Opisthoncus necator L. Koch, 1881, L. Koch, 1881

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

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/F45B8781-331F-FFB0-94D0-FDD5B7EEFA63

treatment provided by

Plazi

scientific name

Opisthoncus necator L. Koch, 1881
status

 

Opisthoncus necator L. Koch, 1881  

( Fig. 20 View FIGURE 20 )

Opisthoncus necator: Koch L. 1881: 1237   ; Rainbow 1911: 309; Żabka 1991: 45.

Type material. 1 M Syntype, ZMH, Mus. Godeffroy 7727, Australia: Sydney [NSW].

Remarks. Of 2 males (Sydney and Rockhampton), designated as syntypes. only one corresponds with the original description and drawings. The second represents O. magnidens   .

Diagnosis. Male cheliceral retromargin pluridentate, with 3 similar teeth, promarginal teeth of different size, the distal one strongly enlarged ( Fig. 20 View FIGURE 20 F). Frontal spurs well developed and cone-shaped, ventral ones flat, lobelike and enlarged ( Fig. 20 View FIGURE 20 D, F). Fangs with internal outgrowths. Differs from similar O. magnidens   by shorter embolus, arising at 5 o’clock.

Description. Male ( Fig. 20 View FIGURE 20 ) about 6.5 mm long. Cephalothorax round and moderately high (CW = 88 % of CL, CH = 50 % of CL), brown, with yellow areas behind AME and PLE, densely covered with pale hairs and scattered brown bristles ( Figs 20 View FIGURE 20 B, D). Surrounding of eyes black. Clypeus narrow, yellow, with pallid hairs ( Fig. 20 View FIGURE 20 E). Cheliceral armament as in diagnosis. Chelicerae, endites and labium yellow-brownish. Sternum relatively wide, yellow, with darker margins, clothed in fine orange and pallid hairs ( Fig. 20 View FIGURE 20 C). Abdomen elongate, yellow, darker on sides, with longitudinal, serrated, pallid streak on orange background, covered with scattered brown hairs. Venter yellow, with elongate stripes of small greyish spots. Spinnerets yellow. Palpal organ ( Figs 20 View FIGURE 20 G –J) with embolus retrolaterally set, translucent part of spermophore not meandering, tibia about 55 % of cymbium length.

Dimensions. CL 2.76, CW 2.44, CH 1.40, AEW 1.64, PEW 1.76, EFL 0.96, AL 3.52, AW 2.08, L 1 8.76 (2.32 + 1.80 + 2.40 + 1.44 + 0.80).

Female unknown.