Enna trivittata, Cruz, Estevam L., Silva, Da & Lise, Arno A., 2009

Cruz, Estevam L., Silva, Da & Lise, Arno A., 2009, Four new species of the Neotropical spider genus Enna (Araneae, Lycosoidea, Trechaleidae) from Brazil, Zootaxa 2289, pp. 48-54: 49

publication ID

http://doi.org/ 10.5281/zenodo.275291

persistent identifier

http://treatment.plazi.org/id/41735161-FFD0-6411-FF07-87BFE370FA94

treatment provided by

Plazi

scientific name

Enna trivittata
status

new species

Enna trivittata  new species

Figs. 1View FIGURES 1 – 4, 5– 7View FIGURES 5 – 16. 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. 1View FIGURES 1 – 4).

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. 5View FIGURES 5 – 16. 5 – 7), but can be distinguished by a projected scape ( Fig. 6View FIGURES 5 – 16. 5 – 7) and the presence of well defined accessory spermathecae ( Fig. 7View FIGURES 5 – 16. 5 – 7).

Description. Female (Holotype, IBSP 57336). Total length 9.84. Carapace, 4.38 long, 3.72 wide, light brown ( Fig. 1View FIGURES 1 – 4). 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. 1View FIGURES 1 – 4). Venter whitish. Middle field of epigynum with two small excavations ( Fig. 5View FIGURES 5 – 16. 5 – 7), scape slightly projected ( Fig. 6View FIGURES 5 – 16. 5 – 7); spermathecae rounded at apex with small accessory spermathecae ( Fig. 7View FIGURES 5 – 16. 5 – 7).

Distribution. Known only from the type locality.

IBSP

Instituto Biologico de Sao Paulo

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Trechaleidae

Genus

Enna