Opisthoncus polyphemus (L. Koch, 1867), L. Koch, 1867

Gardzińska, Joanna & Żabka, Marek, 2013, Redescription of the genus Opisthoncus L. Koch, 1880 (Araneae: Salticidae), Zootaxa 3717 (4), pp. 401-447: 436

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Opisthoncus polyphemus (L. Koch, 1867)


Opisthoncus polyphemus (L. Koch, 1867)  

( Fig. 24 View FIGURE 24 )

Type material. 3 F Syntypes, ZMH, Mus. Godeffroy 2259, Australia: Brisbane [Queensland].

Remarks. Koch and Keyserling (1867) described both sexes from Brisbane, Sydney, Rockhampton, Bowen, Peak Downs and Gayndah. The syntypes here came from Brisbane.

Diagnosis. Female cheliceral retromargin with two-cuspidate fissidentate tooth ( Fig. 24 View FIGURE 24 F). Copulatory openings relatively small, oriented mid-anteriorly, insemination ducts moderately long, with internal structures as in Fig. 24 View FIGURE 24 H. Differs from resembling O. serratofasciatus   by the position of spermathecae which are close to each other, the course of insemination ducts and abdominal colour pattern.

Description. Female ( Fig. 24 View FIGURE 24 ) about 6–6.5 mm long. Cephalothorax round and moderately high (CW = 92 % of CL, CH = 50 % of CL), pale brown, covered with recumbent, pallid scales, paler markings around eyes and central protuberance ( Figs 24 View FIGURE 24 B –C). Surrounding of eyes almost black. Clypeus narrow, pale brown, densely covered with pallid scales and setae, numerous and long below AME and making oblique traces on cheeks ( Fig. 24 View FIGURE 24 D). Chelicerae pale brown, with dentition as in diagnosis. Endites pale brown, labium dark brown, both with yellow anterior margins. Sternum wide, yellow, with scattered fine, brownish hairs ( Fig. 24 View FIGURE 24 E). Abdomen yellow, with rather indistinct colour pattern, clothed in recumbent pallid scales and scattered protruding brown hairs. Venter pale yellow, with elongate stripes of small orange spots. Spinnerets orange. Legs I orange, others paler. Pedipalps yellow, with orange tibiae and tarsi. Epigyne ( Figs 24 View FIGURE 24 G –H) with posterior notch slightly concave, copulatory openings moderately short, insemination ducts of uniform width, membranous parts coiled in one circle, sclerotized intermediate parts looped as in Fig. 24 View FIGURE 24 H, spermathecae moderately large, anteriorly close to each other. Dimensions. CL 2.48, CW 2.28, CH 1.24, AEW 1.68, PEW 1.76, EFL 0.96, AL 3.88, AW 2.12, L 1 5.56 (1.56 + 1.28 + 1.28 + 0.88 + 0.56).

Male unknown (type specimen lacking).