Gamasomorpha comosa, 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 : 23

Gamasomorpha comosa sp. nov.

Figs 1A–C , 2A–C , 3A–E .

Type material: Holotype male, 7 males and 25 females paratypes, CHINA: Hainan Province, Bawangling National Natural Reserve, 24–29 July 2007, SQ Li & CX Wang leg.; 11 males and 8 females paratypes, CHINA: Hainan Province, Jianfengling National Natural Reserve, 17–20 July 2007, SQ Li & CX Wang leg.; 2 males and 8 females paratypes, CHINA: Hainan Province, Limushan National Natural Reserve, 12–13 August 2007, SQ Li & CX Wang leg.; 1 male and 3 females paratypes, CHINA: Hainan Province, Sanya City, Liudao coast (alt. 576 m, 18°10.645´N, 109°33.989´E), 15 July 2007, SQ Li & CX Wang leg.; 6 males and 13 females paratypes, CHINA: Hainan Province, Wuzhishan National Natural Reserve, 4–7 August 2007, SQ Li & CX Wang leg.; 1 male and 3 females paratypes, CHINA: Hainan Province, Yinggeling National Natural Reserve, 2 August 2007, SQ Li & CX Wang leg. All type materials are deposited in IZCAS.

Etymology: The specific name comes from a Latin word, comosus, meaning “with long hairs”, referring to the medially long hairs on dorsal surface of carapace.

Diagnosis: The new species can be easily distinguished from all the other congeners by the shape of booklung covers, which is rectangular, and strongly chitinized at anterolateral edge ( Figs 2B, C ), by the smooth sternum ( Fig. 1C ), and by the carapace anterior strongly narrowed ( Figs 1A , 3A ) and with medially long hairs on dorsal surface.

Description: Male. Body yellowish brown, chelicerae and sternum lighter, legs yellow. Body length 2.42–2.71; carapace 1.14–1.17 length, 0.91–0.97 width; abdomen 1.48–1.66 length, 1.03–1.14 width. Clypeus with a row of finely hairs at anterior margin; clypeus height about 0.3 times the diameter of anterior eyes. Pars cephalica slightly elevated in profile ( Fig. 1B ). Carapace smooth all over, anterior strongly narrowed ( Figs 1A , 3A ), with a row of finely hairs along margin; its dorsal surface with two rows of short, finely hairs laterally and several directed long hairs medially, the long hairs about 5–6 times as long as the short lateral hairs ( Fig. 3B ). Eyes six, ALE slightly larger, PLE smallest, ALE separated by less than its radius; posterior eye row nearly straight in dorsal view. Labium with 2 setae at anterior margin. Sternum smooth, with narrow, transverse palpal groove, covered with thin hairs standing in small pits; without radial furrows ( Fig. 1C ). Measurements of legs: I 3.07 (0.91, 0.43, 0.68, 0.63, 0.42); II 3.07 (0.91, 0.43, 0.68, 0.63, 0.42); III 2.65 (0.80, 0.37, 0.54, 0.60, 0.34); IV 3.53 (1.06, 0.48, 0.74, 0.83, 0.42). Leg formula: IV–I–II–III. Dorsal scutum ovoid, punctate, densely covered with short hairs. Booklung covers nearly rectangular, anterolateral edge with well developed tubercle. Pedicel tube short, without dorsolateral extension, scuto-pedicel region unmodified ( Figs 2B, C ). Sperm pore small, slit-like. Colulus represented only by two setae. Cymbium and bulbus of palp yellowish white, the other segments yellow. Bulbus longer than cymbium, apex conical, acute tipped. Embolus-conductor complex, mesially bent in dorsal view ( Figs 3C, D ).

Female. Similar to male in coloration and general features, but body size larger, sternum without palpal groove. Body length 2.79–3.27; carapace 1.14–1.31 length, 0.96–1.10 width; abdomen 1.75–1.93 length, 1.37–1.45 width. Measurements of legs: I 3.40 (1.03, 0.48, 0.79, 0.69, 0.41); II 3.40 (1.03, 0.48, 0.79, 0.69, 0.41); III 3.16 (0.96, 0.45, 0.65, 0.69, 0.41); IV 3.93 (1.14, 0.52, 0.89, 0.93, 0.45). Epigastric area without any external specialities ( Fig. 2A ). Vulva with a large receptaculum and complicated sclerites ( Fig. 3E ).

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 3 A – E. Gamasomorpha comosa sp. nov. A – B. Female carapace, dorsal (A) and lateral (B) views; C – D. Left male palp, dorsal (C) and prolateral (D) views; E. Vulva, dorsal view. Scale lines: A, B, C = 0.2 mm; D, E = 0.1 mm.