Notes on the spider genus Lathys Simon, 1884 (Araneae: Dictynidae), with description of four new species from China
Author
Zhang, Zhi-Sheng
Author
Hu, Dong-Sheng
Author
Zhang, Yao-Guang
text
Zootaxa
2012
3359
1
16
journal article
10.5281/zenodo.281616
6abc8cb2-b45b-4190-b963-7dc74544ed3a
1175-5326
281616
Lathys spiralis
sp. nov.
Figs 4A–B
,
5 A–H
,
14
Type
material.
Holotype
:
Female,
China
, Shaanxi
Province, Zhouzhi County, Houzhenzi Town, under stone or leaf litter, 33°50'50ʺ N, 107°50'0ʺ E,
1 May 2010
, Z.X. Li, K.Y. Xu & L.Y. Wang leg. (
SWUC
).
Paratypes
:
2 females
, same data as
holotype
(
SWUC
);
1 female
,
Chongqing
Municipality, Jinyun Mountain, 29°50ʹ30.5ʺN, 106°21ʹ31.1ʺE, Guankou, under stone or leaf litter,
5 April 2010
, Z.S. Zhang, Z.X. Li, K.Y. Xu & L.Y. Wang leg. (
SWUC
);
7 females
, Jinyun Mountain, Baizigou,
17 April 2010
, Z.X. Li leg. (
SWUC
);
1 female
, Baizigou,
24 April 2010
, Z.X. Li, K.Y. Xu & L.Y. Wang leg. (
SWUC
);
2 females
, Baizigou,
16 April 2008
, Z.S. Zhang leg. (
SWUC
).
Etymology.
The specific name is derived from the Latin word ‘
spiralis
’, meaning ‘spiraled’ and refers to the spiraled copulatory ducts of the epigyne; adjective.
Diagnosis.
Female of the new species is similar to those of
L. humilis-
group species,
L. humilis
,
L. nielseni
,
L. bin
(
Marusik & Logunov, 1991: 92, figs 3.7–9
) and
L. subhumilis
sp. nov.
(
Figs 9D–E
,
11G–H
), but can be distinguished from the others by the visible and long inner margins of copulatory openings, the relatively long and looped copulatory ducts and the big spermathecae (
Figs 4A–B
,
5G–H
).
FIGURES 4A–B.
Lathys spiralis
sp. nov.
,
holotype female. A. Epigyne, ventral view; E. Vulva, dorsal view. Abbreviations: Cd = copulatory duct; Co = copulatory opening; FD = fertilization duct; Sp = spermatheca.
FIGURES 5A–H.
Lathys spiralis
sp. nov.
,
holotype female. A. Habitus, dorsal view; B. Same, lateral view; C. Same, ventral view; D. Eyes and chelicerae, frontal view; E. Chelicera, ventral view, showing the teeth; F. Matetarsus, showing the calamistrum; G. Epigyne, ventral view; H. Vulva, dorsal view.
Description.
Female total length 1.58–2.29.
Holotype
(
Figs 5A–E
) total length 2.01. Prosoma 0.93 long, 0.75 wide; opisthosoma 1.30 long, 0.99 wide. AME smallest, ALE largest. Eye sizes and interdistances: AME 0.02, ALE 0.08, PME 0.07, PLE 0.08; AME–AME 0.04, AME–ALE 0.03, PME–PME 0.07, PME–PLE 0.07, ALE–PLE 0.03. MOA 0.17 long, front width 0.09, back width 0.17. Clypeus height 0.04. Chelicerae with 4 promarginal and 5 retromarginal teeth. Calamistrum of metatarsus IV relatively short. Leg measurements: I 2.62 (0.78, 0.93, 0.55, 0.36); II 2.12 (0.65, 0.71, 0.44, 0.32); III 1.83 (0.58, 0.58, 0.40, 0.27); IV 2.37 (0.75, 0.79, 0.53, 0.30). Leg formula: 1423.
Epigyne (
Figs 4A–B
,
5G–H
). Inner margins of copulatory openings visible. Copulatory ducts spiraled around the copulatory openings and spermathecae, forming two loops. Spermathecae ball-like, relatively big, with slightly wider distance than their diameter.
Male unknown.
Distribution.
China
(Shaanxi and Chongqing) (
Fig. 14
).