Euophrys atrata Song & Chai, 1992

Zha, Shanjie, Jin, Chi & Zhang, Feng, 2014, The first description of the male Euophrys atrata and E. bulbus from southern China (Araneae: Salticidae), Zootaxa 3779 (3), pp. 368-374 : 369-371

Euophrys atrata Song & Chai, 1992

( Figs. 1–11 )

Euophrys atrata Song & Chai, 1992: 77 , f. 2A–C; Song & Li, 1997: 431, f. 39A–C; Song, Zhu & Chen, 1999: 509, f. 293A, 325F.

Diagnosis. Among the congeners, the female of the species closely resembles Euophrys frontalis (Walckenaer, 1802) ( Zhu & Zhang, 2011, fig: 345) in having large spermathecae, but differs by the shapes of the epigynal window and copulatory ducts which are short (while longer and coiled with more than two loops in the latter). The male is similar to Euophrys albopalpalis Bao & Peng, 2002 in having the long embolus which spirales on top of bulb and the distinctly sinuous sperm duct, but can be distinguished by the bifurcated embolar tip and the wider sperm ducts.

Description. Male (from Jiulong Mountains). Total body length 3.56–4.02; one specimen measured, body length 4.02: cephalothorax length 2.25, width 1.60; abdomen length 1.71, width 1.03. Carapace ( Fig. 2 ) dark brown. Eye sizes and interdistances: AME 0.48, ALE 0.30, PME 0.06, PLE 0.23; AERW 1.16, PERW 1.10, EL 0.75. Clypeus height 0.18, dark brown with sparse brown hairs. Chelicerae dark red brown, with 2 promarginal teeth and 1 retromarginal fissidentati with 5 denticles. Labium length 0.24, width 0.28. Sternum length 0.78, width 0.66. Legs brown except metatarsus light yellow; leg measurements: leg I 3.93 (1.12, 0.69, 0.88, 0.74, 0.50); II 3.32 (1.04, 0.61, 0.66, 0.61, 0.40); III 3.94 (1.29, 0.64, 0.78, 0.77, 0.46); IV 4.04 (1.21, 0.57, 0.82, 0.99, 0.45). Leg formula: 4312. Abdomen somewhat oval, slightly wider anteriorly; dark brown dorsally, with 3–5 middle yellow herringbone markings. Tibia distally and cymbium basally with dense long white hairs; palp dark yellow; RTA short and finger-like, tip with a notch from prolateral view; embolus slender, curved for half a circle, tip biforked; sperm ducts distinctly sinuous, occupying about three quarters of the bulb width. ( Figs. 5–7 , 8–9 ).

Female. Total length 4.00–4.60; one specimen measured (from Wuyi Mountains), body length 4.60: cephalothorax length 1.94, width 1.39; abdomen length 2.56, width 1.80. Carapace ( Fig. 1 ) dark brown. Eye sizes and interdistances: AME 0.42, ALE 0.25, PME 0.06, PLE 0.17; AERW 0.93, PERW 0.97, EL 1.10. Clypeal height 0.07. Labium length 0.25, width 0.26. Sternum length 0.75, width 0.60. Leg measurements: leg I 3.22 (0.99, 0.60, 0.71, 0.57, 0.35); II 2.80 (0.85, 0.57, 0.54, 0.44, 0.40); III 3.34 (1.13, 0.57, 0.64, 0.65, 0.35); IV 3.89 (1.20, 0.48, 0.82, 0.92, 0.47). Leg formula: 4312. Other characters as in male. Epigyne ( Figs. 3 , 10 ): epigynal window large with conspicuous hollow; median septum relatively narrow; copulatory openings located at each side of median septum anteriorly. Vulva ( Figs. 4 , 11 ): copulatory duct short, without coils; spermathecae oval and apart from each other.

Type material. Holotype female, paratype 1 female (collected from Dongba County, Hubei Province, 21 may 1989), deposited in the Institute of Zoology, Chinese Academy of Sciences; not examined.

Materials examined. 3 males, 1 female, China, Zhejiang Province, Jiulong Mountains (N 28º21', E 118º52'), Yangmaoyuan, 4 June 2013, Shanjie Zha leg.; 4 males, 3 females, China, Fujian Province, Wuyi Mountains, Moshikeng (N 27º59', E 118º13'), 4 June 2013, Chi Jin leg.

Distribution. Hubei, Zhejiang, Fujian.

Figures

FIGURES 1 – 7. Euophrys atrata Song & Chai, 1992. 1. female habitus, dorsal view; 2. male habitus, dorsal view; 3. epigyne, ventral view, 4. vulva; 5. male left palp, ventral view, 6. same, retrolateral view, 7. same, dorsal view. Scale bars: 1 mm (1 – 2); 0.2 mm (3 – 7).

FIGURES 8 – 11. Euophrys atrata Song & Chai, 1992. 8. male left palp, prolateral view, 9. same, retrolateral view; 10. epigyne, ventral view, 11. vulva. Scale bars: 0.2 mm.