Alopecosa disca Tang, Yin & Yang, 1997
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publication ID |
https://dx.doi.org/10.3897/zookeys.945.52287 |
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publication LSID |
lsid:zoobank.org:pub:2CDE5115-76CB-4C2A-A05E-FACFE64C38F4 |
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persistent identifier |
https://treatment.plazi.org/id/0D1636B7-6B99-5904-A14B-2684276A5ADB |
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treatment provided by |
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scientific name |
Alopecosa disca Tang, Yin & Yang, 1997 |
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Alopecosa disca Tang, Yin & Yang, 1997 Figures 1 View Figure 1 , 2 View Figure 2 , 10 View Figure 10
Alopecosa disca Tang, Yin & Yang in Yin et al. 1997: 64, fig. 27a-d (♀); Song et al. 1999: 317, fig. 187E (♀, republication of the original figures).
Type.
Holotype ♀ (HNU, Lyco- Alop -0004-001): China, Gansu Province, Lanzhou City, Yuzhong County, Temple Majiamiao, 13.VII.1981, leg. Yingqiu Tang. Temple Majiamiao: 35°51'N, 104°7.12'E (information supplied by present authors).
Diagnosis.
Epigyne of this species is similar to that of A. chagyabensis Hu & Li, 1987, a species known from Xizang Autonomous Region of China. Both species are lacking anterior hood, have base of septum width much longer than septal stem length, both have distinct copulatory opening, but can be separated by septum width/length ratio 2.5 in A. disca and 1.8 in A. chagyabensis . Two species well differ by the shape of the endogyne (compare Fig. 1F-I View Figure 1 and fig. 64-2 in Hu 2001).
Description.
Body (Fig. 1A View Figure 1 ) length 16.0, carapace 7.9 long, 5.0 wide, abdomen 8.8 long, 5.8 wide (data from original description by Yin et al. 1997: 64). Carapace dark reddish brown. Cervical and radial grooves distinct, darker than body color. Fovea linear, short, but a little thick. Head region wide, with anterior margin almost 4/5 width of thorax region. Anterior eye row straight, almost as wide as median one, posterior row widest. Eye sizes and inter-distances (Fig. 1A, B View Figure 1 ): AME 0.30, ALE 0.27, PME 0.49, PLE 0.47; AME-AME 0.19, AME-ALE 0.2, PME-PME 0.49, PME-PLE 0.67. Clypeus height 0.23. Chelicerae black-brown, with three promarginal and two retromarginal teeth (Fig. 1C View Figure 1 ). Both labium and endites black brown, with reddish brown distal parts. Sternum (Fig. 1D View Figure 1 ) brown, with metallic luster. STL 3.52, STW 2.82 (Fig. 1D View Figure 1 ). Palp and legs reddish brown, robust, without any distinct annuli. Leg measurements: I 18.30 (5.00, 6.60, 3.80, 2.90); II 16.70 (4.80, 5.80, 3.60, 2.50); III 15.00 (4.50, 5.00, 3.60, 1.90); IV 20.40 (6.10, 7.00, 5.00, 2.30) (data from original description by Yin et al. 1997: 64), leg formula 4123. Dorsum of abdomen (Fig. 1A View Figure 1 ) dark brown mixed yellowish brown. Cardiac mark distinct, dark brown and large. Posterior half of abdomen with 4 or 5 chevrons (because the type specimen has been wrinkled, chevron patterns showed in color photos of the present paper are not clearer than those showed in line drawings of the original paper). Venter of abdomen grey yellowish in the middle and dark grey laterally.
Epigyne (Figs 1E-I View Figure 1 , 2 View Figure 2 ) wider than long. Atrium and anterior hood absent. Septum weakly sclerotized, with short stem (Ss) and broad base (Sb); stem shorter than base height. Spermathecae with clavate head, slender and curved stalk, and accessorial gland (Ag) situated at the place near copulatory duct. Copulatory ducts short, slightly twisted.
Male. Unknown.
Distribution.
Only known from the type locality, Gansu, China (Fig. 10 View Figure 10 ).
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.
