Costarina maritza, 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 : 5

Costarina maritza , new species ( Figures 34–44 )

TYPE: Male holotype from wet montane forest litter taken at an elevation of 875 m in the Estación Biológica Maritza, Guanacaste, Costa Rica (Feb. 13, 1996; R. Anderson), deposited in AMNH (PBI_OON 21119) .

DIAGNOSIS: Males have the proximal embolar prong distinctively bifid, with a long prolaterally directed portion and a shorter apically directed portion (figs. 34–39); females have fully fused ventral scuta and a slightly angular anterior margin on the genital atrium (figs. 41–44). T he palp resembles that of C. blanco Platnick and Dupérré from Nicaragua, but the proximal and distal embolar prongs are more widely separated than in that species (cf. Platnick and Dupérré, 2012: figs. 451–455). Members of this species have been found in Berlese samples together with representatives of both C. plena (cf. figs. 1–11) and C. upala (cf. figs. 100–110), but can easily be differentiated by having the surfaces of the sternum between the transverse ridges roughened (fig. 40) rather than smooth.

MALE (PBI_OON 49949, figs. 34–39): Total length 2.02. Endite ventral process long, distally narrow; dorsal process shorter. Femur II r0-1-0; tibia II v4-4-0; metatarsi: I v2-2-2; II v2-2-0. Embolus distal prong very narrow; proximal prong bifid, with long prolaterally directed portion and shorter apically directed portion (N = 53).

FEMALE (PBI_OON 49949, figs. 40–44): Total length 2.34. Spination typical. Genital atrium large, ovoid, completely surrounded by sclerotized cuticle (N = 42).

DISTRIBUTION: Widespread and abundant in the northern half of Costa Rica (Guanacaste, Alajuela, Heredia, Cartago, Limón, and northern Puntarenas) .

Figures

FIGURES 34–44. Costarina maritza, new species, male (34–39) and female (40–44). 34. Left palp, prolateral view. 35. Same, ventral view. 36. Same, retrolateral view. 37. Left embolus, prolateral view. 38. Same, ventral view. 39. Same, retrolateral view. 40. Sternum, ventral view. 41. Abdomen, lateral view. 42. Same, ventral view. 43. Digested female genitalia, ventral view. 44. Same, dorsal view.