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 10.11646/zootaxa.3717.4.1 23e9c4f0-f1c2-4ab7-8d5a-2cf7d90c88a0 1175-5326 246494 55248289-2E05-4F07-BFC7-99AFED7D4E93 Opisthoncus albiventris L. Koch, 1881 ( Fig. 4 ) Opisthoncus albiventris : Koch L. 1881: 1228 ; Rainbow, 1911: 308; Żabka 1991: 44. Type material. 1F Syntype , ZMH, 7725, Mus. Godeffroy, Australia : Sydney [NSW]. Remarks. Koch and Keyserling (1881) described both sexes from Sydney. The material labelled as “ type ” includes 2 females , but only one of them corresponds with the original description. The second female belongs to O . keyserlingi (previously Hasarius albiventris ). Diagnosis. Differs from close O . parcedentatus by the course of insemination ducts and orientation of spermathecae. Copulatory openings relatively small, oriented mid-anteriorly, posterior notch rounded, slightly concave. Membranous parts of insemination ducts coiled in one circle, intermediate ducts relatively short, curved and looped as in Fig. 4 H. Description. Female ( Fig. 4 ) about 5 mm long. Cephalothorax moderately narrow and high (CW = 75% of CL, CH = 46% of CL), pale brown, sparsely covered with short, pallid scales ( Figs 4 B,C). Surrounding of eyes black. Clypeus moderately wide, pale brown, covered with numerous pallid scales and setae, longer and denser in the centre ( Fig. 4 E). Cheliceral retromargin with 2-cuspidate fissident tooth ( Fig. 4 F). Chelicerae, endites and labium pale brown, the latter with yellow anterior margins. Sternum moderately round, orange, clothed in scattered fine, pallid hairs ( Fig. 4 D). Abdomen yellowish-orange, with medial longitudinal whitish area and pattern of transverse whitish stripes and brown spots as in Fig. 4 C. Venter whitish, with visible guanine deposits and brown stripes along the sides ( Fig. 4 D). Spinnerets yellow. Legs I, II with coxae and femora yellow and other podomeres orange. Other legs yellow. Pedipalps yellow with orange tarsi. Epigyne as illustrated in Figs 4 G–H. Dimensions. CL 2.24, CW 1.68, CH 1.04, AEW 1.56, PEW 1.60, EFL 0.80, AL 2.80, AW 1.44. Male unknown ( type specimen lacking).