Costarina plena, : Platnick and Duperre, 2011

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

Costarina plena (O. P.-Cambridge) ( Figures 1–11 )

Dysderina plena O. P.-Cambridge, 1894: 143, pl. 17, figs. 7, 7a–d.

Costarina plena: Platnick and Dupérré, 2011: 50 ; 2012: 12 , figs. 1–75.

DIAGNOSIS: T his widespread species has two close relatives in northern Costa Rica; members of C. plena differ from those of C. paraplena (cf. figs. 12–22) in having shorter, weaker, more widely separated longitudinal extensions of the lateral arms of the posterior sternal ridge (fig. 7) and from those of C. superplena (cf. figs. 23–33) in color, being orange-brown and without darkened leg segments. Males of C. plena typically retain a slight spinneret scutum, and have a shorter, stubbier proximal embolar prong (figs. 1–6). Females of C. plena can easily be separated from those of the other two species by their much longer genital atrium (figs. 10, 11).

MALE (figs. 1–6): See Platnick and Dupérré, 2012: 12 (N = 41).

FEMALE (figs. 7–11): See Platnick and Dupérré, 2012: 12 (N = 41).

DISTRIBUTION: Widespread and abundant in Costa Rica (and also further north, to southern Mexico).

Figures

FIGURES 1–11. Costarina plena (O. P.-Cambridge), male (1–6) and female (7–11). 1. Left palp, prolateral view. 2. Same, ventral view. 3. Same, retrolateral view. 4. Left embolus, prolateral view. 5. Same, ventral view. 6. Same, retrolateral view. 7. Sternum, ventral view. 8. Abdomen, lateral view. 9. Same, ventral view. 10. Digested female genitalia, ventral view. 11. Same, dorsal view.