Ilargus macrocornis, 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 : 18-19

Ilargus macrocornis sp. nov.

Figs 67–70 , 144

Type material. Holotype: male, ECUADOR: Morona Santiago: Cordillera de Cutucú; road from Patuca to Santiago, 2.8058° S, 78.2462° W, elev. 1000 m, 13 July 2004, coll. Maddison, Agnarsson, Iturralde, Salazar, WPM#04–040 (UBC-SEM AR00152, QCAZ).

Etymology. The specific epithet is from the combination of macro- (long, large) and cornis (horned), referring to the large spur on the front surface of the male chelicera.

Diagnosis. Differs from other species by the presence of a large spur on the front surface of the male chelicera ( Fig. 70 ).

Description. Male (holotype, UBC-SEM AR00152). Carapace length 1.7; abdomen length 1.7. Chelicera ( Fig. 70 ): red brown; front surface with a long curved spur proximally. Palp ( Figs 68–69 ): tibia and cymbium yellow brown, other segments cream. Embolus long and coiled for less a circle, with a short and thin lamella; proximal tegular lobe large; retrolateral tibial apophysis finger-like; ventral tibial bump absent. Measurements of legs: I 4.2, II 2.9, III 3.3, IV 3.8. Color in alcohol ( Fig. 67 ): carapace dark brown, eye area with guanine deposits, behind eye area with a medial and two marginal yellowish stripes; abdomen dark brown, with many silvery white speckles and a large leaf-like marking medially; legs yellowish to dark brown.

Female. Unknown.

Figures

FIGURES 67 – 70. Ilargus macrocornis sp. nov. 67 male holotype, dorsal view; 68 male left palp, ventral view; 69 male left palp, retrolateral view; 70 male left chelicera, internal view. Scale bars: 67, 1.0 mm; 68 – 70, 0.2 mm.

FIGURES 142 – 145. Living spider photos. 142 – 143 male of Ilargus pilleolus sp. nov.; 144 male of Ilargus macrocornis sp. nov.; 145 male of Maeota simoni sp. nov .. Figures 142 – 145 are copyright © 2012 W. P. Maddison, released under a Creative Commons Attribution (CC – BY) 3.0 license.