Enna carinata, Cruz, Estevam L., Silva, Da & Lise, Arno A., 2011

Cruz, Estevam L., Silva, Da & Lise, Arno A., 2011, Seven new species of Enna (Araneae: Trechaleidae) from Central and South America, Zootaxa 2919, pp. 60-68 : 61-63

Enna carinata new species

Figs 1, 2

Type. Male holotype from Colon Province, Santa Rosa, Panama [09°02’00.38”N, 80°10’03.10’W], XI.1945, C. D. Michener ( AMNH).

Etymology. The specific name is an adjective referring to the marked and conspicuous lateral carina on the male chelicerae.

Diagnosis. The male of E. carinata sp. nov. resembles those of E. igarape Silva, Lise & Carico, 2008 by the presence of the ventral division of the median apophysis (VD) ( Silva et al. 2008, p. 96, figs 100, 101), but can be distinguished by the shorter and wider ectal division (ECD) of the retrolateral tibial apophysis (RTA) ( Fig. 2 ).

Description. Male (Holotype, Colon Province, Santa Rosa, Panama, AMNH). Total length 6.47. Carapace 3.65 long, 2.82 wide, light brown, darker laterally. Clypeus light brown, 0.26 high. Anterior eye row straight, 0.66 wide; posterior 1.40 wide. Eye diameters, interdistances, and median ocular quadrangle: AME 0.12, ALE 0.06, PME 0.16, PLE 0.20; AME-AME 0.22, AME-ALE 0.24, PME-PME 0.60, PME-PLE 0.08, OQA 0.46, OQP 0.90, OQH 0.48. Chelicerae light brown, glabrous, with marked and conspicuous lateral carina; promargin and retromargin of fang furrow with three teeth equidistant and equal in size. Sternum yellowish with scattered setae; 1.66 long, 1.49 wide. Labium yellowish, 0.49 long, 0.58 wide. Legs light brown, relative length: II-IV-III. Leg measurements: I—femur 4.15 (only left femur of leg I present); II—femur 4.31/ tibia-patella 5.56/ metatarsus 3.73/ tarsus 1.66/ total 15.26; III—3.15/ 4.15/ 2.98/ 1.24/ 11.52; IV—4.12/ 4.98/ 4.15/ 1.74/ 14.99. Ventral pairs of macrosetae on tibiae: I-4; II-4; III-3; IV-3. Abdomen 2.57 long, grayish, with several irregular white patches on dorsum. Venter grayish, with scattered setae. Palpus with enlarged dorsal division of the median apophysis (DD, Fig. 1 ). Retrolateral tibial apophysis with a short and wide ectal division (ECD, Fig. 2 ).

Distribution. Known only from the type locality (Colon Province, Santa Rosa, Panama). Female. Unknown.

Figures

FIGURES 1 – 8. Enna carinata sp. nov. 1, 2. male palpus (1 ventral, 2 retrolateral). Enna triste sp. nov. 3, 4. male palpus (3 ventral, 4 retrolateral). Enna caricoi sp. nov. 5, 6. male palpus (5 ventral, 6 retrolateral). Enna venezuelana sp. nov. 7, 8. female epigynum (7 ventral, 8 dorsal). (DD, dorsal division of the median apophysis; ECD, ectal division of the retrolateral tibial apophysis; FD, fertilizations ducts; HS, head of spermathecae; LL, lateral lobe; LLA, lateral lamella; MF, middle field of epigynum; ST, subtegulum; T, tegulum; VD, ventral division of the median apophysis).