Grayenulla spinimana, Żabka & Gray, 2002

Żabka, M. & Gray, M. R., 2002, Salticidae (Arachnida: Araneae) from Oriental, Australian and Pacific Regions, XVI. New Species of Grayenulla and Afraflacilla, Records of the Australian Museum 54, pp. 269-274 : 270-271

Grayenulla spinimana n.sp.

Fig. 1

Type material. HOLOTYPE Australia: Western Australia: 3, Cape Cuvier, Quobba Stn, 24°13'27.1"S 113°22'40.8"E, WAM/CALM Carnavon Survey , wet pits, P. West et al., 21 Aug–29 Sep 1994, WAM 99/2185. P ARATYPES Australia: Western Australia: 43, Cape Cuvier , Quobba Stn , 24°13'27.1"S 113°22'40.8"E, WAM/CALM Carnavon Survey , wet pits, 21 Aug–29 Sep 1994, P. West et al., WAM 99/2186–9; 2 3, same data, WAM 99/2176–7; 5 3, same data, WAM 99/2191–5; 3, same data, WAM 99/2196; 43, same data, WAM 99/2178–81; 2 3, 1 j, same data, 15 Jan– 30 May 1995, A. Sampey et al., WAM 99/2182–4; 3, same data, WAM 99/2190; 1♀, same data, WAM 99/2197; 13, Kennedy Range NP, 24°29'33.7"S 115°01'50.1"E, wet pits, 18 Aug–6 Oct 1994, M. Harvey et al., WAM 99/2198; 3, same data, E, N. Hall, WAM 99/2199.

Diagnosis. Differs from other species of Grayenulla by the abdominal pattern, embolus shape, the form of the seminal reservoir and the massive accessory glands.

Description

Male holotype. Cephalothorax brown. Eye field with numerous white and orange hairs—numerous and long in its median part and with brown bristles—more numerous anteriorly. Thorax with white hairs. Abdomen with central dark brownish stripe on beige background and dark lateral areas made of narrow lines. Abdomen hirsute, covered with numerous light or dark hairs on light or dark background, respectively. Spinnerets smudged grey-brown. Clypeus brown with yellowish, orange and brown hairs and bristles—less numerous than in other species. Chelicerae honey-brown with 3 promarginal teeth and single bicuspidate retromarginal tooth. Maxillae, labium and sternum brownish, venter beige. Legs I brown, II and III lighter brown, IV—smudged honey orange. All legs armed with numerous long spines (femora to metatarsi)—almost in oxyopid-like manner. Palpal organ ( Fig. 1A–C). Femur with prolateral process, tibia with 2 distinctive apophyses: retrolateral conical, ventrolateral curved distally. Tegulum conical with retrolateral process. Embolus distally daggerlike. Dorsal femora, patellae and tibiae with contrasting long white hairs. Dimensions: CL 2.18 , EFL 0.78, AEW 1.45 , PEW 1.50 , CW 1.71 , AL 1.56 .

Female. Eye field brownish, eye surrounds darker, thorax smudged brown. Cephalothorax hair cover dense, whitish, adpressed. Ocular area with brown protruding bristles numerous anteriorly. Abdomen ( Fig. 1D) round, with distinctive longitudinal brown pattern with yellowish margins and rows of smudged orange and grey-brown lateral stripes. Hairs numerous, yellowish and brownish on light and dark areas, respectively. Whole surface also with less numerous brown bristles, same as in male. Anterior and median spinnerets orange, posterior ones brownish. Clypeus orange-brown with numerous white hairs and single long bristles. Chelicerae light-brown with yellow chewing margins, promargin with 2 teeth, retromargin with one tricuspidate tooth. Pedipalps orange with numerous white, yellowish and brown hairs. Maxillae pale orange-yellow, labium brownish, both with pale chewing margins. Sternum smudged orange, with white protruding hairs marginally. Venter light beige with darker central pattern of transverse stripes. First legs rather stout with greyish bands in proximal and distal parts of podomeres. Other legs similar in colour though more delicate. All legs armed with numerous spines. Hair cover moderately dense, whitish and brownish. Bristles brown. Epigyne ( Fig. 1E) with distinctive copulatory openings and with 2 posterior pockets. Internal genitalia ( Fig. 1F) with unusually massive accessory glands and large oval spermathecae accompanied by their own accessory glands. Dimensions: CL 1.60, EFL 0.60, AEW 1.14, PEW 1.21, CW 1.35, AL 1.60.

Distribution ( Fig. 5). Known only from localities in Western Australia.

Etymology. The proposed name refers to the spiny legs.