Paradysderina loreto, 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 : 55

Paradysderina loreto , new species Figures 378–385 , 399–406

TYPE: Female holotype from Río Samiria, ca. 05 ° 079S, 75 ° 289W, Loreto, Peru (May– June 1990; T. Erwin, D. Silva), deposited in MUSM (PBI_OON 549) .

ETYMOLOGY: The specific name is a noun in apposition taken from the type locality.

DIAGNOSIS: Both sexes can easily be recognized by their sternum, which is strongly granulated and more deeply incised than that of any of their congeners (figs. 379, 402). Males resemble those of P. pithecia but have a larger embolar tip (figs. 403–406); females resemble those of P. convencion but have an anteriorly much less expanded and much less heavily sclerotized anterior genitalic process (figs. 383–385).

MALE (PBI_OON 736, figs. 399–406): Total length 2.11. Elevated portion of pars cephalica granulate. Chilum rounded, triangular. Anterior ledge of paturon with pointed tubercle at inner margin, inner margins with small, dorsally directed spine. Endites with ventral process much wider than dorsal process. Leg spination: femora: I p0-0-2, r0- 1-1, II p0-0-2, r0-1-0; tibiae: I v4-4-2, II v4-4- 1p; metatarsi: I v2-2-2, II v2-2- 1p. Palps symmetrical, embolus sharply bent, with conspicuous prolateral notch, tip large, triangular.

FEMALE (PBI_OON 549, figs. 378–385): Total length 2.27. Postepigastric scutum covering about one-third of abdomen length, fused to epigastric scutum. Leg spination: femora I, II p0-0-2; r0-1-1; tibiae I, II v4-4-2; metatarsi: I v2-2-2, II v2-2- 1p. Atrium semicircular, narrow anterior process originating from small median sclerotization at posterior margin of atrium.

OTHER MATERIAL EXAMINED: Brazil: Amazonas: Igarapé Belém, near Rio Solimões,

about 70 km E Leticia [Colombia], May 18–28, 1970 (B. Malkin, FMNH 56890, PBI_OON 10833), 1♀. Peru: Loreto: Pithecia, 05 ° 119S, 72 ° 429W, May 13–30, 1990, fogging (T. Erwin, D. Silva, MUSM PBI_OON 736), 18.

DISTRIBUTION: Peru (Loreto) and adjacent Brazil.

Figures

Figs. 378–385. Paradysderina loreto, new species, female. 378. Carapace, dorsal view. 379. Sternum and mouthparts, ventral view. 380. Abdomen, ventral view. 381. Carapace, anterior view. 382. Abdomen, lateral view. 383, 384. Epigastric region, ventral view. 385. Same, dorsal view.

Figs. 399–406. Paradysderina loreto, new species, male. 399. Carapace, dorsal view. 400. Same, anterior view. 401. Chelicerae and endites, lateral view. 402. Sternum, ventral view. 403. Left embolus, retrolateral view. 404. Left palp, prolateral view. 405. Same, ventral view. 406. Same, retrolateral view.