Soesilarishius micaceus, Zhang, Jun-Xia & Maddison, Wayne P., 2012

Zhang, Jun-Xia & Maddison, Wayne P., 2012, New euophryine jumping spiders from Central and South America (Araneae: Salticidae: Euophryinae), Zootaxa 3578, pp. 1-35 : 26

Soesilarishius micaceus sp. nov.

Figs 102–108

Type material. Holotype: male, ECUADOR: Sucumbios: Reserva Faunistica Cuyabeno, Laguna Grande, Neotropic cabins; camp area & trail to Sendero La Hormiga, 22–27 April 1994, coll. W. Maddison, WPM#94–025 (UBC-SEM AR00161, QCAZ). Paratypes: 1 female, same data as holotype (UBC-SEM AR00162); 7 males, same data as holotype; 3 females, ECUADOR: Napo: Reserva Faunistica de Cuyabeno, Laguna Grande, PUCE field station, Sendero Campamento, trail through forest, 25–29 June 1988, coll. W. Maddison, WPM#88–007.

Etymology. The specific epithet is derived from the Latin mica (crumb), referring to the small size of this species.

Diagnosis. Differs from Soesilarishius amrishi Makhan, 2007 in the long embolus ( Fig. 104 ). Similar in the color pattern and markings to S. ruizi ( Figs 102–103 ), but can be distinguished by the long and slender embolus ( Fig. 104 ), the presence of a roof and the absence of a medial groove on the epigynum ( Fig. 107 ), the longer copulatory duct of the vulva ( Fig. 108 ).

Description. Male (holotype, UBC-SEM AR00161). Carapace length 1.0 (variation 0.9–1.1, n=8); abdomen length 0.7. Chelicera ( Fig. 106 ): yellow brown. Palp ( Figs 104–105 ): yellow brown. Embolus long and coiled, coming from prolateral side of bulb; retrolateral tibial apophysis short and finger–like. First tibia with three pairs of ventral macrosetae; first metatarsus with two pairs. Measurements of legs: I 1.7, II 1.4, III 2.0, IV 1.7. Color in alcohol ( Fig. 102 ): carapace dark brown to dark yellow brown; abdomen gray brown with light yellow spots and markings, anterior and median part with a relatively sclerotized area; legs brown to light yellow.

Female (paratype, UBC-SEM AR00162). Carapace length 0.9 (variation 0.9–1.1, n=4); abdomen length 1.0. First tibia with three pairs of ventral macrosetae; first metatarsus with two pairs. Measurements of legs: I 1.7, II 1.4, III 1.8, IV 1.8. Epigynum ( Fig. 107 ): with a median transverse “roof”; opening to copulatory duct anteriorly. Vulva ( Fig. 108 ): copulatory duct long and convoluted; spermatheca small, not strongly swollen. Color in alcohol ( Fig. 103 ): similar to that of male.

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

Figures

FIGURES 102 – 108. Soesilarishius micaceus sp. nov. 102 male holotype, dorsal view; 103 female paratype, dorsal view; 104 male left palp, ventral view; 105 male left palp, retrolateral view; 106 male left chelicera, back view; 107 epigynum, ventral view; 108 cleared epigynum, dorsal view. Scale bars: 102 – 103, 0.5 mm; 104 – 108, 0.1 mm.