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

publication ID

http://doi.org/ 10.5281/zenodo.206513

persistent identifier

http://treatment.plazi.org/id/039E87E0-D37A-D148-1CAB-FAB7CD88363B

treatment provided by

Plazi

scientific name

Enna triste
status

new species

Enna triste  new species

Figs 3, 4View FIGURES 1 – 8

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. 3View FIGURES 1 – 8) and by the slender, acute ectal division (ECD) of the retrolateral tibial apophysis (RTA) ( Fig. 4View FIGURES 1 – 8).

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. 3View FIGURES 1 – 8). Retrolateral tibial apophysis with a prominent and slender ectal division (ECD) ( Fig. 4View FIGURES 1 – 8).

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

AMNH

American Museum of Natural History

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Trechaleidae

Genus

Enna