Enna triste, 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 : 63-64

Enna triste new species

Figs 3, 4

Type. Male holotype from Golfo Triste , Venezuela [10°00’21.65”N, 66°55’49.44’W], 06.IX.1942, W. M. Beeber ( AMNH).

Etymology. The specific name is a noun and refers to the type locality.

Diagnosis. The male of E. triste sp. nov. resembles those of E. huanuco Silva, Lise & Carico 2008 by the general shape of the dorsal division (DD) of the median apophysis ( Silva et al. 2008, p. 91, fig. 73), but can be distinguished by the larger lateral lamella (LLA) on the dorsal division of the median apophysis ( Fig. 3 ) and by the slender, acute ectal division (ECD) of the retrolateral tibial apophysis (RTA) ( Fig. 4 ).

Description. Male (Holotype, Golfo Triste , Venezuela, AMNH). Total length 6.22. Carapace 4.15 long, 3.48 wide, dark brown. Clypeus dark brown, 0.28 high. Anterior eye row straight, 0.94 wide; posterior 1.70 wide. Eye diameters, interdistances, and median ocular quadrangle: AME 0.18, ALE 0.14, PME 0.22, PLE 0.26; AME-AME 0.12, AME-ALE 0.07, PME-PME 0.40, PME-PLE 0.34, OQA 0.50, OQP 0.90, OQH 0.64. Chelicerae dark brown, swollen distally, glabrous, with lateral carina; promargin and retromargin of fang furrow with three teeth equidistant and equal in size. Sternum light brown, darker laterally, scattered setae; 1.49 long, 1.99 wide. Labium dark brown, light brown distally, 0.41 long, 0.66 wide. Legs dark brown, unmarked, relative length: II-IV-III. Leg measurements: I—femur 6.22/ tibia-patella 7.71/ metatarsus 6.30/ tarsus 2.98/ total 23.21; II—6.25/ 8.72/ 7.55/ 2.57/ 25.09; III—5.06/ 6.22/ 5.56/ 1.85/ 18.69. Ventral pairs of macrosetae on tibiae: I-4; II-4; III-3. Abdomen 2.90 long, grayish, with irregular white patches on dorsum; three pairs of sigilla. Venter light gray, unmarked. Palpus with enlarged lateral lamella (LLA) on the dorsal division of the median apophysis ( Fig. 3 ). Retrolateral tibial apophysis with a prominent and slender ectal division (ECD) ( Fig. 4 ).

Distribution. Known only from the type locality (Golfo Triste , Venezuela). 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).