Otacilia longituba, Wang, Lu-Yu, Zhang, Feng & Zhang, Zhi-Sheng, 2012

Wang, Lu-Yu, Zhang, Feng & Zhang, Zhi-Sheng, 2012, Ant-like sac spiders from Jinyun Mountain Natural Reserve of Chongqing, China (Araneae: Corinnidae), Zootaxa 3431, pp. 37-53 : 41-43

Otacilia longituba sp. nov.

Figures 1 C–D, 4–5

Type material. Holotype male, China, Chongqing, Jinyun Mountain Natural Reserve: Guankou Administrative Station, 29°42.159ʹ N, 106°17.427ʹ E, Alt. 517m, 24 October 2011, Z. Li leg. Paratypes: 1 male and 3 females, with same data as holotype; 1 female, Guankou, 28 March 2010, Z.X. Li and L.Y. Wang leg.; 5 females, Guankou, 5 April 2010, Z.S. Zhang leg.; 6 females, Guankou, 28 April 2010, Z.X. Li, L.Y. Wang and K.Y. Xu leg.; 1 female, Guankou, 12 January 2011, Z.X. Li and L.Y. Wang leg.; 5 females, Guankou, 30 March 2011, Z. Li and L.Y. Wang leg.

Etymology. The specific name is a combination of ‘ long ’ and ‘ tubus ’, referring to the long copulatory ducts; adjective.

Diagnosis. The new species is similar to O. komurai ( Figs 1 B, 3A–I), but differs from the latter by the wide and strong RTA, the thin embolus, the uninflated posterior part of the male palpal tegulum ( Figs 4 B–C, 5F–G), the absence of a median plate, the centrally located copulatory openings separated by a short distance and the thin copulatory ducts of the female epigyne ( Figs 4 D–E, 5H–I).

Description. Male ( Figs 1 C, 5A, 5C–D). Total length 2.62–2.74. Holotype total length 2.63. Prosoma 1.27 long, 1.08 wide; opisthosoma 1.29 long, 0.77 wide. Dorsum of prosoma black brown. Fovea longitudinal. Cervical groove and radial furrows both indistinct. Eight eyes in two rows. Both eye rows recurved in dorsal view. Eye sizes and interdistances: AME 0.08, ALE 0.08, PME 0.07, PLE 0.07; AME–AME 0.04, AME–ALE 0.01, PME–PME 0.10, PME–PLE 0.05, ALE–PLE 0.09. MOA 0.20 long, front width 0.17, back width 0.22. Clypeus height 0.16. Chelicerae stout, black brown, with 2 promarginal and 5 retromarginal teeth. Gnathocoxae black brown, longer than wide. Labium black brown, as long as wide. Sternum black brown, heart-shaped, with sparse brown hairs. Legs yellow brown, femur with one dorsal spine. Femur I with 4 ventral spines; tibia I with 8 pairs of ventral spines; metatarsus I with 4 pairs of ventral spines. Femur II with 3 ventral spines; tibia II with 8 pairs of ventral spines; metatarsus II with 4 pairs of ventral spines. Leg measurements: I 5.32 (1.38, 2.00, 1.24, 0.70); II 4.25 (1.09, 1.54, 0.96, 0.66); III 3.69 (1.00, 1.09, 0.96, 0.63); IV 5.82 (1.62, 1.79, 1.55, 0.86). Leg formula: 4123. Opisthosoma oval. Dorsum black brown, with yellow brown markings and six bright chevron-like markings. Venter yellowish brown.

Male palp ( Figs 4 A–C, 5E–G). Femur relatively long, with an apophysis ventrally and the length of patella equal to that of tibia. RTA broad, with relatively narrow base and blunt apex extending ventrally. Embolus thin, needle-like. Tegulum widest in the middle part and extending backward, exceeding the border of cymbium.

Female (one of paratypes, Figs 1 D, 5B) total length: 3.79. Prosoma 1.48 long, 1.35 wide; opisthosoma 2.24 long, 1.58 wide. Eye sizes and interdistances: AME 0.09, ALE 0.08, PME 0.07, PLE 0.07; AME–AME 0.05, AME–ALE 0.03, PME–PME 0.13, PME–PLE 0.08, ALE–PLE 0.12. MOA 0.24 long, front width 0.21, back width 0.22. Clypeus height 0.11. Leg measurements: I 6.40 (1.65, 2.43, 1.51, 0.81); II 4.91 (1.26, 1.77, 1.14, 0.74); III 4.37 (1.08, 1.42, 1.15, 0.72); IV 6.77 (1.81, 2.14, 1.87, 0.95). Leg formula: 4123.

Epigyne ( Figs 4 D–E, 5H–I). Copulatory openings centrally located, with a little longer distance from each other than its diameter. Copulatory ducts with a pair of large, transparent bursae. Spermathecae somewhat ball-like, connecting with fertilization ducts anteriorly.

Distribution. Known only from the type locality, Chongqing, China ( Fig. 14 ).

Figures

FIGURE 1. Photos of living specimens of Corinnidae from Jinyun Mt. (I). A. Corinnomma severum (Thorell, 1877), male; B. Otacilia komurai (Yaginuma, 1952), male; C. Otacilia longituba sp. nov., male; D. Otacilia longituba sp. nov., female.

FIGURE 4. Otacilia longituba sp. nov., holotype male (A – C) and paratype female (D – E). A. Left male palp, prolateral view; B. Same, ventral view; C. Same, retrolateral view; D. Epigyne, ventral view; E. Vulva, dorsal view.

FIGURE 14. The location of Jinyun Mountain Natural Reserve in China.