Paradysderina dracula, 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 : 77-78

Paradysderina dracula , new species Figures 566–579

Type: Male holotype taken at an elevation of 216 m at a site 1 km south of Onkone Gare Camp , 0 ° 39925.770S, 76 ° 27910.80W, Reserva Etnica Waorani, Orellana, Ecuador (Feb. 5, 1995; T. Erwin et al.), deposited in USNM (PBI_OON 608) .

ETYMOLOGY: The specific name is a noun in apposition, referring to the extraordinary cheliceral modifications of males.

DIAGNOSIS: Males can easily be recognized by the long, fanglike anterior projections on the chelicerae (figs. 566, 567); females have a heavily sclerotized base of the anterior genitalic process (figs. 578, 579); both sexes have the distal half of the leg femora, and the proximal half of the leg tibiae, darkened (fig. 573).

MALE (PBI_OON 608, figs. 566–572): Total length 1.92. Elevated portion of pars cephalica granulate. Chilum small, triangular. Dorsal half of paturon anteriorly excavated, excavation terminating in large, anteriorly directed process, process abruptly bent at about half its length, tip directed medially; space between chilum and paturon occupied by small, median, heavily sclerotized spine. Endites with ventral process tiny, almost obsolete, dorsal process hook shaped. Leg spination: femur I p0-0-1, r0-1-1; tibiae: I v4- 4-1p, II v4-3-0; metatarsi: I v2-2-1p, II v2-2-0. Palps symmetrical; embolus wide, massive, highly three-dimensional.

FEMALE (PBI_OON 609, figs. 573–579): Total length 2.02. Postepigastric scutum only around epigastric furrow, not fused to epigastric scutum. Leg spination: femora: I p0-0-2, r0-1-1; tibiae: I v4-4-1p, II v4-4-2; metatarsi I, II v2-2- 1p. Atrium semicircular, most of atrial area occupied by wide base of anterior process.

OTHER MATERIAL EXAMINED: Ecuador: Orellana: Estación Cientifica Yasuni, 0.067111 ° S, 76.4002 ° W, Dec. 1, 2009, leaf litter, elev. 200 m ( Niarchos Exped., AMNH PBI _OON 609), 1♀.

DISTRIBUTION: Lowland Amazonian

Ecuador (Orellana).

Figures

Figs. 566–579. Paradysderina dracula, new species, male (566–572) and female (573–579). 566. Carapace, dorsal view. 567, 574. Same, anterior view. 568. Sternum and mouthparts, ventral view. 569. Left embolus, prolateral view. 570. Left palp, prolateral view. 571. Same, ventral view. 572. Same, retrolateral view. 573. Habitus, dorsal view. 575. Abdomen, ventral view. 576. Same, lateral view. 577, 578. Epigastric region, ventral view. 579. Same, dorsal view.