Paradossenus pulcher Sierwald, 1993

Cruz, Estevam L., Silva, Da & Lise, Arno A., 2011, The Neotropical spider genus Paradossenus (Araneae, Trechaleidae): a new species, taxonomic notes and new records, Zootaxa 2781, pp. 63-68 : 64-66

Paradossenus pulcher Sierwald, 1993

Figs 1, 2 , 5

Paradossenus pulcher Sierwald, 1993: 58 , figs 3, 4, 29, female holotype from Amazonas, upper Rio Bario, Venezuela [2°49’N, 65°06’W], 20.VII.1984, L. S. Ford & C. W. Myers (AMNH) (examined); Carico and Silva, 2010: 228.

Diagnosis. The male of Paradossenus pulcher is similar to that of P. tocantins Carico & Silva, 2010 ( Carico & Silva 2010: 228, figs 17, 18) in the shape of the dorsal division of the median apophysis ( Fig. 1 ), but can be distinguished by presence of an ental division on the retrolateral tibial apophysis ( END) ( Fig. 2 ). The females of P. pulcher can be distinguished from the other known species of Paradossenus by the unique shape of the middle field, which is connected anteriorlly to the anterior field of the epigynum by a narrow bridge, and by a deep cleft posteriorly at the midline forming a pair of lobes ( Carico & Silva, 2010: 228, fig. 17).

Description. Male (Amazonas, Novo Airão/Moura, Brazil, IBSP 39940). Total length 7.47. Carapace 3.32 long, 3.07 wide, yellowish, with two median light brown bands, darker laterally. Clypeus yellowish, 0.10 high. Anterior eye row slightly procurved, 0.94 wide; posterior 1.50 wide, recurved. Eye diameters, interdistances, and median ocular quadrangle: AME 0.22, ALE 0.16, PME 0.20, PLE 0.21; AME-AME 0.14, AME-ALE 0.09, PME- PME 0.46, PME-PLE 0.30, OQA 0.52, OQP 0.88, OQH 0.46. Chelicerae yellowish, scattered setae; promargin with three teeth, retromargin of fang furrow with four teeth equidistant and equal in size. Sternum yellowish, with scattered setae; 1.41 long, 1.49 wide. Labium light brown, 0.58 long, 0.49 wide. Legs yellowish, relative length: I- IV-II-III, I—femur 7.88/ tibia-patella 10.64/ metatarsus 7.89/ tarsus 3.65/ total 30.06; II—4.98/ 5.81/ 3.99/ 1.90/ 16.68; III—2.90/ 3.07/ 2.49/ 1.49/ 9.95; IV—5.22/ 7.47/ 5.39/ 1.98/ 20.06. Ventral pairs of macrosetae on tibiae: I- 4; II-4; III-3; IV-3. Abdomen, 4.15 long, light brown, with a median whitish T-shaped mark anteriorlly, scattered setae on dorsum. Venter grayish, with scattered setae. Palpus with distinguished dorsal and ventral divisions of the median apophysis and acute guide ( Fig. 1 ). Retrolateral tibial apophysis with two branches (ental and ectal divisions) ( Fig. 2 ).

Material examined. BRAZIL, Amazonas: Novo Airão/Moura, Parque Nacional do Jaú, Igapó do rio Jaú [2°37’S, 60°56’W], 1 3, 1 Ƥ, 30. VI.2000, E. M. Venticinque leg. ( IBSP 39940).

Distribution. Ecuador, Venezuela, Brazil (Amazonas, Mato Grosso) ( Fig. 5 ).

Figures

FIGURE 5. Distribution of Paradossenus species in Brazil.

FIGURES 1 – 4. Paradossenus pulcher Sierwald, 1993. 1 – 2. male palpus (1 ventral view, 2 retrolateral). Paradossenus makuxi sp. n. 3, 4. female epigynum (3 ventral view, 4 dorsal). (DD = dorsal division of median apophysis, ECD = ectal division of the retrolateral tibial apophysis, END = ental division of the retrolateral tibial apophysis, FD = fertilization duct, G = guide of median apophysis, S = spermathecae, VD = ventral division of median apophysis, W = wing-shaped structures).