Lathys subhumilis, Zhang, Zhi-Sheng, Hu, Dong-Sheng & Zhang, Yao-Guang, 2012

Zhang, Zhi-Sheng, Hu, Dong-Sheng & Zhang, Yao-Guang, 2012, Notes on the spider genus Lathys Simon, 1884 (Araneae: Dictynidae), with description of four new species from China, Zootaxa 3359, pp. 1-16 : 9-12

Lathys subhumilis sp. nov.

Figs 9A–E , 10A–H , 11A–H , 14

Type material. Holotype: male, China: Chongqing Municipality, Jinyun Mountain, 29°50ʹ30.5ʺN, 106°21ʹ31.1ʺE, Guankou, 28 April 2010, Z.X. Li, K.Y. Xu & L.Y. Wang leg. ( SWUC). Paratypes: 1 male and 3 females, same data as holotype ( SWUC); 4 males and 11 females, Guankou, 5 April 2010, Z.S. Zhang, Z.X. Li, K.Y. Xu & L.Y. Wang leg. ( SWUC); 3 females, Jinyun Mountain, Baizigou, 16–17 April 2010, Z.S. Zhang & Z.X. Li leg. ( SWUC); 1 female, Jinyun Mountain, Jinyun Temple, 26 April 2008, Z.S. Zhang leg. ( SWUC).

Etymology. The specific name refers to its similarity to L. humulis ; adjective.

Diagnosis. The new species is similar to L. humilis and L. nielseni , but distinguished by the long terminal part of conductor, the blunt patellar apophysis; the short, one-loop copulatory ducts and the small spermathecae ( Figs 9A–E , 10F–H , 11G–H ). The new species also differes from L. nielseni by the presence of white spots on the dorsum of opisthosoma.

Discription. Male total length 1.66–1.73. Holotype ( Figs 10A–E ) total length 1.66. Prosoma 0.80 long, 0.66 wide; opisthosoma 0.94 long, 0.74 wide. AME smallest, ALE and PLE largest. Eye sizes and interdistances: AME 0.04, ALE 0.07, PME 0.06, PLE 0.07; AME–AME 0.02, AME–ALE 0.01, PME–PME 0.05, PME–PLE 0.05, ALE–PLE 0.02. MOA 0.16 long, front width 0.09, back width 0.17. Clypeus height 0.07. Both cheliceral margins with 4 teeth. Leg measurements: I 2.29 (0.76, 0.77, 0.49, 0.27); II 1.85 (0.58, 0.62, 0.40, 0.25); III 1.56 (0.49, 0.51, 0.34, 0.22); IV 1.78 (0.55, 0.60, 0.41, 0.22). Leg formula: 1243.

Male palp ( Figs 9A–C , 10F–H ) with a blunt distal patellar apophysis dorsally. Tibia with three apophyses surrounding the terminal part of conductor. Embolus indistinct. The terminal part of conductor with a relatively long and straight end.

Female total length 1.81–2.04. One of the female paratype ( Figs 11A–F ) total length 2.04. Prosoma 0.76 long, 0.61 wide; opisthosoma 1.35 long, 1.06 wide. AME smallest, ALE largest. Eye sizes and interdistances: AME 0.04, ALE 0.07, PME 0.07, PLE 0.07; AME–AME 0.03, AME–ALE 0.01, PME–PME 0.05, PME–PLE 0.04, ALE–PLE 0.01. MOA 0.15 long, front width 0.08, back width 0.17. Clypeus height 0.05. Leg measurements: I 2.06 (0.62, 0.72, 0.44, 0.28); II 1.69 (0.53, 0.56, 0.35, 0.25); III 1.43 (0.45, 0.45, 0.32, 0.21); IV 1.82 (0.58, 0.63, 0.41, 0.20). Leg formula: 1423.

Epigyne ( Figs 9D–E , 11G–H ) with anteriorly located copulatory openings, which anterior and inner margin visible and semicircular. Copulatory ducts relatively short. Spermathecae small, spherical, located on the posterior and lateral side of copulatory ducts, with very wide interdistance.

Distribution. China (Chongqing) ( Fig. 14 ).

Figures

FIGURE 14. Distribution map of four Chinese new Lathys spiders.

FIGURES 9 A – E. Lathys subhumilis sp. nov., holotype male (A – C) and female paratype (D – E). A. Left palp, ventral view; B. Same, lateral view; C. Same, dorsal view; D. Epigyne, ventral view; E. Vulva, dorsal view. Abbreviations: Ca = distal arm of conductor; Cb = base of conductor; Cd = copulatory duct; Co = copulatory opening; Ct = terminal of conductor; Em = embolus; Fd = fertilization duct; Pa = patellar apophysis; Sp = spermatheca; TA = tibial apophyses

FIGURES 10 A – H. Lathys subhumilis sp. nov., holotype male. A. Habitus, dorsal view; B. Same, lateral view; C. Same, ventral view; D. Eyes and chelicerae, frontal view; E. Eyes, dorsal view; F. Left palp, ventral view; G. Same, retrolateral view; H. Same, dorsal view.

FIGURES 11 A – H. Lathys subhumilis sp. nov., female paratype. A. habitus, dorsal view; B. Same, lateral view; C. Same, ventral view; D. Matetarsus, showing the calamistrum; E. Eyes and chelicerae, frontal view; F. Chelicerae, ventral view, showing the teeth; G. Epigyne, ventral view; H. Vulva, dorsal view.