Nannenus menghaiensis Cao & Li

Cao, Qi, Li, Shuqiang & Żabka, Marek, 2016, The jumping spiders from Xishuangbanna, Yunnan, China (Araneae, Salticidae), ZooKeys 630, pp. 43-104 : 61-62

Taxon classification Animalia Araneae Salticidae

Nannenus menghaiensis Cao & Li sp. n. Figs 28, 29, 43

Type.

Holotype ♂: CHINA, Yunnan, Jinghong City, Menghai County, Menghai Village (22°01.702'N, 100°23.700'E, 1188 m), secondary forest, 28 July 2012, Q. Zhao & Z. Chen leg. Paratypes: 1♀, same data as holotype; 1♀, CHINA, Yunnan, Mengla County, Xiaolongha Village, Xishuangbanna Nature Reserve, Biological diversity corridor (21°24.213'N, 101°376.995'E, 834 m), seasonal rainforest, 3 June 2012, Q. Zhao & Z. Chen leg.

Etymology.

The species name is derived from the name of the type locality; adjective.

Diagnosis.

The male resembles that of Nannenus maughami Prószyński & Deeleman-Reinhold, 2012 (see Prószyński and Deeleman-Reinhold 2012: figs 97-99), but the RTA is straight and shorter, about 1/4 the length of the cymbium (Fig. 28B) vs. apically bent in Nannenus maughami . The female can be distinguished from other congeners by the boomerang-like copulatory openings (Fig. 29A).

Description.

Male (holotype). Total length 7.25, CL 3.50, CW 2.43, AL 3.75, AW 1.50. Eye measurements: AME 0.70, ALE 0.32, PME 0.15, PLE 0.25, AER 2.10, PER 2.15, EFL 1.80. Clypeus 0.25 high. Legs: I 6.00 (2.00, 1.10, 1.25, 0.90, 0.75); II 5.45 (1.65, 1.00, 1.20, 0.85, 0.75); III 5.48(1.70, 0.85, 1.00, 1.10, 0.83); IV 6.52 (1.95, 0.92, 1.50, 1.35, 0.80).

Carapace dark brown (Fig. 29C). Lateral eyes with surrounded with black. Chelicerae dark orange-brown, sparsely covered with fine grey hairs. Maxillae brownish with dull white tips and with grey hairs on the inner margins. Labium dark brown, with dull white tip and black hairs. Sternum orange-brown. Abdomen with central light stripe, black laterally. Venter dark greyish. Spinnerets black. Legs I more robust and darker than the other legs, which are yellow. Spination of leg I: femur d2-1-1; tibia v2-2-2; metatarsus v2-0-2. Palpal tibia short, about 1/5 the length of the cymbium, RTA straight, as long as tibia (Fig. 28B). Cymbium bent. Bulb elongate, set obliquely, with peripheral seminal duct. Embolus arising from basal-retrolateral part of the bulb, running parallel to bulb and extending to the tip of the cymbium (Fig. 28C).

Female (one of paratypes, same locality as holotype). Total length 9.26, CL 4.00, CW 2.56, AL 5.26, AW 2.38. Eye measurements: AME 0.79, ALE 0.39, PME 0.08, PLE 0.34, AER 2.28, PER 2.30, EFL 2.10. Clypeus 0.13 high. Legs: I 6.57 (2.15, 1.34, 1.48, 0.90, 0.70); II 6.02 (1.90, 1.20, 1.25, 0.95, 0.72); III 6.11 (1.90, 1.08, 1.00, 1.34, 0.79); IV 7.77 (2.28, 1.18, 1.72, 1.80, 0.79).

Spination of leg I: femur d0-1-0; tibia v2-2-2; metatarsus v2-0-2. Other characters similar to those of male. Epigyne with two rectangular posterior projections and central bulge formed by the copulatory ducts (Fig. 29A). Copulatory openings boomerang-like, located anteriorly. Copulatory ducts short, receptacles round, fertilisation ducts at the anterior part of the receptacles (Fig. 29B).

Distribution.

Known from several localities in Xishuangbanna.