Hahnia saccata, Zhang, Zhi-Sheng, Li, Shuqiang & Zheng, Guo, 2011

Zhang, Zhi-Sheng, Li, Shuqiang & Zheng, Guo, 2011, Comb-tailed spiders from Xishuangbanna, Yunnan Province, China (Araneae, Hahniidae), Zootaxa 2912, pp. 1-27 : 16-19

Hahnia saccata sp. nov.

Figs 14–16

Type material. Holotype: Male, China, Yunnan Province, Xishuangbanna Dai Autonomous Prefecture, Mengla County, Menglun Nature Reserve, ground of secondary tropical montane evergreen forest (active searching), 5 – 12 September 2006, G. Zheng leg. Paratypes: 16 males, same locality as for holotype (active searching and pitfall traps), from July to September 2006, G. Zheng leg.; 66 females, same locality as for holotype (active searching and pitfall traps), September 2006 – May 2007, G. Zheng leg.

Etymology. The specific name is taken from the Latin adjective ‘ saccatus ’, meaning saccate, shaped like a pouch or sac and referring its saccate sub-spermathecae; adjective.

Diagnosis. The new species is similar to H. himalayaensis Hu & Zhang, 1990 ( Figs 10–13 ), H. cinerea Emerton, 1890 and H. arizonica Chamberlin & Ivie, 1942 in having tegular setea on male palp and two relative small copulatory openings of epigyne, but can be distinguished from these species by the stout RTA ( Figs 14 B–C, 15G–H), the fewer tegular setae ( Figs 14 A, 15F) of male palp and the posteriorly located copulatory openings ( Figs 14 D, 16E–F), the very short copulatory ducts between openings and bifurcation points and the spherical subspermathecae with relatively wide distance from each other ( Figs 14 E, 16G).

Description. Male. Total length 2.30 – 2.60. Holotype ( Figs 15 A–E): Total length 2.46. Prosoma 1.32 long, 1.02 wide; opisthosoma 1.20 long, 0.84 wide. Eye sizes and interdistances: AME 0.07, ALE 0.10, PME 0.09, PLE 0.11; AME–AME 0.03, AME–ALE 0.02, PME–PME 0.06, PME–PLE 0.04, ALE–PLE 0.02. MOA 0.22 long, front width 0.16, back width 0.24. Clypeus height 0.13. Chelicerae with distinct lateral condyle, stridulatory files laterally and 3 promarginal, 5 – 6 retromarginal teeth. Leg measurements: I 4.45 (1.27, 1.47, 1.01, 0.70); II 4.06 (1.19, 1.32, 0.91, 0.64); III 3.58 (1.02, 1.10, 0.87, 0.59); IV 4.46 (1.24, 1.40, 1.10, 0.72). Leg formula: 4123. Opisthosoma with 4 chevron-like markings dorsally. Spiracle located centrally.

Male palpal patellar apophysis hooked, originating retro-basally. RTA sharply curved backward, tip pointed. Embolus originating retro-basally, curved clockwise around the tegulum (left palp) and ending near the membranous median apophysis. Set of setae located on tegulum prolaterally. Cymbial furrow deep, its length slightly shorter than half of cymbial length ( Figs 14 A–C, 15 F–H).

Female. Total length 2.40 – 3.00. One female paratype ( Figs 16 A–D): Total length 2.55. Prosoma 1.35 long, 0.95 wide; opisthosoma 1.40 long, 1.15 wide. Eye sizes and interdistances: AME 0.05, ALE 0.10, PME 0.08, PLE 0.10; AME–AME 0.05, ALE–ALE 0.03, PME–PME 0.08, PME–PLE 0.05, ALE–PLE 0.02. Clypeus height 0.13. Chelicerae with 6 retromarginal teeth (7 or 8 teeh rarely found). Leg measurements: I 3.75 (1.10, 1.30, 0.80, 0.55); II 3.40 (1.00, 1.15, 0.75, 0.50); III 3.15 (0.90, 1.05, 0.75, 0.45); IV 4.20 (1.25, 1.35, 1.00, 0.60). Leg formula: 4123. Other characters as in male.

Epigyne with two small copulatory openings, located in shallow, small atrium and close to epigastric furrow. Copulatory ducts bifurcate near the openings. One branch connecting with sub-spermathecae relatively thick and the other slender. Sub-spermathecae located anteriorly. Spermathecae elliptic, near the posterior margin of epigyne. Fertilization ducts originating from the spermathecae posteriorly and pointing laterally ( Figs 14 D–E, 16E–G).

Distribution. Known only from Xishuangbanna rainforest, Yunnan Province, China.

Figures

FIGURE 10. Hahnia himalayaensis Hu & Zhang, 1990, male. A. Left palp, ventral view; B. Same, retrolateral view; C. Same, dorsal view. CF = cymbial furrow; Em = embolus; MA = median apophysis; PA = patellar apophysis; RTA = retrolateral tibial apophysis; TS = tegular setae.

FIGURE 11. Hahnia himalayaensis Hu & Zhang, 1990, females (A and B from the same specimen, C and D from another one). A, C. Epigyne, ventral view; B, D. Vulva, dorsal view. CD = copulatory duct; CO = copulatory opening; EH = epigynal hood; FD = fertilization duct; S = spermatheca; SS = subspermatheca.

FIGURE 12. Hahnia himalayaensis Hu & Zhang, 1990, male. A. Male habitus, dorsal view; B. Same, lateral view; C. Same, ventral view; D. Eyes and chelicerae, frontal view; E. Stridulatory files on the lateral chelicerae; F. Chelicerae, ventral view; G. Left palp, ventral view; H. Same, retrolateral view; I. Same, dorsal view.

FIGURE 13. Hahnia himalayaensis Hu & Zhang, 1990, females (D and F from the same specimen, E and G from another one). A. Female habitus, dorsal view; B. Same, lateral view; C. Same, ventral view; D, E. Epigyne, ventral view; F, G. Vulva, dorsal view.

FIGURE 14. Hahnia saccata sp. nov., holotype male (A – C) and female paratype (D – E). A. Left palp, ventral view; B. Same, retrolateral view; C. Same, dorsal view; D. Epigyne, ventral view; E. Vulva, dorsal view. At = atrium; CD = copulatory duct; CF = cymbial furrow; CO = copulatory opening; Em = embolus; EH = epigynal hood; FD = fertilization duct; MA = madian apophysis; PA = patellar apophysis; RTA = retrolateral tibial apophysis; S = spermatheca; SS = subspermatheca; TS = tegular setea.

FIGURE 15. Hahnia saccata sp. nov., holotype male. A. Male habitus, dorsal view; B. Same, lateral view; C. Same, ventral view; D. Eyes and chelicerae, frontal view; E. Stridulatory files on lateral chelicerae (Arrow indicating); F. Left palp, ventral view; G. Same, retrolateral view; H. Same, dorsal view.

FIGURE 16. Hahnia saccata sp. nov., paratype female. A. Female habitus, dorsal view; B. Same, lateral view; C. Same, ventral view; D. Chelicerae, ventral view; E. Epigyne, ventral view (not dissected); F. Vulva, ventral view; G. Vulva, dorsal view.