Magnichela santaremensis, Silva, Estevam Luís Cruz Da & Lise, Arno Antonio, 2006

Silva, Estevam Luís Cruz Da & Lise, Arno Antonio, 2006, Description of two new spider genera of Trechaleidae (Araneae: Lycosoidea) from Northern Brazil, Zootaxa 1275, pp. 61-68 : 65-67

Magnichela santaremensis sp. n.

Figs 6–12

Types. ɗ holotype (MCN 25049) from Alter do Chão, Santarém, Pará, Brazil, 29.I.1994, A. D. Brescovit leg.

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

Diagnosis. The chelicerae are expanded laterally ( Fig. 8 ) and the palpus presents the ventral and dorsal division of median apophysis close together ( Fig. 11 ). Tibiae of palpi are dilated at the middle portion ( Figs 9, 11–12 ).

Description. ɗ (holotype). Carapace low ( Fig. 7 ), 2.44 long, 2.17 wide, light brownish; with two yellowish median bands, with dark brown border, fovea marked; cephalic area dark brown with sparse light spots ( Fig. 6 ). Chelicerae yellowish, almost glabrous medially, with a projection on the lateral ( Fig. 8 ). Endites yellowish, 0.23 long, 0.11 wide; labium yellowish, darker on the base, 0.34 long, 0.43 wide; sternum yellow, unmarked, darker at the margins, with light brown setae, 1.30 long, 1.08 wide. Legs yellowish, with brownish spots dorsally. Abdomen, 2.94 long, grayish with irregular orange spots dorsally, yellowish ventrally, total length 5.38. Clypeus 1.11 long, 0.09 high; dark at the anterior margin. Anterior eye row moderately recurved, 0.58 wide; posterior recurved, 1.39 wide. Eye diameters, interdistances and ocular quadrangle: AME 0.12, ALE 0.09, PME 0.22, PLE 0.12; AME–AME 0.08, AME–ALE 0.04, PME–PME 0.18, PME–PLE 0.37, MOQ, 0.32 long, dorsal view, 0.28 frontal view, anterior width 0.25, posterior 0.28. Chelicerae, reddish brown. Leg measurements: I femur 5.14/ patela­tibia 6.64/ metatarsus 5.16/ tarsus 2.07/ total 19.01; II 3.56/ 4.63/ 3.48/ 1.41/ 13.08; III 1.99/ 1.82/ 1.74/ 0.74/ 6.29; IV 3.41/ 3.48/ 3.47/ 1.32/ 11.68. Palpus with division of median apophysis and guide not conspicuous ventrally ( Fig. 11 ). The ectal division of retrolateral tibial apophysis is small and acuminated and ental division of retrolateral tibial apophysis longer and with a curved tip ( Figs 10, 12 ). Ventrodistal protuberance of male palpal tibia (VP) prominent ( Fig. 9 ).

Distribution. Brazil (Pará) ( Fig. 13 ).

Figures

FIGURE 13. Distribution of species of Amapalea gen. n. and Magnichela gen. n. in South America

FIGURES 6 – 12. Magnichela santaremensis gen. n. sp. n. 6 – 8, Habitus (6, dorsal; 7, lateral; 8, frontal view); 9 – 12, Left palpus (9, dorsal; 10, ventral; 11, prolateral; 12, retrolateral view). Abbreviations: DD—dorsal division of median apophysis; ECD—ectal division of retrolateral tibial apophysis; END—ental division retrolateral tibial apophysis; G—guide (terminal portion of median apophysis); VD—ventral division of median apophysis; VP—ventrodistal protuberance of male palpal tibia.