Borrala yabbra, Gray & Smith, 2004

Gray, M. R. & Smith, H. M., 2004, The “ Striped ” Group of Stiphidiid Spiders: Two New Genera from Northeastern New South Wales, Australia (Araneae: Stiphidiidae: Amaurobioidea), Records of the Australian Museum 56 (1), pp. 123-138: 123-138

publication ID 10.3853/j.0067-1975.56.2004.1394


persistent identifier

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scientific name

Borrala yabbra


Borrala yabbra   n.sp.

Figs. 5a–e, 8a

Etymology. The specific name is taken from Yabbra Scrub, Yabbra State Forest, one of the type localities.

Types. Australia, New South Wales. HOLOTYPE Ƌ KS70129, Wiangaree State Forest , NSW, 28°23'S 153°06'E, 16 Oct 1974, M. R. Gray GoogleMaps   . PARATYPES: ♀ KS57382, Yabbra Scrub , Yabbra SF, 28°38'S 152°30'E, 14 Dec 1988, Smith, Hines, Pugh & Webber, pitfall trap Y5 GoogleMaps   ,

dry subtropical rainforest, sheltered gully, 300–600 m, Focal Peaks Survey , UNE; ♀ KS57682, data as KS57382, pitfall trap Y2, dry subtropical rainforest, sheltered slope 600–900 m; Ƌ KS34758, data as holotype; Ƌ KS51321, Dome Mountain, Richmond Range & Yabbra SF, 28°28'S 152°43'E, 11 Dec 1988, Smith, Hines, Pugh & Webber, pitfall trap DM1, subtropical rainforest, swamp edge, sheltered, 600– 900 m, Focal Peaks Survey, UNE GoogleMaps   .

Other material. Australia, New South Wales. Ƌ KS57381, Yabbra Scrub, Yabbra SF, 28°38'S 152°30'E, 14 Dec 1988, Smith, Hines , Pugh & Webber, pitfall trap Y8, dry subtropical rainforest, 300–600 m, Focal Peaks Survey , UNE; Ƌ KS57383, data as KS57381 but trap Y4, sheltered slope; Ƌ KS60763, Dome Mountain , Richmond Range & Yabbra SF, 28°28'S 152°43'E, 11 Dec 1988, Smith , Hines , Pugh & Webber, pitfall, DM3, on unnamed peak to Wof Dome Mtn , Focal Peak Survey , UNE; Ƌ KS57687, data as KS60763 except trap DM6, road in subtropical rainforest, exposed ridge; Ƌ KS51295, Beaury SF, Tooloom Scrub , 28°35'S 152°22'E, 12 Dec 1988, Smith , Hines , Pugh & Webber, pitfall trap T7, bunya pine plantation, sheltered ridge, 600–900 m, Focal Peaks Survey, UNE; ♀♀ & juv. KS9231, Washpool SF, Coobadjah Ck, 0.6 km from Moongem Rd, 29°16'S 152°22'E, 10 Feb 1982, C. Horseman; Ƌ KS38094, Washpool SF, 29°16'S 152°22'E, 6–22 Feb 1992, M. Gray & P. Croft, Site 17C, Trap 9 GoogleMaps   .

Diagnosis. Separated from all species except B. dorrigo   by the thick, flattened embolic tip. Distal conductor more expanded and angular, and embolus shorter than in B. dorrigo   . Epigynal fossa trapezium-shaped, lateral margins usually concave.

Male (holotype). BL 7.04, CL 3.24 (2.65–3.24), CW 2.25, CapW 1.31, EGW 0.99, LL 0.47, LW 0.47, SL 1.50, SW 1.39. Legs: 1243 (I: 18.53; II: 15.13; III: 11.85; IV: 15.00); ratio tibia I length:CW = 1:0.45. Male Palp: ( Fig. 5a,b). Patella only slightly longer than wide. RTA robust, tapering from broad base. Conductor a thick, sclerotized stalk, strongly expanded distally (angular, box-like) and extending retrolaterally and ventrally beyond the end of the wide embolic groove and embolus apex. Embolus a relatively short, thick, curved rod, distal part flattened and curving ventrally in the embolic groove. Tegular window smaller than in B. dorrigo   .

Female (KS57382). BL 5.76, CL 2.73 (2.20–2.73), CW 1.88, CapW 1.27, EGW 0.92, LL 0.41, LW 0.41, SL 1.33, SW 1.14. Legs: 1423 (I: 10.86; II: 8.78; III: 7.47; IV: 9.18); ratio tibia I length:CW = 1:0.69. Epigynum: (KS57682; Fig. 5c,d). Shallow, trapezium-shaped fossa, narrowestanteriorly; lateral margins usually weakly concave, rather than straight. Internal genitalia:(KS57682; Fig. 5e). Copulatoryducts broad, lateral margins weakly concave proximally, then convex. Spermathecae in broad contact medially.

Distribution. Clarence River catchment from the northern Richmond Range to the Washpool State Forest region, NE New South Wales.

Nov 1969, M. R. Gray, damp forest. PARATYPE ♀ KS77192, data as holotype GoogleMaps   .

Diagnosis. Male palpal patella clearly longer than in other species ( Fig. 6b [cf. Fig. 7b]). Epigynal fossa ovoid.

Male (holotype). BL 5.02, CL 2.45, CW 1.84, CapW 1.02, EGW 0.75, LL 0.35, LW 0.35, SL 1.16, SW 1.14. Legs: 1423 (I: 10.94; II: 9.18; III: 7.92; IV: 9.47); ratio tibia I length:CW = 1:0.69. Legs somewhat shorter than in other species. Male Palp: ( Fig. 6a,b). Femur and patella relatively elongate, patella about 2.5× longer than wide; tibia robust. RTA large and very thick basally. Cymbium apical area relatively shorter and with fewer bristles (0–1); cymbial flange of moderate size. Conductor T-shaped; “head of T” short and wide, the retrolateral end shallowlybifurcate with the broad embolic groove ending upon the upper, sclerotized, beak-like process. Embolus thick basally, gradually tapering until flattening distally into a wide, translucent flange with a thicker dorsal edge and pointed apex. Tegular window small.

Female (KS77192). BL 6.04, CL 2.37, CW 1.67, CapW 1.10, EGW 0.73, LL 0.33, LW 0.37, SL 1.12, SW 1.06. Legs: 1423 (I: 8.49; II: 7.02; III: 6.04; IV: 7.31); ratio tibia I length:CW = 1:0.82. Legs somewhat shorter than in other species. Epigynum: (KS77192; Fig. 6c). Strongly

straight and relatively narrow. Spermathecae adjacent, slightly separated medially.

Distribution. Known only from the type locality on the edge of the New England escarpment.


Departamento de Geologia, Universidad de Chile