Althepus reduncus, Li, FENGYUAN, LI, SHUQIANG & Jäger, Peter, 2014

Li, FENGYUAN, LI, SHUQIANG & Jäger, Peter, 2014, Six new species of the spider family Ochyroceratidae Fage 1912 (Arachnida: Araneae) from Southeast Asia, Zootaxa 3768, pp. 119-138 : 129-133

Althepus reduncus spec. nov.

Figs 29-34, 47

Type material. Holotype: Male, MYANMAR: Southern Shan State, Pinlaung, Tupaia Cave , 20°08 ’12.5’’ N, 96°47 ’39.0” E, Helmut Steiner leg. 2.II.2012, NF47-13-105 , Myanmar Cave Documentation Project 2012. Paratypes: 3 males, with same data as for holotype ( SMF). 1 male, with same data as for holotype ( IZCAS) .

Etymology. The specific name is derived from the Latin “reduncus”, meaning "bound inward, dished", and refers to the unciform distal part of the conductor of the male; adjective.

Diagnosis. This new species is similar to A. lehi Deeleman-Reinhold 1985 in having conductor and embolus proximad, but can be distinguished by the hook-shaped distal part of the conductor (Fig. 30), the presence of more than one distal cymbial spine (Figs 29-34), by the longer palpal tibia and longer legs as well as by the larger body size (conductor not bent inwards, with one long distal cymbial spine, with shorter palpal tibia in A. lehi ).

Description. Male (holotype). Total length 6.16; prosoma 2.44 long, 2.19 wide; opisthosoma 3.72 long, 2.32 wide. Dorsal prosoma sub-circular, pale yellow, with dark lateral marginal bands and broad median band. Anterior margin of thoracic region distinctly elevated. Clypeus yellow, with two round brown bands separated medially. Cheliceral lamina reduced, promargin with three teeth, retromargin with two small teeth, the posterior surface of fang with 21 small denticles. Labium dark brown. Sternum yellow, with a brown wide line on the periphery. Opisthosoma elongate, with complex patterns dorsally and ventrally. Legs brown, femur and tibia annulated with white. Leg measurements: I 52.76 (12.15, 0.94, 12.75, 22.10, 4.82), II 34.00 (8.55, 0.85, 8.65, 13.15, 2.80), III 23.14 (6.85, 0.84, 6.05, 7.45, 1.95), IV 33.97 (9.55, 0.91, 9.05, 11.85, 2.61); leg formula: 1 2 4 3; palp 2.26 (0.86, 0.29, 0.55, 0.56), bulb 0.26 long 0.25 wide. Male palp (Figs 29-34): tarsus with three slightly curved, serrated bristles at the top and one spine slightly bent with tip retrolaterad; bulb bright yellow, ovate; conductor (Fig. 30) arising proximally from bulb, observably sigmoid, proximad; embolus (Fig. 30) arising retrolatero-distally from bulb, slightly sigmoid, proximad; embolus and conductor widely separated (the distance is almost equal to diameter of bulb).

Female: Unknown.

Variation. Prosoma: males 2.91-2.97 long, 2.62-2.84 wide; tibia I: 14.45-15.35 (n=2; leg I lost in other specimens).

Distribution. Known only from the type locality (Fig. 47).