Costarina obtina (Chickering)

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 : 70-71

Costarina obtina (Chickering) ( Figures 439–449 )

Dysderina obtina Chickering, 1968: 21 , figs. 42–45 (male holotype from Volcán , Chiriquí, Panama, in MCZ; examined).

Costarina obtina: Platnick and Dupérré, 2011: 50 .

DIAGNOSIS: Males of this dark-bodied species resemble those of C. espavel (cf. figs. 348– 358) in having a translucent flange on the distal embolar prong, but have a shorter proximal embolar prong (figs. 439–444); females have heavily sclerotized, arched posterior genitalic elements (figs. 448, 449).

MALE (PBI_OON 29756, figs. 439–444): Total length 2.10. Endite ventral process relatively wide; distal process with arched, medially directed extension. Femora: I r0-1-1; II p0-0-1; tibia I v4-4-2; metatarsus I v2-2-2. Embolus proximal prong excavated on distal side; distal prong with translucent, relatively narrow proximal flange (N = 13).

FEMALE (PBI_OON 29756, figs. 445–449): Total length 2.12. Spination typical. Genital atrium almost rectangular, followed posteriorly by medially divided sclerotization (N = 4).

DISTRIBUTION: Southeastern Puntarenas.

Figures

FIGURES 439–449. Costarina obtina (Chickering), male (439–444) and female (445–449). 439. Left palp, prolateral view. 440. Same, ventral view. 441. Same, retrolateral view. 442. Left embolus, prolateral view. 443. Same, ventral view. 444. Same, retrolateral view. 445. Sternum, ventral view. 446. Abdomen, lateral view. 447. Same, ventral view. 448. Digested female genitalia, ventral view. 449. Same, dorsal view.