Gamasomorpha virgulata, Tong, Yanfeng & Li, Shuqiang, 2009

Tong, Yanfeng & Li, Shuqiang, 2009, Three new species and one newly recorded species of oonopid spiders (Araneae: Oonopidae) from Hainan, China, Zootaxa 2060, pp. 22-32 : 24-26

Gamasomorpha virgulata sp. nov.

Figs 1D–F , 2D–F , 4A–D .

Type material: Holotype male, 1 male and 7 females paratypes, CHINA: Hainan Province, Bawangling National Natural Reserve (alt. 825 m, 19°05.753´N, 109°10.557´E), 24 July 2007, SQ Li & CX Wang leg.; 1 male paratype, CHINA: Hainan Province, Diaoluoshan National Natural Reserve (alt. 653 m, 18°43.766´N, 109°51.815´E), 15 August 2007, SQ Li & CX Wang leg.; 3 females paratypes, CHINA: Hainan Province, Jianfengling National Natural Reserve (alt. 888 m, 18°44.383´N, 108°51.062´E), 19 July 2007, SQ Li & CX Wang leg.; 2 males paratypes, CHINA: Hainan Province, Limushan National Natural Reserve (alt. 811 m, 19°10.686´N, 109°44.490´E), 12 August 2007, SQ Li & CX Wang leg.; 1 male paratype, CHINA: Hainan Province, Tongling National Natural Reserve, 17 August 2007, SQ Li & CX Wang leg.; 1 male paratype, CHINA: Hainan Province, Wuzhishan National Natural Reserve, 9 August 2007, SQ Li & CX Wang leg. All type materials are deposited in IZCAS.

Etymology: The specific name comes from a Latin word, virgulatus, meaning “with stripes”, referring to the distinctively striated carapace.

Diagnosis: The new species can be distinguished from all the other congeners by the distinctively striated carapace, the rows of small pits on well developed radial furrows in sternum ( Fig. 1F ), the smaller eyes size and the knob-like elevation on proximo-ventral surface of male palpal bulb ( Fig. 4B ).

Description: Male. Body reddish brown, chelicerae and sternum lighter, legs yellow. Body length 2.77–2.97; carapace 1.20–1.26 length, 0.83–0.88 width; abdomen 1.37–1.57 length, 0.91–1.03 width. Clypeus with a row of hairs at anterior margin; clypeus height about 1 time the diameter of anterior eyes. Pars cephalica slightly elevated in profile ( Fig. 1E ). Carapace smooth on the top and distinctively striated at sides ( Fig. 1D ), with a row of finely hairs along margin, its dorsal surface with a row of short, finely hairs laterally and several directed hairs medially. Eyes six, nearly equal sized, distinctively smaller than those of the congeners (compare Figs 1 D and 1A, G, J ); ALE separated by about its diameter; posterior eye row slightly recurved in dorsal view. Labium with 2 setae at anterior margin. Sternum with narrow, transverse palpal groove, covered with thin hairs standing in medium-sized, round pits; radial furrows well developed, composing of rows of small pits ( Fig. 1F ). Measurements of legs: I 2.96 (0.91, 0.51, 0.63, 0.57, 0.34); II 2.82 (0.86, 0.48, 0.57, 0.57, 0.34); III 2.40 (0.80, 0.37, 0.43, 0.46, 0.34); IV 3.26 (1.00, 0.49, 0.71, 0.69, 0.37). Leg formula: IV–I–II–III. Dorsal scutum ovoid, smooth, densely covered with short hairs. Booklung covers oval, large. Pedicel tube short, with dorsolateral extension, scuto-pedicel region with paired curved scutal ridges ( Fig. 2E, F ). Sperm pore narrow, slit-like. Colulus small, bearing two setae. Cymbium and bulbus of palp yellow. Bulbus longer than cymbium, bulged proximo-ventrally, apex conical, acute tipped. Embolusconductor complex, mesially bent in dorsal view ( Figs 4A, B ).

Female. Similar to male in coloration and general features, but body size larger, sternum without palpal groove. Body length 3.03–3.41; carapace 1.31–1.38 length, 0.96–1.01 width; abdomen 1.48–1.76 length, 1.21–1.31 width. Measurements of legs: I 3.48 (1.08, 0.66, 0.74, 0.66, 0.34); II 3.23 (1.03, 0.57, 0.63, 0.66, 0.34); III 2.76 (0.86, 0.48, 0.51, 0.57, 0.34); IV 3.93 (1.14, 0.66, 0.85, 0.83, 0.45). Epigastric area without any external specialities ( Figs 2D , 4C ). Vulva with a large receptaculum and complicated sclerites ( Fig. 4D ).

Figures

FIGURES 1 A – L. A – C. Gamasomorpha comosa sp. nov., male holotype; D – F. Gamasomorpha virgulata sp. nov., male holotype; G – I. Xestaspis loricata (L. Koch, 1873), male; J – L. Xestaspis rostrata sp. nov., male holotype. A, D, G, J. Habitus, dorsal view; B, E, H, K. Habitus, lateral view; C, F, I, L. Sternum, ventral view.

FIGURES 2 A – L. A – C. Gamasomorpha comosa sp. nov., female paratype; D – F. Gamasomorpha virgulata sp. nov., female paratype; G – I. Xestaspis loricata (L. Koch, 1873), female; J – L. Xestaspis rostrata sp. nov., female paratype. A, D, G, J. Abdomen, ventral view; B, E, H, K. Abdomen, lateral view; C, F, I, L. Abdomen, anteroventral view.

FIGURES 4 A – D. Gamasomorpha virgulata sp. nov. A – B. Left male palp, dorsal (A) and prolateral (B) views; C. Female genital area, ventral view; D. Vulva, dorsal view. Scale lines: A, B = 0.1 mm; C, D = 0.2 mm.