Genus Ogdenia Peckham, 1908

Rooseveltia Peckham & Peckham, 1907: 614; type species: Rooseveltia mutilla Peckham & Peckham, 1907, by original designation and monotypy.

Ogdenia Peckham, 1908: 171 (generic replacement name).

Diagnosis.

The genus closely resembles Siler Simon, 1889, but can be distinguished by: (1) the larger body size (6 – 10 mm); (2) the male femur I with only sparse setae (Figs 4 B, E, F, 5 O; femur I and tibia I covered with dense setae in Siler); (3) the male palp with a blunt posterior tegular lobe (PL) (Figs 8 B, C, 10 A, 11 E, 12 D; PL longer and narrower in Siler); (4) the chelicerae with dense brown setae on the front surface (Figs 1 B, D, 5 M, N, P, Q, T, U, 6 E, F, 7 A, C, E; setae sparse in Siler); (5) the presence of accessory glands (AGs) (Figs 9 B – F, 10 D, 11 B, D; AG not observed in Siler).

Description.

Medium-sized spiders (total length 6.51–8.00 in males, 7.98–10.00 in females). Body dark with pale yellow patches, covered with dense scales (Figs 3 A, B, 4 A – L, 5 A – D, 6 A – D, 7 B, D, F). Chelicerae with brown setae on front surface (male also with sparse blue scales), with two promarginal teeth and one retromarginal tooth (Figs 1 C, D, 3 C, 4 B, E, F, H, 5 P – U). Femur I of male covered with short and sparse setae (Figs 4 B, E, F, 5 O). Male palp (Figs 8 A – F, 10 A, B, 11 E, 12 C – E) with short embolus, palpal bulb with tegular bump at lower right corner. Female epigyne large, copulatory ducts short (Figs 9 A – G, 10 C, D, 11 A – D, 12 A, B).

Distribution.

China (Yunnan), Malaysia (Borneo, Johor, and Sarawak), Singapore (Bukit Timah Nature Reserve), Vietnam (Dak Lak).