Enna caparao, 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 : 50-53

Enna caparao new species

Figs. 4 , 14–16

Type material: Holotype: female holotype from Alto Caparaó , Parque Nacional do Caparaó , Minas Gerais, Brazil [20° 25’S, 41° 52’W], 01–07.V.2002, Equipe Biota ( IBSP 52750).

Paratypes: BRAZIL: Rio de Janeiro: Teresópolis, Parque Nacional da Serra dos Órgãos [22°27’S, 42°59’W], 1 Ƥ, 18–22.VIII.2001, Equipe Biota ( IBSP 52859); São Paulo: Paranapiacaba, Estação Biológica Alto da Serra [23°46’S, 46º18’W], 1 Ƥ, 13.XII.1996, R. Pinto da Rocha ( MZSP 17641), same locality, 1 Ƥ, 27.X.1951, W. Bokermann ( MZSP 11453).

Etymology. The specific name is a noun in apposition taken from the type locality.

Diagnosis. The female of E. caparao sp. n. can be distinguished from all known species by the two lateral excavations on the epigynal middle field ( Fig. 14 ), the slightly projected scape ( Fig. 15 ) and by the presence of conspicuous accessory spermathecae ( Fig. 16 ).

Description. Female (Holotype, IBSP 52750). Total length 9.31. Carapace, 4.38 long, 3.99 wide, light brown, darker laterally, with two brownish thin median bands ( Fig. 4 ). Clypeus yellowish, darker laterally, 0.30 high. Anterior eye row straight, 1.14 wide; posterior 1.80 wide, recurved. Eye diameters, interdistances, and median ocular quadrangle: AME 0.20, ALE 0.14, PME 0.26, PLE 0.30; AME-AME 0.14, AME-ALE 0.10, PME-PME 0.42, PME-PLE 0.32, OQA 0.58, OQP 0.88, OQH 0.62. Chelicerae red-brownish, bristly; promargin and retromargin of fang furrow with three teeth equidistant and equal in size. Sternum yellowish, bristly; 1.79 long, 2.01 wide. Labium brownish, 0.71 long, 0.77 wide. Legs light brown with dark brown annuli on femora, relative length: IV-I-II-III, I – femur 5.18/ tibia-patella 7.18/ metatarsus 4.65/ tarsus 2.40/ total 19.41; II – 5.32/ 7.04/ 4.78/ 2.26/ 19.40; III – 4.52/ 5.18/ 3.98/ 1.59/ 15.27; IV – 4.93/ 6.38/ 5.58/ 1.99/ 18.88. Ventral pairs of macrosetae on tibiae: I-4; II-4; III-3; IV-3. Abdomen, 4.92 long, yellowish with irregular grayish dots, bristly ( Fig. 4 ). Venter yellowish, with scattered setae. Median field of epigynum with two small lateral excavations ( Fig. 14 ), scape slightly projected ( Fig. 15 ); head of spermathecae rounded at apex ( Fig. 16 ).

Distribution. Brazil (states of Minas Gerais, São Paulo and Rio de Janeiro).

Figures

FIGURES 1 – 4. Enna spp., female habitus, dorsal view. 1. Enna trivittata sp. n. 2. E. segredo sp. n. 3. E. meridionalis sp. n. 4. E. caparao sp. n.

FIGURES 5 – 16. 5 – 7. Enna trivittata sp. n., female epigynum (5 ventral, 6 posterior, 7 dorsal). 8 – 10. E. segredo sp. n., female epigynum (8 ventral, 9 posterior, 10 dorsal). 11 – 13. E. meridionalis sp. n., female epigynum (11 ventral, 12 posterior, 13 dorsal). 14 – 16. E. caparao sp. n., female epigynum (14 ventral, 15 posterior, 16 dorsal). (AS = accessory spermathecae; CD = copulatory duct; FD = fertilization duct; HS = head of spermathecae, MF = middle field of epigynum; S = spermathecae, SC = scape).