Strumigenys amnesia

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: Malaysia. Oriental Region: Thailand.

Nomenclature

 *  amnesia. Strumigenys amnesia Bolton, 2000: 838 (w.) WEST MALAYSIA.

Worker
Holotype. TL 2.6, HL 0.74, HW 0.62, CI 84, ML 0.34, MI 46, SL 0.43, SI 69, PW 0.32, AL 0.68. With characters of koningsbergeri-complex. Preocular concavity forms a broad depression on ventral surface of head. Upper scrobe margins constricted and concave above eye, entire eye visible in full-face view but its inner margin only just clear of the line of the scrobe margin. Edge of upper scrobe margin with a few minute tubercles but without a row of triangular teeth and lacking a decidedly 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. Katepistemum and at least upper half of metapleuron smooth. Bullae of femoral glands absent on middle and hind legs. Lamella on propodeum narrow, its posterior (free) margin usually concave for most of its length but more or less straight in some. Standing hairs on first gastral tergite simple and cylindrical, pointed apically.

Paratypes. TL 2.6-2.7, HL 0.72-0.76, HW 0.63-0.65, CI 85-88, ML 0.34-0.36, MI 47-48, SL 0.42-0.44, SI 66-70, PW 0.32-0.33, AL 0.68-0.72 (3 measured).

Non-paratypic workers from Thailand and Sumatra are slightly smaller. HL 0.64-0.69, HW 0.56-0.61, CI 86-88, ML 0.28-0.33, MI 44-49, SL 0.35-0.39, SI 63-66 (4 measured).

Type Material
Holotype worker (upper of two workers on pin), Malaysia: Pahang, Cameron Highlands, Gunung Jasar, 1720 m., 25.iii.1993, #19b (Lobl & Calame). Paratypes. 3 workers with same data as holotype (MHNG, ).