Proszynellus nasalis, Patoleta, Barbara & Żabka, Marek, 2015

Patoleta, Barbara & Żabka, Marek, 2015, Proszynellus — a new jumping spider genus from Australia (Araneae: Salticidae), Zootaxa 3926 (2), pp. 257-267 : 259

Proszynellus nasalis sp. nov.

Figs 1–18 , 49

Type material. AUSTRALIA, Western Australia: ♂ holotype, Ashendon Road, Carinyah Forest Block, off Brooklon Highway, 32°08' S, 116°11' E [-32.133; 116.183], Marri trees [ Corymbia calophylla ], bark trap, 24 April 1999, R. Graham, WAMP T131948; ♂♀ paratypes, same data; ♀ paratype, Parmelia (near Kwinana), 32°15' S, 115°49' E [-32.265, 115.821], 30 May 1987, A.E. De Jong, WAMP 88/2154.

Additional material examined. AUSTRALIA, Western Australia: 2♂, Karragulen, 32°07' S, 116°09' E [- 32.116; 116.15], Marri trees, bark traps, 24 April 1999, R. Graham, WAMP T131951; 1♀, Mt. Cooke, 32°25' S, 116°18' E [-32.416; 116.3], hand collecting, 27 April 1992, M. Harvey & J.M. Waldock, WAMP T131952; 1♀, Parmelia (near Kwinana), 32°15' S, 115°49' E [-32.265, 115.821], 6 April–1 May 1989, A.E. De Jong, WAMP T131958; 1♂, Jarrahdale (Alcoa), Mine area, 31º16' S, 116º06' E [-31.266, 116.1], wet pitfall traps, April 1999, K.E.C. Brennan, WAMP T49430; 1♂, Parmelia (near Kwinana), 32°15' S, 115°49' E [-32.265, 115.821], 28 May 1987, A.E. De Jong, WAMP 88/28; 1♂, Parmelia (near Kwinana), 32°15' S, 115°49' E [-32.265, 115.821], 3 June 1987, A.E. De Jong, WAMP 88/29; 1♂, Jarrahdale (Alcoa), Mine area, 31º16' S, 116º06' E [-31.266, 116.1], wet pitfall traps, April 1998, K.E.C. Brennan, L. Ashby, WAMP T 49436.

Etymology. The species’ name, to be treated as a noun in apposition, refers to the appearance of the epigyne, reminiscent of the face of the proboscis monkey ( Nasalis larvatus Wurmb).

Diagnosis. Male palpal femur with very small bump ( Fig. 7 ), embolus thin and pointed, dagger-like, accompanied by membranous pars pendula ( Fig. 8 ), epigynal scape single, very long ( Figs 16–17 ).

Description. Male holotype ( Figs 1–10 ). Cephalothorax dark brown with two darker spots on eye field and with PLE on black surroundings. White hairs scarce, more numerous from fovea forwards; darker and longer bristles above anterior eyes. Abdomen dark grey, with slightly lighter pattern of chevrons and with terminal light grey tuft of hairs. Spinnerets dark grey, not distinctive. Chelicerae brown, distally lighter ( Fig. 5 ). Maxillae, labium and sternum brown-grey, the latter with darker margins ( Fig. 2 ). Venter brownish-grey, sides with dark and lighter lines. First legs dirty-brownish, darker around joints; other legs lighter, especially in proximal parts of segments. Leg formula: 4-1-3-2. Palpal organ as illustrated in Figs 6–10 . Dimensions: CL 1.44, CW 1.02, CH 0.49, AL 1.58, AW 0.99, AEW 0.81, PEW 0.74, EFL 0.56, ClypH 0.01, DAM 0.23, L1 2.31 (0.70 + 0.45 + 0.51 + 0.38 + 0.27), L2 1.87 (0.58 + 0.35 + 0.38 + 0.31 + 0.25), L3 1.92 (0.57 + 0.29 + 0.39 + 0.41 + 0.26), L4 2.50 (0.79 + 0.35 + 0.59 + 0.49 + 0.28).

Female paratype ( Figs 11–18 ). Colouration and structure of dorsum very similar to the male. Chelicerae, maxillae and labium pale brownish ( Fig. 15 ). Sternum dirty-grey. Venter beige-grey ( Fig. 12 ). Legs dirty-grey with pale rings. Leg formula: 4-1-3-2. Epigyne as in Figs 16–18 . Dimensions: CL 1.55, CW 1.02, CH 0.48, AL 1.90 AW 1.05, AEW 0.87, PEW 0.81, EFL 0.63, ClypH 0.01, DAM 0.28, L1 2.38 (0.77 + 0.46 + 0.52 + 0.38 + 0.25), L2 2.10 (0.66 + 0.41 + 0.45 + 0.34 + 0.24), L3 2.25 (0.68 + 0.35 + 0.46 + 0.50 + 0.26), L4 3.06 (0.94 + 0.44 + 0.75 + 0.60 + 0.33).

Figures

FIGURE 49. Records for species of Proszynellus: P. nasalis (yellow circles), P. wandae (black squares), P. occidentalis (blue triangles).

FIGURES 1 – 10. Proszynellus nasalis sp. nov. 1 male holotype, dorsal view; 2 same, ventral view; 3 same, chelicerae, endites and labium, ventral view; 4 same, cephalothorax, lateral view; 5 same, frontal view; 6 same, left palp, retrolateral view; 7 same, prolateral view; 8 same, ventro-lateral view, showing detail of embolus tip; 9 same, ventral view; 10 same, retrolateral view (cf: cymbial flange, e: embolus, ep: endite protuberance, fb: femoral bump, m: membranous structure, pp: pars pendula, rta: retrolateral tibial apophysis, tl: posterior tegular lobe). Scale: 1 – 5 = 1 mm, 9 – 10 = as in Fig.

FIGURES 11 – 18. Proszynellus nasalis sp. nov. 11 female paratype, dorsal view; 12 same, ventral view; 13 same, lateral view; 14 same, frontal view; 15 same, endites, labium and chelicerae, ventral view; 16 – 17 same, epigyne, ventral view; 18 same, vulva, dorsal view (ag: accessory gland, cl: caudal lobe, cd: copulatory duct, co: copulatory opening, dch: distal chamber, pch: proximal chamber, s: spermatheca). Scale: 11 – 14 = 1 mm, 17 = as in Fig.