Enna venezuelana, 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 : 64-65

Enna venezuelana new species

Figs 7, 8

Type. Female holotype from Tach, 20 km from San Cristo, Venezuela [10°30’00.22”N, 66°55’00.13’W], 20– 22.V.1974, S. Peck ( MCZ).

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

Diagnosis. The females of E. venezuelana sp. nov. resembles those of E. baeza Silva, Lise & Carico, 2008 by the general shape of the middle field (MF) of the epigynum ( Silva et al. 2008, p. 93, fig. 79), but can be distinguished by the presence of conspicuous lateral lobes (LL) ( Fig. 7 ) and by the absence of distal projections on the head of spermathecae ( Fig. 8 ).

Description. Female (Holotype, Tach, Venezuela, MCZ). Total length 9.51. Carapace, 4.15 long, 3.56 wide, light brown, darker laterally; fovea with dark mark. Clypeus light brown with small dark bristles anteriorly, 0.36 high. Anterior eye row straight, 0.98 wide; posterior 1.78 wide. Eye diameters, interdistances, and median ocular quadrangle: AME 0.20, ALE 0.16, PME 0.26, PLE 0.28; AME-AME 0.12, AME-ALE 0.10, PME-PME 0.44, PME-PLE 0.34, OQA 0.46, OQP 0.96, OQH 0.62. Chelicerae reddish-brown, bristly; promargin and retromargin of fang furrow with three teeth equidistant and equal in size. Sternum yellow, scattered setae; 1.90 long, 1.99 wide. Labium dark brown, light distally, 0.58 long, 0.74 wide. Legs light brown with dark brown spots on femora, relative length: IV-I-II-III. Leg measurements: I—femur 5.58/ tibia-patella 7.98/ metatarsus 5.98/ tarsus 2.52/ total 22.06; II—6.11/ 5.98/ 5.85/ 2.26/ 20.20; III—5.32/ 5.95/ 4.78/ 1.72/ 17.77; IV—5.98/ 7.71/ 6.65/ 2.22/ 22.56. Ventral pairs of macrosetae on tibiae: I-4; II-4; III-3; IV-3. Abdomen 5.22 long, dark brown with two pairs of sigilla. Venter grayish, unmarked. Middle field of the epigynum (MF) with a small, short scape-like projection ( Fig. 7 ). Head of spermathecae rounded and with conspicuous fertilization ducts (FD) ( Fig. 8 ).

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

Male. 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).