Enna silvae, 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: 65

publication ID

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

persistent identifier

http://treatment.plazi.org/id/039E87E0-D37C-D149-1CAB-FDA4CDAE32BA

treatment provided by

Plazi

scientific name

Enna silvae
status

new species

Enna silvae  new species

Figs 12, 13View FIGURES 12 – 17

Type. Female holotype from Madre de Dios, 15 km E from Puerto Maldonado, Peru [11 ° 45 ’ 33.54 ”S, 70 ° 48 ’ 52.44 ’W], 17.VII. 1989, D. Silva ( MUSM). Paratypes: two females, same locality and data as holotype ( MUSM, MCTP 8868)

Etymology. The specific name is a matronym in honor of the collector of the types, Diana Silva.

Diagnosis. The females of E. silvae  sp. nov. resembles those of E. hara Silva, Lise & Carico, 2008  by the shape of the middle field of the epigynum (MF) ( Silva et al. 2008, p. 94, fig. 76), but can be distinguished by smooth median area of the middle field of the epigynum (MF) ( Fig. 12View FIGURES 12 – 17) and by the rounded head of spermathecae ( Fig. 13View FIGURES 12 – 17).

Description. Female (Holotype, Madre de Dios, Peru, MUSM). Total length 4.81. Carapace 2.24 long, 2.07 wide, dark brown with a median light brown band. Clypeus dark brown, 0.18 high. Anterior eye row slightly recurved, 0.60 wide; posterior 1.24 wide. Eye diameters, interdistances, and median ocular quadrangle: AME 0.12, ALE 0.08, PME 0.18, PLE 0.20; AME-AME 0.10, AME-ALE 0.02, PME-PME 0.30, PME-PLE 0.16, OQA 0.36, OQP 0.72, OQH 0.44. Chelicerae dark brown, bristly; promargin and retromargin of fang furrow with three teeth equidistant and equal in size. Sternum light brown, with dark brown patches laterally; scattered setae; 0.99 long, 0.91 wide. Labium dark brown, lighter distally, 0.33 long, 0.41 wide. Legs light brown with dark brown annuli on femora, relative length: IV-I-II-III. Leg measurements: I—femur 2.49 / tibia-patella 3.32 / metatarsus 2.40 / tarsus 0.99 / total 9.20; II— 2.24 / 3.40 / 2.24 / 0.91 / 8.79; III— 1.99 / 2.33 / 1.90 / 0.83 / 7.05; IV— 2.40 / 2.98 / 2.90 / 1.03 / 9.31. Ventral pairs of macrosetae on tibiae: I- 4; II- 4; III- 3; IV- 3. Abdomen 2.49 long, dark gray, with several irregular white patches on dorsum. Venter grayish, with scattered setae. Middle field of the epigynum (MF) smooth and not projected ( Fig. 12View FIGURES 12 – 17). Head of spermathecae rounded and with inconspicuous fertilization ducts (FD) ( Fig. 13View FIGURES 12 – 17).

Distribution. Known only from the type locality (Madre de Dios, Peru).

Male. Unknown.

MCTP

Museu de Ciencias

Kingdom

Animalia

Phylum

Arthropoda

Class

Arachnida

Order

Araneae

Family

Trechaleidae

Genus

Enna