Thaumasia diasi, Cruz Da Silva & Carico, 2012

Cruz Da Silva, Estevam L. & Carico, James E., 2012, 3567, Zootaxa 3567, pp. 1-64 : 22

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Thaumasia diasi

new species

Thaumasia diasi new species

Figs 1, 19, 115–118

Type. Male holotype from Mata do Buraquinho, João Pessoa , Paraíba, Brazil [07°06’S, 34°51’W], 2003-2004, S. C. Dias ( IBSP 99992 View Materials ). Paratype: one male from Sucua Province , Morona-Santiago, Ecuador [02°27’S, 78°10’W], VI-VII.1979, N. Engler ( MCZ 90523 View Materials ) GoogleMaps .

Etymology. The specific name is a noun and a patronym in honor of the arachnologist and collector of the holotype, Sidclay C. Dias.

Conditions of holotype. Missing right leg IV, left tarsus IV and right leg I loose in the vial.

Diagnosis. The males of T. diasi sp. nov. ( Figs. 115–117) resemble those of T. peruana sp. nov. ( Fig. 128) by the divided and slender apex of the median apophysis (MA), but can be distinguished by the undivided median apophysis ( Figs 115, 117) and by the thick, short and curved ental branch of RTA ( Fig. 116).

Description. Male (Holotype, João Pessoa, Paraíba, Brazil, IBSP 99992). Total length 6.05. Carapace 3.40 long, 3.15 wide, light brown with a thin white lateral band formed by small white bristles. Clypeus light brown, 0.44 high. Anterior eye row slightly procurved ( Fig. 19), 0.76 wide; posterior recurved, 1.52 wide. Eye diameters, interdistances, and median ocular quadrangle: AME 0.14, ALE 0.11, PME 0.24, PLE 0.22; AME-AME 0.12, AME-ALE 0.09, PME-PME 0.28, PME-PLE 0.34, OQA 0.40, OQP 0.74, OQH 0.54. Chelicerae reddish-brown with a lateral tuft of white bristles ( Fig. 19). Sternum whitish, bristly; 1.41 long, 1.49 wide. Labium dark brown, light brown distally, 0.49 long, 0.55 wide. Legs brown, unmarked; relative length: I-II-IV-III, I—femur 4.15/ patella-tibia 5.81/ metatarsus 3.56/ tarsus 1.66/ total 15.18; II—4.31/ 5.31/ 3.40/ 1.57/ 14.59; III—3.56/ 4.23/ 2.65/ 1.24/ 11.68; IV—4.73/ 5.47/ 3.81/ -/ 14.01. Ventral pairs of macrosetae on tibiae: I-4; II-4; III-3; IV-4. Superior tarsal claw with ten teeth and inferior with one tooth ( Fig. 118). Abdomen 2.57 long, dark gray with two lateral thin white bands formed by small white bristles; dorsum with an irregular light brown patch on cardiac area; with two pairs of sigillae. Venter yellow, with scattered bristles. Palpus with a divided median apophysis, with a longer and slender apex ( Figs 115, 117) and short distal tegular projection ( Fig. 115). Ental branch of RTA short, with a lateral groove ( Fig. 116) and ectal branch of RTA with a thin and folded apex ( Fig. 116).

Female. Unknown.

Distribution. Brazil (Paraíba), Ecuador (Sucua Province) ( Fig. 1).


Museum of Comparative Zoology