Genus Sinocallipus Zhang, 1993

Figs 1 A – D, 10

Sinocallipus Zhang, 1993: 129. Type species: Sinocallipus simplipodicus Zhang, 1993, by original designation.

Sinocallipus catba Stoev & Enghoff, 2011 .

Sinocallipus catba: Stoev & Enghoff, 2011: 16.

Material examined.

Vietnam • 2 ♀♀; Hai Phong Province, Cat Ba National Park, Trung Trang Cave; 20.7887°N, 106.9980°E; May 2012; Anh D Nguyen leg.; IEBR-Myr 542 .

Diagnosis.

Although only female specimens were collected and examined in the present study, the identity of the species is clear and well-supported. S. catba can be distinguished from its congeners by its white-yellowish body (Fig. 1 A), a black eye composed of more than 30 ommatidia (Fig. 1 B), and long antennae that extend beyond the posterior edge of pleurotergite (= PT) 7 when folded backwards. It also has 5 + 5 crests between the ozopores on midbody pleurotergites (= PTs), a gonocoxal process g that is approximately 1.5 × the length of process k, and paraprocts divided into larger ventral and smaller dorsal sclerites (Fig. 1 C; Stoev and Enghoff 2011). The females studied here have well-developed, highly elevated cylindrical cyphopods (Fig. 1 D).

Remarks.

The species is currently known from three caves on Cat Ba Island: Hoa Cuong Cave and Tien Duc Cave (Stoev and Enghoff 2011), and Trung Trang (present study).