Scepanotrocha corniculata Bryce, 1910

Song, Min Ok & Lee, Chang-Ho, 2021, New records of three monogonont and seven bdelloid rotifers from Korea, Journal of Species Research 10 (4), pp. 392-404 : 400

8. Scepanotrocha corniculata Bryce, 1910 ( Fig. 8 )

ḤȇḆȘḨĒṞệ (ṵḋ)

Scepanotrocha corniculata Bryce, 1910 , pp. 79, 80, pl. 2, fig. 2; Donner, 1965, pp. 102, 103, figs. 78k- n; Donner, 1980, p. 134, figs. 3a, b.

Material examined. One specimen sorted out from mosses at Galcheon-ri, Seo-myeon, Yangyang-gun, Gangwon-do, 37°54′3.0″N, 128° 30′6.4″E, 1 August 2020.

Diagnosis. Upper lip expanded to hood-shaped membrane with shallow median notch as well as bird-beak like lateral processes. Upper lip higher than trochal discs. Corona much narrower than cingulum. Pedicel very short. Cingulum pad narrower than cingulum. Pharyngeal tube as long as trophi length. Neck cylindrical in feeding.

Measurements. Total length in feeding 140 μm. Cingulum width 25 μm. Cingulum pad width 22 μm. Greatest trunk width in feeding 41 μm.

Remarks. The present study is the first report of the genus Scepanotrocha Bryce, 1910 from Korea. Most of the Scepanotrocha species have the hood-like membranous expansion of the upper lip. In Scepanotrocha corniculata , the upper lip expanded to hood-shaped membrane with shallow median notch as well as bird-beak like lateral processes ( Bryce, 1910).

This species has been reported from several countries in Europe ( Donner, 1965; Zullini and Ricci, 1980; Velasco,

1990) and New Zealand ( Shiel and Green, 1996) before the present study, and is new to the Asian fauna.

World distribution. Europe, Korea and New Zealand. Deposition. Deposited in the collection of the National Institute of Biological Resources, Incheon, Korea (KDELIV 0000003120).

Figures

Fig. 8. Scepanotrocha corniculata Bryce, 1910.A. feeding, dorsal view; B, C. feeding, in different focal planes, dorsal view(Scales:A-C=25 μm).