Strumigenys strygax

This species has been collected from litter samples in rainforest and rubber plantations.

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

Distribution based on Regional Taxon Lists
Indo-Australian Region: Borneo, Indonesia, Malaysia. Oriental Region: Thailand. Palaearctic Region: China.

Nomenclature

 *  strygax. Strumigenys strygax Bolton, 2000: 853 (w.) THAILAND.

Worker
Holotype. TL 2.5, HL 0.74, HW 0.66, CI 89, ML 0.31, MI 42, SL 0.36, SI 55, PW 0.33, AL 0.68. With characters of koningsbergeri-complex. Preocular concavity forms a shallow depression on ventral surface of head. Upper scrobe margins not constricted above eye, only extreme outer arc of eye visible in full-face view, or eye not visible. Depression across posterior vertex of head shallow, weakly developed. Pronotum without 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, metapleuron and side of propodeum smooth except for weak reticulate or reticulate-punctate sculpture around the periphery. Bullae of femoral glands absent on middle and hind legs. Lamella on propodeum conspicuous. Standing hairs on first gastral tergite weakly spatulate or slightly expanded and flattened toward the apex.

Paratypes. TL 2.1-2.5, HL 0.64-0.74, HW 0.54-0.65, CI 84-89, ML 0.26-0.31, MI 38-42, SL 0.30-0.38, SI 53-58, PW 0.25-0.32, AL 0.56-0.65 (5 measured).

Dimensions in non-paratypic workers. HL 0.64-0.75, HW 0.54-0.65, CI 84-88, ML 0.26-0.30, MI 38-43, SL 0.32-0.37, SI 56-60 (10 measured).

Type Material
Holotype worker, Thailand: Chiang Mai, Chang Khian, 16.xi.1984 (D. Jackson).

Paratypes. 5 workers with same data as holotype (BMNH,, ).

Determination Clarifications
This species was referred to as Strumigenys sp. 6 in Bolton, 1998b: 92.