Paradysderina silvae, Platnick & Dupérré, 2011

Platnick, Norman I. & Dupérré, Nadine, 2011, The Andean Goblin Spiders Of The New Genera Paradysderina And Semidysderina (Araneae, Oonopidae), Bulletin of the American Museum of Natural History 2011 (364), pp. 1-121 : 23

Paradysderina silvae , new species Figures 106–118

TYPE: Male holotype taken from the canopy at an elevation of 2665 m at Paucartambo , Wayquecha, 13 ° 11925.410S, 71 ° 35918.570W, Cusco, Peru (Sept. 30, 2008; D. Silva), deposited in MUSM (501023, PBI_OON 544) .

ETYMOLOGY: The specific name is a patronym in honor of the collector of the holotype, Diana Silva (MUSM).

DIAGNOSIS: The two sexes have not been collected together, and may be mismatched. Males can be recognized by the anterior prong on the chelicerae (figs. 107, 108) and the long, recurved ventral flange of the embolus (figs. 109–112), females by the Tshaped anterior portion of the anterior genitalic process (figs. 116–118).

MALE (PBI_OON 544, figs. 106–112): Total length 1.95. Elevated portion of pars cephalica appears reticulate. Chilum relatively wide, triangular. Paturon with sharp, anterior prong, directed medially. Endites anteriorly with two wide processes, ventral one with laterally directed projection, dorsal one with medially directed projection. Leg spination: femora: I p0-0-2, II p0-0-1; tibiae: I v4-4-2, II v3-3-1p; metatarsi: I v2-2- 1p, II v2-2-0. Palps symmetrical; embolus with ventral flange elongated, recurved, extending past tip of bulb, dorsal flange flattened.

FEMALE (PBI_OON 10879, figs. 113– 118): Total length 2.31. Postepigastric scutum only around epigastric furrow, fused to epigastric scutum. Leg spination: femora: I p0-0-2, II p0-0-1; tibiae: I v4-4-2, II v4-4-1p; metatarsi: I v2-2-2, II v2-2- 1p. Posterior margin of atrium rebordered except at midline; dark, wide, T-shaped sclerotization visible through cuticle in front of anterior atrial ridge; atrium with anterolaterally directed, internal protrusions.

OTHER MATERIAL EXAMINED: Peru: Cusco: Ccasapata, 0.6 mi NW Pacaypata, La Convención, 13 ° 23.989S, 73 ° 9.879W, May 8, 1998, Winkler , cloud forest leaf litter, elev. 7860 ft (P. Parillo, FMNH 61006 , PBI_OON 10879), 1♀, May 8–14, 1998, baited pitfall, cloud forest, elev. 7860 ft (P. Parillo, FMNH 61005 , PBI_OON 10878), 1♀ ; Pillahuata, Manu Road , km 128, Sept. 26, 1982, litter along stream (L. Watrous, G. Mazurek, FMNH PBI_OON 38398), 18, same, vine litter (L. Watrous, G. Mazurek, FMNH 33558 , PBI_OON 10065), 18 .

DISTRIBUTION: Peru (Cusco).

Figures

Figs. 106–118. Paradysderina silvae, new species, male (106–112) and female (113–118). 106, Carapace, dorsal view. 107, 113. Same, anterior view. 108. Sternum and mouthparts, ventral view. 109. Left embolus, ventral view. 110. Left palp, prolateral view. 111. Same, ventral view. 112. Same, retrolateral view. 114. Abdomen, lateral view. 115. Same, ventral view. 116, 117. Epigastric region, ventral view. 118. Same, dorsal view.