creeping, ventral view. Scale bars=50 μm.