Ochyrocera zabaleta, Dupérré, Nadine, 2015

Dupérré, Nadine, 2015, Descriptions of twelve new species of ochyroceratids (Araneae, Ochyroceratidae) from mainland Ecuador, Zootaxa 3956 (4), pp. 451-475 : 467-469

Ochyrocera zabaleta new species

Figs 36–41 , map 1.

Type material. Male holotype from Ecuador, Santo Domingo de Las Tsáchilas Province, San José de Alluriquín, La Florida, Rio Zabaleta (00.25254°S 79.03043°W), 884m, 28 October 2014, hand collected, E. Tapia ( QCAZ). EXAMINED. Female paratype, same data. EXAMINED.

Other material examined. Ecuador: Santo Domingo de Las Tsáchilas Province: San José de Alluriquín, La Florida, Rio Zabaleta (00.25254°S 79.03043°W), 884m, 2♂ 2♀, 28 October 2014, hand collected, E. Tapia ( MECN); 2♀, 28 October 2014, hand collected, E. Tapia (DTC).

Etymology. The specific epithet is a noun in apposition taken from the type locality, Rio Zabaleta , Ecuador.

Diagnosis. Males are distinguished from all Ochyrocera by the forked tip of the embolus ( Fig. 38 ); females are diagnosed by epigynal region with sclerotized triangular projection ( Fig. 40 ).

Description. Male: Total length: 2.2; carapace length: 0.7; carapace width: 0.5.

PROSOMA: Carapace pyriform, narrowing abruptly anteriorly; shiny, whitish with purple median band with dark markings; pars cephalica slightly elevated ( Fig. 36 ). Sternum whitish, suffused with purple heart-shaped mark; as long as wide; with extremely long setae. Endites whitish; labium whitish, suffused with purple; notch. Clypeus sloping with purple band medially; high (4x PME). Chelicerae whitish; apically with purplish tinge; promargin one large tooth apically, followed by a series of seven teeth attached to the lamina; retromargin without denticles. EYES: Six eyes surrounded by black pigmentation about equal size; PME rounded, contiguous; PME- ALE slightly separated; ALE rounded contiguous with PLE; PLE rounded ( Fig. 36 ). OPISTHOSOMA: Cylindrical; dark purple with pale median band and triangular mark apically ( Fig. 36 ); tracheal spiracle half way between epigastric furrow and spinnerets. LEGS: purplish; femurs with white band apical one third and apically, tibiae with white band basally and apical one third, metatarsi and tarsi with white band apically; metatarsi and tarsi with faint white rings pigmentation appearing as pseudosegmentation; leg formula 1423; legs total length: I: 10.7; II: 6.5; III 4.9; IV: 7.1. GENITALIA: Palpal femur long, tip with purple mark ( Fig. 38 ); palpal patella purple; palpal tibia not narrow basally; with one dorsal, one retrolateral trichobothria ( Figs 37, 38 ). Cymbium elongated with squared extension prolaterally ( Fig. 38 ); apical apophysis elongated bearing cuspule at its apical end ( Fig. 37 ). Bulb oval ( Fig. 38 ). Embolus elongated, projecting forward, widest medially, with forked tip ( Figs 37, 38 ); sperm duct narrowing 1/2 from beginning to the tip of embolus with one loose loop ( Figs 37, 38 ).

Female: Total length: 1.4; carapace length: 0.6; carapace width: 0.4. PROSOMA: Carapace as in male; pars cephalica slightly less elevated. Sternum, endites, labium and clypeus as in male. Chelicerae whitish; apically with purplish tinge; promargin one large tooth apically, followed by a series of six teeth attached to the lamina; retromargin without denticles. EYES: As in male. OPISTHOSOMA: Oval; whitish with dark purple markings ( Fig. 39 ); tracheal spiracle half way between epigastric furrow and spinnerets. LEGS: As in male; leg formula 1423; legs total length: I: 7.8; II: 5.2; III: 3.4; IV: 5.3; palpal patella, distal half of tibia and tip of tarsus purple. GENITALIA: Epigynal area strongly swollen, with two dark marks medially and an apical triangular scletorized projection ( Fig. 40 ). Internal genitalia with two dark, convoluted spermathecae and a large membranous middle section ( Fig. 41 ).

Distribution. Ecuador: Santo Domingo de Las Tsáchilas Province.

Natural history. Collected in a foothill forest at an altitude of 884m.

Figures

FIGURES 36 – 38. Ochyrocera zabaleta sp. n. Male 36 – 38. 36. Habitus, dorsal view. 37. Palp, retrolateral view. 38. Palp, prolateral view.

FIGURES 39 – 41. Ochyrocera zabaleta sp. n. Female 39 – 41. 39. Abdomen, dorsal view. 40. Epigynal region, ventral view. 41. Internal genitalia, ventral view.