Ochyrocera rinocerotos, Dupérré, Nadine, 2015

Dupérré, Nadine, 2015, Descriptions of twelve new species of ochyroceratids (Araneae, Ochyroceratidae) from mainland Ecuador, Zootaxa 3956 (4), pp. 451-475 : 459-461

Ochyrocera rinocerotos new species

Figs 13–17 , map 1.

Type material. Male holotype from Ecuador, Cotopaxi Province: Otonga Biological Reserve, 04–07 September 2014, sifting litter, Berlese extraction, N. Dupérré, E. Tapia and C. Tapia ( QCAZ). Two female paratypes, same data. EXAMINED.

Other material examined. Ecuador: Cotopaxi Province, San Francisco de Las Pampas, Casa César Tapia (00.42415°S 78.95719°W), 1426 m, 5 November 2013, 1♂ 2♀, sifting litter, C. Tapia, C. Tapia ( MECN).

Etymology. The specific epithet is a Latin noun in apposition in reference to the rhinoceros horn-shaped cuspule of the male cymbial apophysis.

Diagnosis. Males and females can be distinguished from all Ochyrocera by their color pattern ( Fig. 15 ). Males can be diagnosed by their unique horn-shaped cymbial cuspule ( Fig. 14 ); females can be diagnosed by their curved spermathecae ( Fig. 17 ).

Description. Male: Total length: 1.0; carapace length: 0.5; carapace width: 0.4.

PROSOMA: Carapace ovoid; narrowing gradually anteriorly; shiny, light yellow with purplish pattern (as in female Fig. 15 ); pars cephalica flat; fovea not visible. Sternum light yellow, slightly suffused with purplish tinge; as long as wide. Endites light yellow suffused with purplish tinge; labium light yellow suffused with purplish tinge; notch. Clypeus sloping; short, diameter of PME. Chelicerae light yellow; promargin with a series of seven teeth attached to the lamina; retromargin without teeth. EYES: Six contiguous eyes surrounded by black pigmentation about equal size (as in female Fig. 15 ); PME elongated oval; ALE rounded; PLE rounded. OPISTHOSOMA: Oval; uniformely green-purplish color; tracheal spiracle half way between epigastric furrow and spinnerets. LEGS: Light yellow; leg formula 4123; total length: I: 2.1; II: 2.0; III: 1.6; IV: 2.4 GENITALIA: Palpal femur long; palpal tibia enlarged basally ( Fig. 14 arrow); with two dorsal trichobothria ( Fig. 13 ). Cymbium with squared extension prolaterally ( Fig. 14 ) and an elongated, curved, apical apophysis bearing horn-shaped cuspule at tip ( Figs 13, 14 ). Bulb oval ( Fig. 13 ). Embolus elongated, flexed at base and projecting forward with basally transparent point and dark spine-like tip; sperm duct slightly narrowing from beginning to the tip of embolus, with one tight loop ( Figs 13, 14 ).

Female: Total length: 1.2; carapace length: 0.6; carapace width: 0.4.

PROSOMA: Carapace ovoid; narrowing gradually anteriorly; shiny, light yellow with purplish pattern; pars cephalica flat; fovea not visible ( Fig. 15 ). Chelicerae, light yellow; promargin with a series of six teeth attached to the lamina; retromargin without denticles. Sternum, endites and labium: as in male. OPISTHOSOMA: Globular; uniformly green-purplish ( Fig. 15 ); tracheal spiracle half way between epigastric furrow and spinnerets. LEGS: same as male; leg formula 4123; total length: I: 2.2; II: 1.8; III: 1.4; IV: 2.4. GENITALIA: Epigynal region swollen with small, curved median sclerotization ( Fig. 16 ). Internal genitalia with elongated, curved spermathecae ( Fig. 17 ).

Distribution. Ecuador: Cotopaxi Province.

Natural history. Collected in a low evergreen montane forest at an altitud of 1300m.

Figures

FIGURES 13 – 17. Ochyrocera rinocerotos sp. n. Male 13 – 14. Female 15 – 17. 13. Palp, retrolateral view. 14. Palp, prolateral view (arrow points to tibial enlargement). 15. Habitus, dorsal view. 16. Epigynal region, ventral view. 17. Internal genitalia, ventral view.