On some Linyphiidae of China, mainly from Taibai Shan, Qinling Mountains, Shaanxi Province (Arachnida: Araneae)
Author
Tanasevitch, Andrei V.
text
Zootaxa
2006
1325
277
311
journal article
10.5281/zenodo.273569
a1367ba3-36b0-4cd4-9ce4-213ef0e4d62f
11755326
273569
Tibioploides stigmosus
(Xia, Zhang, Gao, Fei, Rui &
Kim 2001
)
comb. n.
Figs 84–90
Araeoncus stigmosus
Xia
&
al.
2001: 164 (male only!).
Material
:
1 ♂
, 2 Ψ (
SMF
),
China
, Quinghai Prov., Bei Shan National Park,
120 km
NE Xining,
2300–2700 m
,
23.V.–8.VI.1996
, leg. J. Martens.
Taxonomic remarks
. This species was described from Gansu Province,
China
as
Araeoncus stigmosus
from both sexes (
Xia
et. al
. 2001
). According to the published figures, the female of this species belongs to the genus
Dicymbium
Menge 1868
, not
Tibioploides
Eskov & Marusik 1991
, and is probably referred to
D
.
sinofacetum
sp. n.
FIGURES 84–90.
Tibioploides stigmosus
(Xia, Zhang, Gao, Fei, Rui & Kim 2001)
comb. n.
84 right palp (retrolateral view), 85 palpal tibia (dorsal view), 86 tip of median membrane and embolus (lateral view), 87 median membrane and embolic division (ventral view), 88–90 epigyne (88, 89 ventral view, 90 dorsal view). Abbreviations: E embolus, MM median membrane.
Tibioploides stigmosus
, together with the Japanese
T
.
monticola
Saito & Ono 2001
and
T
.
eskovianus
Saito & Ono 2001
, comprise a homogeneous speciesgroup which is characterised by the very long and wellsclerotised median membrane conducting the long and slender embolus over all its extent. The epigynes of these species are similar but differ in shape of the dorsal plate.
Short description
. Male. Total length––2.60. Carapace 1.40 long, 1.00 wide, brownish red. Chelicerae 0.50 long. Legs pale yellowish red. Leg I, 3.41 long (1.00+0.30+0.85+0.73+0.53), IV––3.39 long (1.00+0.28+0.88+0.73+0.50). Chaetotaxy 2.2.2.1. Mt I–III each with a trichobothrium. TmI––0.29. Palp (
Figs 84–87
): Paracymbium massive, anchorshaped. Embolus long and slender, median membrane wellsclerotised, conducting the embolus all along its extent. Tip of embolus may be curved as in
Fig. 86
. Opisthosoma 1.33 long, 1.00 wide, grey.
Female. Total length––2.55. Carapace 1.20 long, 0.90 wide. Chelicerae 0.55 long. Leg I, 3.11 long (0.90+0.33+0.75+0.68+0.45), IV––3.18 long (0.95+0.30+0.80+0.68+0.45). TmI––0.33. Opisthosoma 1.45 long, 1.10 wide. Epigyne as in
Figs 88–90
: relatively large, dark; dorsal plate small, distal edge thickened and slightly incurved. Body and leg colouration, chaetotaxy as in male.
This is the first description of the female sex.