Enna osaensis, Cruz, Estevam L., Silva, Da, Viquez, Carlos & Lise, Arno A., 2012

Cruz, Estevam L., Silva, Da, Viquez, Carlos & Lise, Arno A., 2012, On the Neotropical spider genera Enna O. Pickard-Cambridge, 1897 and Syntrechalea F. O. Pickard-Cambridge, 1902 (Araneae, Lycosoidea, Trechaleidae): descriptions, taxonomic notes and new records, Zootaxa 3334, pp. 55-62 : 58-59

Enna osaensis new species

Figs 5, 6

Type material: Holotype: female from Peninsula de Osa, Rio Agujas, Quebrada Salitre [09°45”N, 83°45’W] Puntarenas, Costa Rica, 14.II.1998, M. Lobo, ( INBio).

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

Diagnosis. The female of E. osaensis sp. nov. ( Fig. 5 ) resembles those of E. rothi Silva, Lise & Carico 2008 by the shape of the median field and anterior margin of the epigynum apophysis (Silva et al. 2008, p. 87, fig. 48), but can be distinguished by the presence of large accessory spermathecae ( AS) and by the rounded head of spermathecae (HS) without distal projections ( Fig. 6 ).

Description. Female (Holotype, INBio). Total length 11.97. Carapace 7.05 long and 5.05 wide, dark brown with a median light brown band. Clypeus light brown, 0.46 high. Anterior eye row straight, 1.24 wide; posterior 2.32 wide. Eye diameters, interdistances, and median ocular quadrangle: AME 0.22, ALE 0.16, PME 0.26, PLE 0.15; AME-AME 0.22, AME-ALE 0.14, PME-PME 0.66, PME-PLE 0.50, OQA 0.56, OQP 1.22, OQH 0.68. Chelicerae dark brown, bristly; promargin and retromargin of fang furrow with three teeth equidistant and equal in size.

Sternum light brown, bristly; 2.66 long, 2.79 wide. Labium light brown, slightly lighter anteriorly, 0.79 long, 1.19 wide. Legs dark brown, unmarked, relative length: IV-I-I-III, I – femur 5.98/ tibia-patella 8.91/ metatarsus 5.71/ tarsus 2.26/ total 22.86; II – 5.88/ 9.04/ 5.45/ 2.12/ 22.49; III – 5.17/ 6.91/ 4.65/ 1.72/ 18.45; IV – 6.11/ 7.98/ 6.65/ 2.66/ 23.40. Ventral pairs of macrosetae on tibiae: I-4; II-4; III-3; IV-3. Abdomen, 7.71 long, dorsum dark gray with three light brown median bands; bristly, with three pairs of sigilla. Venter light gray, with scattered setae. Epigynum with two lateral rounded projections on the middle field of epigynum ( Fig. 5 ). Head of spermathecae rounded with conspicuous and large accessory spermathecae ( Fig. 6 ).

Male. Unknown.

Distribution. Known only from the type locality in Costa Rica.

Figures

FIGURES 1 – 6. 1, 2. Enna chickeringi Silva, Lise & Carico, 2008. Male palpus (1 ventral, 2 retrolateral). 3, 4 Enna moyobamba sp. nov. Female epigynum (3 ventral, 4 dorsal). 5, 6. Enna osaensis sp. nov. Female epigynum (5 ventral, 6 dorsal). (AS = accessory spermathecae, D = duct, DD = dorsal division of median apophysis, ECD = ectal division of the retrolateral tibial apophysis, END = ental division of the retrolateral tibial apophysis, HS = head of spermathecae, ST = subtegulum, T = tegulum).