Yaginumaella pseudoflexa, Liu, Wang, Yang, Su-Fang & Peng, Xian-Jin, 2016

Liu, Wang, Yang, Su-Fang & Peng, Xian-Jin, 2016, Two new species of Yaginumaella, Proszynski 1976 from Yunnan, China (Araneae, Salticidae), ZooKeys 620, pp. 57-66 : 59-63

Taxon classification Animalia Araneae Salticidae

Yaginumaella pseudoflexa sp. n. Figs 13-15, 16-18, 19-21, 22-24

Type material.

Holotype: ♂, China: Yunnan: Lushui County: Pianma Township, 25.99363°N, 98.61704°E,1780 m, along the road in town 15 May 2005, G. Tang. Paratypes: 1♂, 3♀, the same data as holotype.

Etymology.

The specific name is the combination of the Latin prefix “pseudo” and “flexa”, referring to the similarity of the new species to Yaginumaella flexa Song and Chai, 1992.

Diagnosis.

The male of this new species can be separated from all known congeneric species in ventral view of palpal organ by: basal portion of embolus touches the margin of genital bulb; distal portion of tibial apophysis covers the posterior margin of cymbium and far away from the margin of genital bulb. The female of this new species can be separated from all known congeneric species by: epigynum about as long as wide; copulatory openings almost parentheses-shaped; hoods locate above the outside area of the copulatory openings.

Description.

Male (Holotype): Total length 5.40. Cephalothorax 2.60 long, 1.90 wide; Abdomen 2.80 long, 1.70 wide. Clypeus 0.15 high. Carapace brown, with black margin, basal area of each eye, anterior and lateral margins of ocular area black; Marginal areas of carapace and thoracic region with one longitudinal yellow brown band. Marginal areas of carapace, anterior margin of ocular area densely covered with white hair, sparsely covered with brown hairs; fovea short, longitudinal and reddish- brown; cervical groove indistinct, radial groove dark brown. Sternum scutiform, covered with short brown hair, dark brown with gray edge. Clypeus dark brown, with long brown setae. Promargin with dense hair. Chelicerae brown to dark brown, with brown hair; 2 promarginal and 1 retromarginal teeth (Figs 18). Labium dark brown, terminal brown, with dark brown hair. Endites base brown, terminal yellow brown, with dense dark brown hair. Legs yellow brown to dark brown; leg I dark brown, I and II spina tion v 2-2-2, I and II spination v 2-2. Measurements of legs: I 4.55 (1.65, 2.20, 1.00, 0.70), II 4.80 (1.60, 1.80, 0.80, 0.60), III 4.90 (1.60, 1.60, 1.00, 0.70), IV 5.40 (1.75, 1.75, 1.20, 0.70). Leg formula: 4321. Abdomen oval, yellow brown, with 6 muscular impressions; lateral areas with two grayish-black longitudinal stripes and scattered black diagonal patches. Posterior area of abdomen with arc-shaped and dentiform dark bands; ventral yellowish-white, with scattered grayish-black patches; median area with one black longitudinal stripe, lateral areas with scattered black diagonal patches. Spinnerets black-brown.

Male palp (Figs 14-15, 16-17): tibia longer than wide in ventral view, with several long prolateral macrosetae in retrolateral view. Genital bulb with membrane structure. Embolus slender and sinuous, nearly as long as genital bulb, originates from the position of 9:00 o’clock, its tip reaches to the position of 14:00 o’clock in ventral view. Bulb squat, median portion widest. Sperm ducts obvious, its diameter about 1/3 width of bulb.

Female: Total length 5.40, Cephalothorax 2.40 long, 1.85 wide. Abdomen 3.00 long, 1.90 wide. Clypeus 0.15 high. Eye sizes and interdistances: AME 0.50, ALE 0.30, PLE 0.25, AER 1.65, PER 1.55, EFL1.00. Measurements of legs: I 4.30 (1.40, 1.70, 0.70, 0.50), II 3.90 (1.30, 1.05, 0.06, 0.50), III 4.80 (1.40, 1.70, 0.90, 0.80), IV 5.20 (1.60, 1.90, 1.00, 0.70). Leg formula: 4312. Other morphological characteristics the same as male, but lightly colored.

Epigyne (Figs 20-21, 22-23) as long as wide, with two distinct anterior hoods. Copulatory openings almost parentheses-shaped, far away from the hoods. Copulatory ducts thick and sinuous. Spermathecae big, squat, close to each other.

Variation.

The male length 4.30-5.40 (n = 2) and the female length 4.80-5.80. (n = 3).

Distribution.

China (Yunnan).