10. Specaria josinae (Vejdovský, 1884) (Fig. 10)

ÜĿ ẖmǵÑ (ṵAE)

Nais josinae Vejdovský. Vejdovský, 1884, p. 29, pl. 2, figs. 25 - 28, pl. 3, figs. 1 - 4.

Specaria josinae (Vejdovský) . Sperber, 1948, p. 95, figs. 9, 26d, pl. 4, pl. 5, fig. 1.

Material examined. Incheon-si (37°35′36.08″N, 126°27′ 20.57″E), Korea; collected by JH Lee on 31 March 2017.

Deposition. NIBRIV0000862922.

World distribution. China, Europe, Japan, North America and Korea.

Diagnosis. No eyes. Prostomium small without proboscis. Dorsal chaetae from VI, 1 - 2 smooth, bent hairs, with one to two bifid needles chaetae, with precise teeth, equal in length (Fig. 10A). Ventral chaetae bifid, sigmoid from II, 4 - 5 per bundle with upper tooth longer and thinner than lower, posterior only be-coming equally long (Fig. 10B).

Remarks. Specaria josinae has the sigmoid needles that the same shape as the ventral chaetae and are well-developed needle teeth. Previous studies made a mistake in Nais species (Michaelsen, 1900; 1909; Piguet, 1906).