Lathys subalberta, 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 : 7-9

publication ID	https://doi.org/ 10.5281/zenodo.281616
DOI	https://doi.org/10.5281/zenodo.6167584
persistent identifier	https://treatment.plazi.org/id/03CE0E1C-6308-6A04-E299-2E84629ADE9B
treatment provided by	Plazi
scientific name	Lathys subalberta
status	sp. nov.

Treatment

Lathys subalberta View in CoL sp. nov.

Figs 6A–F View FIGURES 6 A – H , 7A View FIGURES 7 A – H –I, 8A–G, 14

Type material. Holotype: Male, China, Shaanxi Province: Zhouzhi County, Houzhenzi Town, 33°50'50ʺ N, 107°50'0ʺ E, 23 May 2009, Z.S. Zhang, R.Y. Zhuo, Y.F. Zhang & G. Wei leg. ( SWUC); Paratypes: 1 female, same data as holotype ( SWUC); 1 female, Houzhenzi, 3 July 1997, J. Martens & P. Jäger leg. ( SMF).

Etymology. The specific name refers to its similarity to L. alberta (Gerstch, 1946) ; adjective.

Diagnosis. The new species is quite similar to L. stigmatisata -group species, such as L. stigmatisata from Europe ( Marusik et al. 2009b: 22, figs 4, 29–32, 44, 51–53), L. alberta from North America ( Figs 12A–G View FIGURES 12 A – H , 13A–G View FIGURES 13 A – H ; 1 male and 4 females from Colorado, loaned from AMNH, examined) and L. maculosa (Karsch, 1879) from Japan ( Ono & Ogata 2009: 134, figs 1–7). Epigynes of these species can not be easily distinguished from one another. But male palp of the new species can be distinguished by a relatively low cymbium and the different origin of embolus ( Figs 6B–C View FIGURES 6 A – H , 7G–H View FIGURES 7 A – H ). Additionally, bodies of the new species are relatively larger than the others, opisthosomas have white scale-like markings dorsally (absent in the others)( Figs 7A View FIGURES 7 A – H , 8A View FIGURES 8 A – H ).

Discription. Male Holotype ( Figs 7A–E View FIGURES 7 A – H ) total length 2.80. Prosoma 1.29 long, 1.08 wide; opisthosoma 1.63 long, 1.21 wide. AME smallest and ALE largest. Eye sizes and interdistances: AME 0.07, ALE 0.11, PME 0.09, PLE 0.11; AME–AME 0.05, AME–ALE 0.04, PME–PME 0.09, PME–PLE 0.09, ALE–PLE 0.02. MOA 0.26 long, front width 0.18, back width 0.26. Clypeus height (0.08) wider than the diameter of AME. Chelicerae with 4 promarginal and 4 or 5 retromarginal teeth. Leg measurements: I 4.85 (1.39, 1.82, 1.10, 0.54); II 3.84 (1.17, 1.33, 0.87, 0.47); III 3.19 (0.98, 1.01, 0.76, 0.44); IV 3.87 (1.17, 1.35, 0.93, 0.42). Leg formula: 1423. Opisthosoma with four indistinct black chevron-like markings, some white spots dorsally and a narrow cribellum ventrally.

Male palp ( Figs 6A–D View FIGURES 6 A – H , 7F View FIGURES 7 A – H –I) without patellar apophysis. Tibia with three apophyses, surrounding the terminal part of conductor. Embolus originating retrolatero-distally and coiled along the margin of tegulum, mostly holded by the reversed coiled distal arm of conductor. Conductor with a greatly long distal arm and a screw-like terminal part extending to the dorsal tibia.

One of the female paratypes ( Figs 8A–E View FIGURES 8 A – H ) total length 2.26. Prosoma 0.86 long, 0.69 wide; opisthosoma 1.49 long, 1.19 wide. Eye sizes and interdistances: AME 0.05, ALE 0.08, PME 0.05, PLE 0.07; AME–AME 0.03, AME–ALE 0.02, PME–PME 0.06, PME–PLE 0.06, ALE–PLE 0.02. MOA 0.17 long, front width 0.12, back width 0.18. Clypeus height 0.04. Calamistrum distinct. Leg measurements: I 2.31 (0.67, 0.84, 0.49, 0.31); II 1.98 (0.60, 0.69, 0.41, 0.28); III 1.76 (0.56, 0.57, 0.38, 0.25); IV 2.21 (0.67, 0.77, 0.51, 0.26). Leg formula: 1423. Chelicerae relatively short. Cribellum distinct, uniform. The other characters similar to these of male.

Epigyne ( Figs 6E–F View FIGURES 6 A – H , 8F–G View FIGURES 8 A – H ) with a couple of rounded copulatory openings. Copulatory ducts long and looped. Spermathecae spherical, with wide interdistance and located laterally of copulatory openings. Fertilization ducts posteriorly originating from the inner side of spermathecae.

Distribution. China (Shaanxi)( Fig. 14 View FIGURE 14 ).