Paradysderina pecki, 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 : 78-82

Paradysderina pecki , new species Figures 580–592

TYPE: Male holotype from Berlese sample of forest litter taken at an elevation of 250 m at Limoncocha, Sucumbíos, Ecuador (June 25, 1976; S. Peck), deposited in FMNH (PBI_OON 37838) .

ETYMOLOGY: The specific name is a patronym in honor of Stewart Peck, collector of the type.

DIAGNOSIS: Males have a long embolus that originates on the posterior half of the palpal bulb (figs. 584–586) and appear to have a dorsal spine and more ventrally situated median ledges on the chelicerae (fig. 581); females have a distinctive V-shaped sclerotization along the posterior margin of the genital atrium (figs. 591, 592).

MALE (PBI_OON 37838, figs. 580–586): Total length 1.43. Elevated portion of pars cephalica granulate. Chilum triangular. Anterior ledge on paturon rounded, inner surface with small dorsal and large ventral, medially directed spines. Endites with ventral process wider, longer than dorsal process. Leg spination: femur I p0-0-1; tibiae: I v4-4-0, II v4-2-0; metatarsi: I v2-2-1p, II v2-2-0. Palps symmetrical; embolus long, originating on posterior half of palpal bulb, distally sinuous.

FEMALE (PBI_OON 10210, figs. 587– 592): Total length 1.61. Postepigastric scutum only around epigastric furrow, fused to epigastric scutum, seam present between lateral edge of posterior spiracle and lateral margin of postepigastric scutum. Leg spination: femur I p0-0-2, r0-1-0; tibiae: I v4-4-0, II v4-4-1p; metatarsi I, II v2-2- 1p. Posterior margin of genitalic atrium with triangular sclerotization along midline; anterior margin with rectangular sclerotization.

OTHER MATERIAL EXAMINED: Ecuador: Sucumbíos: Limoncocha, June 21, 1976, Berlese, Bactris spiny palm, elev. 250 m (S. Peck, FMNH PBI_OON 10567), 1♀, June 25, 1976, Berlese, sifted African palm nuts on ground (S., J. Peck, FMNH 33708, PBI_OON 10210), 1♀.

DISTRIBUTION: Northern Ecuador (Sucumbíos).

Figures

Figs. 580–592. Paradysderina pecki, new species, male (580–586) and female (587–592). 580. Carapace, dorsal view. 581, 587. Same, anterior view. 582. Sternum and mouthparts, ventral view. 583. Mouthparts, posterior view. 584. Left palp, prolateral view. 585. Same, ventral view. 586. Same, retrolateral view. 588. Abdomen, lateral view. 589. Same, ventral view. 590, 591. Epigastric region, ventral view. 592. Same, dorsal view.