Four new species of the Neotropical spider genus Enna (Araneae, Lycosoidea, Trechaleidae) from Brazil
Author
Cruz, Estevam L.
Author
Silva, Da
Author
Lise, Arno A.
text
Zootaxa
2009
2289
48
54
journal article
10.5281/zenodo.275291
1a88150f-f510-49d1-b9a3-6a8c4950511c
1175-5326
275291
Enna trivittata
new species
Figs. 1
,
5–7
Type
material:
Holotype
:
female from São Pedro, Fazenda Santa Maria do Meio, São Paulo,
Brazil
[
22°33’S
,
47°57’W
],
29.V.2001
, R. M. C. Castro (
IBSP
57336).
Etymology.
The specific name is an adjective referring to the three whitish longitudinal stripes on the dorsum of abdomen (
Fig. 1
).
Diagnosis.
The female of
E. trivittata
sp. n.
resembles
E. maya
Silva, Lise & Carico, 2008
(p. 87, fig. 39) by the shape of the epigynal middle field (
Fig. 5
), but can be distinguished by a projected scape (
Fig. 6
) and the presence of well defined accessory spermathecae (
Fig. 7
).
Description.
Female (
Holotype
, IBSP 57336). Total length 9.84. Carapace, 4.38 long, 3.72 wide, light brown (
Fig. 1
). Clypeus dark brown, bristly, 0.31 high. Anterior eye row straight, 1.00 wide; posterior 1.84 wide, recurved. Eye diameters, interdistances, and median ocular quadrangle: AME 0.20, ALE 0.16, PME 0.24, PLE 0.30; AME-AME 0.16, AME-ALE 0.10, PME-PME 0.52, PME-PLE 0.38, OQA 0.58, OQP 1.06, OQH 0.66. Chelicerae red-brownish, bristly; promargin and retromargin of fang furrow with three teeth equidistant and equal in size. Sternum yellowish, bristly, 1.70 long, 1.86 wide. Labium dark brown, 0.65 long, 0.74 wide. Legs light brown with dark brown annuli on femora, relative length: IV-I-II-III, I – femur 4.06/ tibia-patella 5.81/ metatarsus 3.82/ tarsus 1.74/ total 15.43; II – 4.31/ 5.47/ 3.65/ 1.66/ 15.09; III – 3.56/ 4.31/ 3.07/ 1.49/ 12.43; IV – 4.15/ 5.39/ 4.56/ 1.82/ 15.92. Ventral pairs of macrosetae on tibiae:
I-4
;
II-4
;
III-3
;
IV- 3.
Abdomen, 5.32 long, grayish, with scattered setae, dorsum with three whitish longitudinal stripes (
Fig. 1
). Venter whitish. Middle field of epigynum with two small excavations (
Fig. 5
), scape slightly projected (
Fig. 6
); spermathecae rounded at apex with small accessory spermathecae (
Fig. 7
).
Distribution.
Known only from the
type
locality.