Costarina isidro, Platnick & Berniker & Víquez, 2014

Platnick, Norman I., Berniker, Lily & Víquez, Carlos, 2014, The Goblin Spider Genus Costarina (Araneae, Oonopidae), Part 2: the Costa Rican fauna, American Museum Novitates 2014 (3794), pp. 1-76 : 12-13

Costarina isidro , new species ( Figures 254–260 , 567–571 )

TYPES: Male holotype and male paratype from cloud-forest litter taken at an elevation of 1800 m at km 117 on the Inter-American Highway, 19 km north of San Isidro , 9°28′N, 83°42′20″W, San José , Costa Rica (Feb. 15, 1998; R. Anderson), deposited in AMNH (PBI_ OON 49231).

DIAGNOSIS: Males are relatively dark, narrow bodied, and long legged; they resemble those of C. alturas (cf. figs. 472–482) in having a long, narrow, ventrally arched proximal embolar prong but have a wider tip on the almost rectangular distal embolar prong (figs. 255–260). A single female from Monteverde in northern Puntarenas is not as dark as the male, but is here tentatively assigned to the species on the basis of the similarities of both sexes to those of C. alturas ; this female is easily recognized by the fully fused ventral scuta and greatly enlarged posterior genitalic elements (figs. 568–571).

MALE (PBI_OON 49231, figs. 254–260): Total length 2.22. Endite ventral process relatively wide, darkened distally; dorsal process relatively long, narrow. Femora: I r0-1-0; II p0-0-2. Embolus distal prong almost rectangular, distally notched; proximal prong long, narrow, sinuous (N = 2).

FEMALE: (PBI_OON 51309, figs. 567–571): Total length 2.58. Spination typical. Genital atrium short, wide, recurved; posterior genitalic elements hypertrophied, longer than apodemes (N = 1).

DISTRIBUTION: Northern Puntarenas and San José.

Figures

FIGURES 254–267. 254–260. Costarina isidro, new species, male. 261–267. C. leones, new species, male. 254, 261. Sternum, ventral view. 255, 262. Left palp, prolateral view. 256, 263. Same, ventral view. 257, 264. Same, retrolateral view. 258, 265. Left embolus, prolateral view. 259, 266. Same, ventral view. 260, 267. Same, retrolateral view.

FIGURES 560–571. 560–566. Costarina parapalmar, new species, male. 567–571. C. isidro, new species, female. 560. Sternum, ventral view. 561. Left palp, prolateral view. 562. Same, ventral view. 563. Same, retrolateral view. 564. Left embolus, prolateral view. 565. Same, ventral view. 566. Same, retrolateral view. 567. Sternum, ventral view. 568. Abdomen, lateral view. 569. Same, ventral view. 570. Digested female genitalia, ventral view. 571. Same, dorsal view.