Costarina superplena, 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 : 4-5

Costarina superplena , new species ( Figures 23–33 )

TYPE: Male holotype taken in humus at an elevation of 450–550 m at a site 10 km southeast of La Virgen, 10°20′N, 84°05′W, Heredia, Costa Rica (Mar. 17, 2003; R. Anderson), deposited in INBIO (PBI_OON 29750) .

ETYMOLOGY: T he specific name refers to the similarities between this species and C. plena .

DIAGNOSIS: Specimens of this species can easily be distinguished from those of the similar species C. plena (cf. figs. 1–11) and C. paraplena (cf. figs. 12–22) by their relatively dark coloration; the carapace and abdomen are dark brown rather than orange-brown and the leg femora are distinctly darker than the coxae; the abdomen is narrower than in most other species. Males lack a spinneret scutum and have a thicker, straighter proximal embolar prong (figs. 23–28); females have a wide, short genital atrium, and short, strong apodemes (figs. 32, 33).

MALE (PBI_OON 29750, figs. 23–28): Total length 1.85. Endite ventral and dorsal processes both small, triangular, widely separated. Femur I r0-0-0; tibiae I, II v4-4-0; metatarsus II v2-2-0. Embolus distal prong distally arched, thickened; proximal prong basally enlarged, with straight distal margin (N = 3).

FEMALE (PBI_OON 51223, figs. 29–33): Total length 2.02. Femur II r1-1-0; tibia I v4-4-1p; metatarsus I v2-2- 1p. Genital atrium very wide, short, with gently arched anterior margin (N = 1).

DISTRIBUTION: Alajuela and Heredia.

Figures

FIGURES 23–33. Costarina superplena, new species, male (23–28) and female (29–33). 23. Left palp, prolateral view. 24. Same, ventral view. 25. Same, retrolateral view. 26. Left embolus, prolateral view. 27. Same, ventral view. 28. Same, retrolateral view. 29. Sternum, ventral view. 30. Abdomen, lateral view. 31. Same, ventral view. 32. Digested female genitalia, ventral view. 33. Same, dorsal view.