Strumigenys ataxia

Identification
Bolton (2000) – A member of the koningsbergeri complex in the Strumigenys koningsbergeri-group. See Strumigenys chorosa.

Distribution based on Regional Taxon Lists
Indo-Australian Region: Indonesia.

Nomenclature

 *  ataxia. Strumigenys ataxia Bolton, 2000: 838 (w.) INDONESIA (Sumatra).

Worker
Holotype. TL 2.9, HL 0.88, HW 0.70, CI 80, ML 0.43, MI 49, SL 0.49, SI 70, PW 0.34, AL 0.76. With characters of koningsbergeri-complex. Preocular concavity forms a broad shallow depression on ventral surface of head. Upper scrobe margins not constricted, straight to shallowly convex above eye; only outer arc of eye visible in full-face view. Edge of upper scrobe margin without a row of low triangular teeth and lacking a jagged appearance. Depression across posterior vertex of head broad and shallow but distinct. Pronotum with a pair of short standing hairs close to anterodorsal margin. Pronotal humeral hair stiff, straight and simple. A single erect pair of hairs on mesonotum. Katepisternum mostly smooth and metapleuron with a patch where sculpture is effaced. Bullae of femoral glands absent on hind legs or present but very small and inconspicuous. Lamella on propodeum narrow, its posterior (free) margin concave. Standing hairs on first gastral tergite simple and cylindrical, pointed apically.

Paratypes. TL 2.9-3.0, HL 0.86-0.90, HW 0.68-0.72, CI 78-82, ML 0.40-0.44, MI 46-50, SL 0.47-0.51, SI 67-72, PW 0.33-0.34, AL 0.75-0.82 (7 measured).

Type Material
Holotype worker (top worker of three on pin), Indonesia: Sumatra, N Sum., 5 km. W Brastagi Tongkoh, 1450 m., 3.xii.1989, #29b (Lobl, Agosti & Burckhardt). Paratypes. 14 workers with same data as holotype (MHNG, ).