Sinocallipus Zhang, 1993

Nguyen, Anh D., Stoev, Pavel & Vu, Tam T. T., 2025, Integrative data reveal a new millipede species of Sinocallipus Zhang, 1993 (Callipodida, Sinocallipodidae) from Vietnam, with notes on its phylogeny, Zoosystematics and Evolution 101 (1), pp. 69-80 : 69-80

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).

Figures

Figure 1. Sinocallipus catba Stoev & Enghoff, 2011. ♀, IEBR-Myr 542 A. Anterior part of body, lateral view; B. Head and ocelli, lateral view; C. Telson, ventral view; D. Cyphopods and leg 2, anterior view. Abbreviations: pa = paraprocts; hy = hypoproct; cy = cyphopods. Scale bars: 1 mm.

Figure 10. Distribution of Sinocallipus Zhang, 1993 in Vietnam.