Opisthoncus devexus Simon, 1909, Simon, 1909

Gardzińska, Joanna & Żabka, Marek, 2013, Redescription of the genus Opisthoncus L. Koch, 1880 (Araneae: Salticidae), Zootaxa 3717 (4), pp. 401-447: 413-417

publication ID

http://dx.doi.org/10.11646/zootaxa.3717.4.1

publication LSID

lsid:zoobank.org:pub:55248289-2E05-4F07-BFC7-99AFED7D4E93

persistent identifier

http://treatment.plazi.org/id/F45B8781-330E-FFBD-94D0-F934B7F1FD53

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Plazi

scientific name

Opisthoncus devexus Simon, 1909
status

 

Opisthoncus devexus Simon, 1909  

( Fig. 10 View FIGURE 10 )

Opisthoncus devexus: Simon 1909: 205   ; Rainbow 1911: 309; Żabka 1991: 45.

Type material. 1 M neotype, MNHN 24309, Austral. occid (Michaelsen), Western Australia; 1 juv. ZMH 67, Dr. W. Michaelsen, ded. 1 X. 1909., Hambg. S.W. Austral. Exp. 1905, Dirk Hartog, Brown Station, 7.VI. 1905.

Remarks. The type specimen described by Simon (1909) has originally been deposited in Godeffroy Museum in Hamburg; currently only juvenile female [indentified as O. devexus   ] occurs there. The male deposited in the Muséum National d’Histoire Naturelle (Paris) corresponds with the original description. We consider it the neotype.

Diagnosis. In comparison with similar O. parcedentatus   cephalothorax more round; both teeth on cheliceral promargins of similar size ( Fig. 10 View FIGURE 10 D). Each frontal spur finger-like ( Figs 10 View FIGURE 10 C, E), ventral spur lobe-like, relatively small and adjoined the proper retromarginal unidentate tooth, palpal tibia relatively shorter (less than 50 % of cymbium length).

Description. Male ( Fig. 10 View FIGURE 10 ) about 5 mm long. Cephalothorax ( Figs 10 View FIGURE 10 A –C) round and moderately high (CW = 88 % of CL CH = 49 % of CL), brown with eye field somewhat paler, clothed in scattered brown bristles and pale scales. Surrounding of eyes almost black. Clypeus narrow, pale brown, covered with pallid hairs. Cheliceral retromargin of unidentate pattern ( Fig. 10 View FIGURE 10 D). Chelicerae, endites and labium brown, the latter with yellow anterior margins. Sternum moderately round, yellow, with scattered brownish hairs ( Fig. 10 View FIGURE 10 F). Abdomen elongate ovoid, yellow, with scattered brown bristles and colour pattern of longitudinal pallid area on orange background. Venter yellowish, with elongate brownish stripes on sides. Spinnerets orange. Legs brown-orange, first pair darker than others. Palpal organ ( Figs 10 View FIGURE 10 G –J) orange, embolus long and arising at 7 o’clock, tegulum moderately narrow, translucent part of spermophore not meandering, palpal tibia short (about 45 % of cymbium length).

Dimensions. CL 2.05, CW 1.83, CH 1.00, AEW 1.40, PEW 1.45, EFL 0.80, AL 2.80, AW 1.58, L 1 5.23 (1.50 + 1.13 + 1.25 + 0.85 + 0.50).

Female unknown.