Sinocallipus catba Stoev & Enghoff 2011

Maximal lengthca50 mm, width of midbody PT 2.4 mm, 67–69 PT + telson. Body colour: uniformly white-yellowish, without particular coloration pattern; metazonites without posterior band. Head: uniformly white, cephalic suture visible. Antennae: long, extending beyond the posterior edge of PT 9 when folded backwards; antennomeres 2–5 light brown; 1, 6, 7 – white (Fig. 1); length of antennomeres: 1 – 0.3 mm, 2 – 1.4 mm, 3 – 1.8 mm, 4 – 1.2 mm, 5 – 1.3 mm, 6 – 0.7 mm, 7 – 0.4 mm; antennomere ratio: 3>2>5>4>6>7>1; tip of antennomere 7 with four cones protruding beyond posterior margin (Fig. 2). Eyes: black, well delineated, composed of 33 ocelli in 5 rows (Fig. 3). Width of PT 2=3<1=4<5<6<7. PT higher than broad, ratio: 1.05 : 1. Dorsal side of collum and PT2–3 smooth, lateral sides ribbed. Crests poorly developed, broad and flattened anteriorly, abruptly narrowing and more pronounced posteriorly; 5+5between the ozopores on midbody PT. Ozopores small, barely visible on most PT, lying between crests 5 and 6 in midbody PT. Paraprocts divided into smaller dorsal and larger ventral sclerites. Dorsal sclerite surmounted with two macrosetae in a vertical row. Spinnerets: long and slender, ending with a long seta. All legs white-yellowish, long and slender, ending with a long claw. Tarsal pads very poorly developed, present on leg-pairs 3–12. No particular modifications on coxae of pregonopodal legs, prefemora of legs 4–7 swollen. Leg-pair 9 (Figs 4, 26): coxa subtrapezoidal; trochanter expanded medio-ventrad forming a rather elongated process (h) with a pointed tip and a smaller processz. Chaetotaxy: unknown, all setae broken off. Gonopods (Fig. 5): similar to those of congeners; coxae (cx): processgmoderately large and swollen, ca1.5 times the length of processk; processesgandkapically rounded, not truncated as inSinocallipus jaegeri. Femoroid (fe): with three slender, acicular (n), and one short and subfalcate (m) terminal projections. Cannula (ca): long, and slender, not coiled. unknown.

Description of locality. This species was found in two moderately long, humid caves. Tien Duc is approximately 100 m long, while Hoa Cuong is 100–120 m long. In Tien Duc, the specimen was found on non-humid walls. Both caves host a rich cave fauna, including unidentified cambalopsid and haplodesmid millipedes (L. Deharveng, in lit.).