Tetramorium infraspinum

Nothing is known about the biology of .

Identification
A member of the Tetramorium tonganum-species group.

Bolton (1977) - One of the two species of the Indo-Australian region to lack propodeal armament, infraspinum is quickly separated from Tetramorium tenuicrine, the other species with unarmed propodeum, by the fact that the antennae are II-segmented in tenuicrine and the body is mostly unsculptured.

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

Nomenclature

 *  infraspinum. Tetramorium infraspinum Forel, 1905c: 14 (w.) INDONESIA (Java). See also: Bolton, 1977: 127.

Worker
Bolton (1977) - TL 3.3, HL 0.70, HW 0.62, CI 90, SL 0.48, SI 77, PW 0.50, AL 0.84.

Anterior clypeal margin entire; mandibles striate. Antennal scrobes broad but shallow, extending back well beyond the level of the eye. Maximum diameter of the eye c. 0.14. Occipital margin feebly concave in full-face view, the sides of the head more or less straight. Alitrunk convex in profile; propodeum unarmed, with only an obtuse angle separating the sloping dorsum from the declivity. Metapleural lobes long, broadly triangular and very conspicuous. Petiole in profile with anterior and posterior faces roughly parallel, the dorsum feebly convex. In dorsal view petiole subglobular, about as broad as long; postpetiole broader than long. Dorsal surfaces of head, alitrunk and pedicel segments finely reticulate-rugulose, the median clypeal carina more strongly developed than the surrounding sculpture. Head and alitrunk with a fine superficial punctulation between the rugulae. Gaster un sculptured but with some enlarged hair-pits in the basal half. Fine, dense, relatively short hairs abundant on all dorsal surfaces but the antennal scapes and dorsal (outer) surfaces of the middle and hind tibiae only with short, dense, strongly curved hairs, without elongate straight erect or suberect stouter hairs. Colour uniform blackish brown, the appendages mid-brown.

Type Material
Bolton (1977) - Holotype worker, Java: Tjibodas, iii.1904 (K. Kraepelin) [examined].

References based on Global Ant Biodiversity Informatics

 * Bolton B. 1977. The ant tribe Tetramoriini (Hymenoptera: Formicidae). The genus Tetramorium Mayr in the Oriental and Indo-Australian regions, and in Australia. Bulletin of the British Museum (Natural History). Entomology 36:67-151.
 * Chapman, J. W., and Capco, S. R. 1951. Check list of the ants (Hymenoptera: Formicidae) of Asia. Monogr. Inst. Sci. Technol. Manila 1: 1-327
 * Forel A. 1905. Ameisen aus Java. Gesammelt von Prof. Karl Kraepelin 1904. Mitt. Naturhist. Mus. Hambg. 22: 1-26.
 * Roncin E. 2002. Two new Tetramorium species (Hymenoptera: Formicidae) from Vietnam with a discussion of the mixtum, tonganum, and scabrosum groups. Sociobiology 40: 281-292.