Dicranophorus grandis ( Ehrenberg, 1832 )

Song, Min Ok, 2018, Five new records of monogonont rotifers from Korea, Journal of Species Research 7 (4), pp. 333-339 : 336

3. Dicranophorus grandis ( Ehrenberg, 1832) ( Fig. 3 )

큰̂지코윤충 (신칭)

Diglena grandis Ehrenberg, 1832, p. 137 .

Dicranophorus grandis : Harring, 1913, p. 36; Koste, 1978, p. 468, pl. 170, figs. 1a­c; De Smet, 1997, pp. 67­68, figs. 139­144; Koste and Zhuge, 1998, pp. 200­ 202, figs. 14a­c.

Material examined. One specimen found in Duung wetland, Sindu­ri, Wonbuk­myeon , Taean­gun , Chungcheongnam­do, 36°50 ʹ 10.1 ʺ N 126°11 ʹ 45.5 ʺ E, 30 April 2017 .

Diagnosis. Two small black eye spots. Head about 1/3 of total length. Rostrum short, round anteriorly and de- curved. Trunk with lateral sulci. Foot short, truncated cone­shaped and composed of one pseudosegment. Toes stout, 1/4­1/5 of total length, slightly tapering then abrupt- ly tapering to tips at about 1/5 or 1/6 of toe length distally. Base of rami with triangular alula. Inner margin of rami with 7­9 shearing teeth.

Measurements. Total body length 269 μm. Toe length 46.5 μm. Trophi length 55.3 μm.

Remarks. Among the species of genus Dicranophorus Nitzsch, 1827 , only two species, Dicranophorus epicharis Harring and Myers, 1928 and Dicranophorus forcipatus (Müller, 1786) have been reported from Korea before the present study ( Song and Jin, 2000; Song and Kim, 1989).

Even though D. grandis is probably cosmopolitan because it has been reported from Europe, Africa, Eastern Mediterranean, America, and Australia ( De Smet, 1997; Jersabek and Leitner, 2013), it is new to Korea. In Asia, D. grandis has been recorded from China ( Zhuge et al., 1998), Thailand ( Sa-Ardrit et al., 2013), and Vietnam ( Trinh Dang et al., 2015).

World distribution. Africa, America, Australia, Eastern Mediterranean, Europe.

Deposition. Deposited in the collection of the Nakdonggang National Institute of Biological Resources, Sangjusi, Gyeongsangbuk­do, Korea (NNIBRIV7).

Figures

Fig. 3. Dicranophorus grandis(Ehrenberg, 1832).A. dorsal view; B. dorsolateral view; C. lateral view (Scales:A=100 μm; B, C=50μm).