Omoedus tortuosus, Zhang & Maddison, 2012

Zhang, Jun-Xia & Maddison, Wayne P., 2012, New euophryine jumping spiders from Papua New Guinea (Araneae: Salticidae: Euophryinae) 3491, Zootaxa 3491, pp. 1-74 : 35-36

Omoedus tortuosus sp. nov.

Figs 159–169

Type material. Holotype: male, PAPUA NEW GUINEA: Enga Province: Paiam Forest, near Suyan Village , 5.495° S, 143.144° E, elev. 2400 m a.s.l., 10 July 2008, coll. W. Maddison, Pingisa Saiké, Yainé Ribson, S. Soté, & N. Soté, WPM#08-007 ( UBC-SEM AR00131 ) . Paratypes: 1 female, same data as holotype ( UBC-SEM AR00132 ) ; 1 male and 2 females, same data as holotype ; 2 females, PAPUA NEW GUINEA: Enga Province: Kai-ingri , 5.574° S, 143.048° E, elev. 3315 m a.s.l., 5–8 July 2008, coll. W. Maddison, WPM#08-004 ; 1 male, PAPUA NEW GUINEA: Enga Province: Kai-ingri , 5.579° S, 143.053° E, elev. 3240 m a.s.l., 7–9 July 2008, coll. W. Maddison & Manisé Kulé, WPM#08-005 .

Etymology. Latin tortuosus (twisting), referring to the convoluted copulatory duct of vulva.

Diagnosis. Resembles Omoedus papuanus in body form, but differs from it by the color pattern ( Figs 159–164), the shape of the median septum of the epigynum ( Fig. 168), the thicker retrolateral tibial apophysis and the narrower but more spiraled embolus of the male palp ( Figs 165–166).

Description. Male (holotype, UBC-SEM AR00131). Carapace length 2.5 (variation 2.2–2.5, n=3); abdomen length 2.7. Chelicera ( Fig. 167): dark brown; with two promarginal teeth and one retromarginal tooth. Palp ( Figs 165–166): yellow brown. Retrolateral sperm duct loop occupying about three quarters of bulb width. Embolus long and coiled for more than seven circles. Retrolateral tibial apophysis long and finger-like. Tibia of first leg with four proventral and three retroventral macrosetae; metatarsus with two pairs of ventral macrosetae. Measurements of legs: I 7.2, II 5.2, III 5.4, IV 6.1. Color in alcohol ( Fig. 163): eye area dark, other regions of carapace red brown; abdomen dark brown, with some brownish spots; legs light yellow proximally and dark brown distally.

Female (paratype, UBC-SEM AR00132). Carapace length 2.2 (variation 2.1–2.3, n=5); abdomen length 2.6. Chelicera: with two promarginal teeth and one retromarginal tooth. Measurements of legs: I 4.1, II 3.8, III 4.5, IV 5.1. Epigynum ( Figs 168–169): window large; margins of median septum slightly convex. Color in alcohol ( Fig. 164): similar to that of male except the brownish spots on dorsal abdomen more irregular.

Natural history. Specimens were found in suspended leaf litter in forest.