Opisthoncus lineativentris L. Koch, 1880

(Fig. 14)

Opisthoncus lineativentris: Koch L. 1880: 1185; Peckham & Peckham 1886: 309; Simon 1903: 828; Rainbow 1911: 309; Żabka, 1991: 45.

Type material. 1M Syntype, ZMH, Mus. Godeffroy 7734, Australia: Rockhampton [Queensland].

Remarks. Koch and Keyserling (1880) described both sexes, the available material is represented only by male syntype.

Diagnosis. Both male cheliceral promarginal teeth small, retromargin unidentate (Fig. 14 F). Frontal cheliceral surface with sclerotized anterior ridge, terminated by small, vestigial spur (Fig. 14 E). Ventral spurs enlarged, lobelike (Fig. 14 F). Fangs with internal and external outgrowths (Fig. 14 E–F). Sternum relatively narrow (Fig. 14 D). Tegulum elliptic, embolus moderately long, arising at 6 o’clock. Differs from similar O. mandibularis by the shape of ventral spurs and slightly meandering translucent part of spermophore.

Description. Male (Fig.14) about 8.5 mm long. Cephalothorax trapezoid, broadest at PLE level (CW = 84% of CL) and moderately low (CH = 44% of CL), pale brown, covered with scattered fine, brown hairs (Figs 14 B–C). Surrounding of PLE black, others surrounded brown. Clypeus moderately narrow, dark brown, densely covered with long, pallid setae (Fig. 14 B). Chelicerae pale brown, with scattered brown hairs, armament as in diagnosis. Endites and labium orange with yellow anterior margins. Sternum yellow. Abdomen elongate-ovoid, yellow, sparsely covered with brown hairs and with pattern of longitudinal pallid area, bordered with brownish colour. Venter yellowish, somewhat darker on sides and centrally (Fig. 14 D). Spinnerets dark yellow. Legs orange, with darker femora. Pedipalps orange, brown haired. Palpal organ (Figs 14 G–J) tegulum moderately narrow, embolus distally set, spermophore slightly meandering, tibia about 75% of cymbium length, retrolateral tibial apophysis slender.

Dimensions. CL 3.60, CW 3.04, CH 1.60, AEW 2.42, PEW 2.60, EFL 1.28, AL 4.80, AW 2.48, L1 13.52 (3.60+3.00+3.60+2.20+1.12).

Female unknown (type specimen lacking).