Relictocera sigen Li & Li

Chang, Wan-Jin, Li, Fengyuan & Li, Shuqiang, 2019, On the genera Qiongocera and Relictocera (Araneae, Psilodercidae) from Southeast Asia, ZooKeys 862, pp. 61-79 : 66

Relictocera sigen Li & Li sp. nov. Figs 2D, 3E, 8, 9, 12C, 13

Types.

Holotype: ♂ (IZCAS), Vietnam, Ninh Binh Province, Cuc Phuong National Park, Palace Cave, 20°21.350'N, 105°36.282'E, 523 m, 19.VIII.2015, Zhao Q., Li Y. & Chen Z.

Etymology.

The species name is a noun in apposition derived from the Chinese pinyin " sigen " ("four strips") and refers to the four appendages on the male bulb, including the embolus.

Diagnosis.

See diagnosis for R. wugen sp. nov.

Description.

Male (Holotype). Total length 2.28; carapace 1.00 long, 1.20 wide; abdomen 1.28 long, 0.64 wide. Carapace round, yellow, with 3 longitudinal dark brown bands; the middle band 2 times wider than the lateral band (Fig. 8B). Chelicerae yellow (Fig. 12C). Clypeus pale brown, with quadrifurcate medial projection (Fig. 8A, B). Endites pale brown. Labium brown with 2 large pale spots (Fig. 8C). Sternum brown with median longitudinal pale band not reaching the posterior margin (Fig. 8C). Abdomen dorsally with anterior longitudinal pale-yellow band and pair of lateral dark brown stripes, posteriorly with longitudinal dark brown stripes, venter pale anteriorly, posterior part with scattered dark brown patches. Legs uniformly brown; measurements: I (3.51, 0.40, 5.77, 6.73, missing), II 12.70 (3.53, 0.32, 3.85, 4.00, 1.00), III 9.40 (2.60, 0.40, 2.80, 2.80, 0.80), IV 15.39 (4.49, 0.32, 4.49, 4.81, 1.28). Palp (Fig. 9 A–D): femur 5 times longer than patella; patella not swollen; tibia pale, 2 times shorter than femur, dark distally; cymbium almost completely dark, with long and thin distal protrusion directed forward, slightly oblique; length/width ratio= 3.33; bulb light yellow, globose, with 3 appendages (except embolus); embolus coiled, tapering apically; trifurcate appendages almost equal in length but distinctly shorter than embolus, emerging separately at distal part of bulb, except for one prolateral appendage directed perpendicular to other appendages (Fig. 9B).

Female.

Unknown.

Distribution.

Known only from the type locality (Fig. 13).