Opisthoncus mordax L. Koch, 1880

Gardzińska, Joanna & Żabka, Marek, 2013, Redescription of the genus Opisthoncus L. Koch, 1880 (Araneae: Salticidae), Zootaxa 3717 (4), pp. 401-447 : 427-430

Opisthoncus mordax L. Koch, 1880

( Fig. 19 )

Opisthoncus mordax: Koch L. 1880: 1192 ; Simon 1903: 826, 828; Rainbow 1911: 309, 1912: 202; Żabka, 1991: 46.

Type material. 1M Holotype, ZMH, Mus. Godeffroy 7732, Australia: Sydney [NSW].

Diagnosis. Male cheliceral promarginal teeth differ in size: distal larger than the proximal one ( Figs 19 F–G). Retromargin with 3 small teeth, located close to each other ( Fig. 19 G). Frontal cheliceral surfaces with horn-like spurs ( Fig. 19 F). Each ventral spur large, flat and lobe-like as in Fig. 19 G. Fangs with internal outgrowths. Pedipalps lacking, however original drawings by Keyserling show moderately long embolus, arising at about 7 o’clock.

Description. Male ( Fig. 19 ) about 5.5 mm long. Cephalothorax round, moderately high (CW = 85% of CL, CH = 49% of CL), pale brown, darker posteriorly and on eye field, covered with fine, pallid hairs ( Fig. 19 B). Surrounding of AME brown, of others black. Clypeus narrow, dark brown, with pallid hairs ( Fig. 19 D). Chelicerae pale brown, with armament as in diagnosis. Endites and labium darker, with yellow anterior margins. Sternum relatively wide, yellow with brownish margins, clothed in fine pallid hairs ( Fig. 19 E). Abdomen elongate ovoid, yellow-orange with longitudinal pallid area on darker background, as in Fig. 19 B. Venter yellowish, with elongate stripes of small, orange spots. Spinnerets orange. Legs I pale brown, others yellow, all with dark brown femora. Pedipalps lacking.

Dimensions. CL 2.44, CW 2.08, CH 1.20 AEW 1.64, PEW 1.68, EFL 0.92, AL 3.00, AW 1.88, L1 7.24 (1.84+1.60+1.80+1.20+0.80).

Female unknown.

Figures

FIGURE 19. Opisthoncus mordax L. Koch, 1880, male holotype. A: original drawings from Koch & Keyserling (1880); B – C: general appearance, dorsal and lateral views; D: cephalothorax, frontal view; E: sternum; F – G: chelicerae, frontal and ventral views. Scale bars B, C: 1 mm.