Ilargus moronatigus, 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 : 19-21

Ilargus moronatigus sp. nov.

Figs 71–74

Type material. Holotype: female, ECUADOR: Morona Santiago: km 44 from Limón towards Gualaceo, 3.0069° S, 78.6425° W, elev. 3000 m, cloud forest, 11 July 2004, coll. Maddison, Agnarsson, Iturralde, Salazar, WPM#04–025 (UBC-SEM AR00153, QCAZ). Paratypes: 1 female, same data as holotype; 2 females, ECUADOR: Morona Santiago: km 38 from Limón towards Gualaceo, 3.0108° S, 78.6150° W, elev. 2725 m, cloud forest, 11–15 July 2004, coll. Maddison, Agnarsson, Iturralde, Salazar, WPM#04–026.

Etymology. The specific epithet is derived from the name of the province where the species was discovered.

Diagnosis. Similar to Ilargus galianoae in markings ( Fig. 71 ), but differs in the smaller window, the absence of wave-like ridge in the window of the epigynum ( Fig. 73 ), and the shorter and less convoluted copulatory duct of the vulva ( Fig. 74 ).

Description. Female (holotype, UBC-SEM AR00153). Carapace length 1.6 (variation 1.4–1.6, n=4); abdomen length 1.9. Chelicera ( Fig. 72 ): yellow brown. Measurements of legs: I 2.4, II 2.1, III 2.6, IV 3.4. Epigynum ( Fig. 73 ): window small; opening at posterior margin of window. Vulva ( Fig. 74 ): copulatory duct thin and slightly convoluted, with accessory gland near the beginning; spermatheca almost kidney-shaped. Color in alcohol ( Fig. 71 ): carapace gray brown with indistinct yellowish markings, eye area dark brown, thoracic area with a narrow yellowish brown stripe; abdomen dark brown, with light yellow speckles and markings; legs yellowish brown.

Male. Unknown.

FIGURES 75–83. Ilargus pilleolus sp. nov. 75 male paratype, dorsal view; 76 female paratype, dorsal view; 77 male left palp, ventral view; 78 male left palp, retrolateral view; 79 female carapace, dorsal view; 80 female carapace, lateral view; 81 female left chelicera, back view; 82 epigynum, ventral view; 83 cleared epigynum, dorsal view. Scale bars: 75–76, 0.5 mm; 77–83, 0.2 mm. Ilargus pilleolus sp. nov.

Figs 75–83, 142–143

Type material. Holotype: male, ECUADOR: Pichincha : Crater del Pululahua, 0.033° S, 78.500° W, 19 June 1988, coll. W. Maddison, WPM#88–001 (UBC-SEM AR00154, QCAZ). Paratypes: 1 female, same data as holotype (UBC-SEM AR00155); 5 males and 3 females, same data as holotype.

Etymology. Latin adjective pilleolus (little cap), referring to the tuft behind the anterior eye row on the male carapace.

Diagnosis. Differs from other described Ilargus species by the presence of a row of tuft on the male carapace and the leaf-like marking on the abdomen (Figs 75–76). This species is similar in the color pattern to Ilargus serratus , but can be distinguished by the shorter embolus, the smooth margin of the retrolateral tibial apophysis of the male palp (Figs 77–78); and the wider median septum of the epigynal window (Fig. 82).

Description. Male (holotype, UBC-SEM AR00154). Carapace length 1.5 (variation 1.4–1.6, n=6); abdomen length 1.5. Chelicera: yellow brown. Palp (Figs 77–78): reddish brown, tibia and patella dark ventrally. Palpal bulb wide; embolus wide; proximal tegular lobe large; retrolateral sperm duct loop almost occupying half of the bulb width; retrolateral tibial apophysis finger-like; ventral tibial bump absent. Measurements of legs: I 2.3, II 2.2, III 2.4, IV 2.8. Color in alcohol (Fig. 75): carapace red brown, with a row of dense sandy yellow tuft behind the first eye row, eye area yellowish, thoracic area with a narrow yellowish stripe medially; abdomen grayish brown, with many yellowish speckles and a medial yellowish leaf-like marking, posterior end of abdomen with a dark triangular marking; legs yellowish.

Female (paratype, UBC-SEM AR00155). Carapace length 1.5 (variation 1.5–1.6, n=4); abdomen length 2.1. Chelicera (Fig. 81): yellow brown. Measurements of legs: I 2.6, II 2.5, III 2.8, IV 3.1. Epigynum (Fig. 82): window large, median septum wide. Vulva (Fig. 83): copulatory duct swollen at the beginning; spermatheca almost round. Color in alcohol (Fig. 76): similar to that of male, thoracic area of carapace with yellowish lateral margins.

Natural history. Specimens were found beating vegetation.

Figures

FIGURES 71 – 74. Ilargus moronatigus sp. nov. 71 female holotype, dorsal view; 72 female left chelicera, back view; 73 epigynum, ventral view; 74 cleared epigynum, dorsal view. Scale bars: 71, 0.5 mm; 72, 0.2 mm; 73 – 74, 0.1 mm.