Mniobia tentans Donner, 1949

Lee, Sue Yeon, Yoo, Jung Sun & Kim, Seung Tae, 2017, New records of 13 rotifers including Bryceella perpusilla Wilts et al., 2010 and Philodina lepta Wulfert, 1951 from Korea, Journal of Species Research 6, pp. 26-37 : 33

10. Mniobia tentans Donner, 1949

Mniobia tentans Donner, 1949, pp. 126-128 , Abb. 8; Donner, 1965, p.250, 252, fig. 185; Donner, 1971, pp. 374-375, Abb. 4i.

Material examined. Three specimens found in wet mosses at a stream around Gyeryongsan, Gongju-si , Chungcheongnam-do, 36°20 ʹ 47.7 ʺ N 127°12 ʹ 22.9 ʺ E, 7 May 2016 .

Diagnosis. Body reddish and very finely stippled. Corona much wider than cingulum width. Upper lip arched, bilobed medially and much lower than trochal discs; a depression between two lobes much narrower than each lobe’s width. Sulcus somewhat narrower than pedicel width. First foot pseudosegment with a hump dorsally.

Measurements. Greatest trunk width in feeding 84 μm. Corona width 77 μm. Cingulum width 59 μm. Cingulum pad width 58 μm. Spur length 10 μm.

Remarks. This species has been reported from Europe ( Donner, 1965; Devetter, 2007; Schöll and Devetter, 2013) and the Arctic ( Kaya et al., 2010) since its description from Austria. In Asia, it was recorded from Tibet by Gong (1983) (reviewed in Zhuge et al., 1998).

The morphology of the Korean specimens is most similar to that of var. 4 in Donner (1971) in the following characteristics: (1) the corona is much wider than cingulum, (2) lateral margins of cingulum pads are rath- er parallel medially, and abruptly tapering posterioly, and (3) the first foot pseudosegment has a hump dorsally.

World distribution. Europe, the Arctic, Tibet and Korea.

Deposition. Deposited in the collection of the National Institute of Biological Resources, Incheon, Korea (ZIIY IV0000001546, ZIIYIV0000001547, ZIIYGR0000000 002).