Dossenus paraensis new species

Figs. 1, 2

Type material: Holotype: female from Pará, Brazil [06°09’42.49”S, 52°42’10.07’W], XI.1945, C. D. Michener (MCTP 8865).

Etymology. The specific name is a noun in apposition, referring to the type locality.

Diagnosis. The female of D. paraensis sp. n. can be distinguished from those of D. marginatus Simon, 1898 and D. guapore (Silva et al. 2007, pp. 142, 148, figs. 7, 8, 31, 32) by the presence of a short median projection on the scape of the epigynum (Fig. 1). This new species has only four pairs of ventral macrosetae on tibia I and II, differing from D. marginatus and D. guapore, which has five pairs.

Description. Female (Holotype, MCTP 8865). Total length 8.05. Carapace 4.06 long, 3.15 wide, light yellow with a median light brown band surrounded by a white line extending to the abdomen, darker laterally. Clypeus light yellow, 0.26 high. Anterior eye row slightly recurved, 0.80 wide; posterior 1.60 wide. Eye diameters, interdistances, and median ocular quadrangle: AME 0.14, ALE 0.12, PME 0.30, PLE 0.22; AME-AME 0.14, AME-ALE 0.10, PME-PME 0.30, PME-PLE 0.40, OQA 0.40, OQP 0.82, OQH 0.68. Chelicerae light brown, bristly; promargin and retromargin of fang furrow with three teeth equidistant and equal in size. Sternum light yellow with scattered setae; 2.07 long, 1.66 wide. Labium yellow, 0.33 long, 0.48 wide. Legs yellow, relative length: IV-I-II-III, I – femur 4.31/ tibia-patella 5.39/ metatarsus 4.31/ tarsus 2.07/ total 16.08; II – 4.23/ 5.47/ 3.65/ 1.90/ 15.25; III – 3.32/ 3.73/ 2.24/ 1.41/ 10.70; IV – 4.73/ 5.56/ 4.56/ 2.10/ 16.95. Ventral pairs of macrosetae on tibiae: I-4; II-4; III-3; IV-3. Abdomen, 3.98 long, light brown, with dark brown setae on anterior portion; dorsum with a median light brown band. Venter light gray, with scattered setae. Epigynum with prominent scape, presenting a short projection on the anterior margin (Fig. 1). Stalk of spermathecae (SS) elongated and head of spermathecae (HS) elliptical (Fig. 2).

Male. Unknown.

Distribution. Known only from the type locality.