Redescription of the genus Opisthoncus L. Koch, 1880 (Araneae: Salticidae) Author Gardzińska, Joanna Author Żabka, Marek text Zootaxa 2013 3717 4 401 447 journal article 43005 10.11646/zootaxa.3717.4.1 23e9c4f0-f1c2-4ab7-8d5a-2cf7d90c88a0 1175-5326 246494 55248289-2E05-4F07-BFC7-99AFED7D4E93 Opisthoncus rubriceps (Thorell, 1881) ( Fig. 26 ) Marptusa rubriceps : Thorell 1881: 437 . Trite rubiceps : Simon, 1903: 829 . Opisthoncus rubiceps : Żabka 1991: 47 . Type material. 1M Holotype , MCSNG, Australia : Somerset, Cape York [Queensland], leg. L. M. D’Albertis. Diagnosis. Male cheliceral promarginal teeth vary in size ( Figs 26 B, D). Retromargins of unclear pattern, with 4–5 teeth. Frontal spurs conical ( Fig. 26 B). Ventral spurs flat, small, located close to the proper retromarginal teeth ( Fig. 26 D). Tegulum elliptic, narrow, embolus moderately long, arising at about 6 o’clock. Differs from other species by combination of palpal organ details and cheliceral armament. Description. Male ( Fig. 26 ) about 6 mm long. Cephalothorax moderately round (CW = 85% of CL) and rather flat ( CH = 42% of CL), light brown, covered with fine, pallid scales ( Figs 26 A–C). Surrounding of eyes black. Clypeus very narrow, light brown, covered with sparse pallid setae ( Fig. 26 B). Chelicerae pale brown, endites and labium orange-yelow, sternum relatively wide, yellow. Abdomen elongate, yellow with orange dorsal scutum, colour pattern rather indistinct ( Fig. 26 A). Venter yellowish, with elongate stripes of small grey dots. Spinnerets yellow. Legs I brown, others orange-brownish. Palpal organ ( Figs 26 E–G): tegulum elliptic, moderately narrow, embolus set distally, translucent part of spermophore not meandering, tibia 47% of cymbium length, retrolateral tibial apophysis moderately long. Dimensions. CL 2.40, CW 2.05, CH 1.00, AEW 1.40, PEW 1.50, EFL 0.85, AL 3.65, AW 1.55, L1 7.55 (2.05+1.60+2.00+1.25+0.65) Female unknown.