Tetramorium tylinum

Nothing is known about the biology of .

Identification
Bolton (1977) - The closest known relative of tylinum is Tetramorium flagellatum, which is also known from the same locality in Borneo. T. flagellatum is quickly separable from tylinum by its exceptionally long pilosity and the presence of long, erect hairs on the outer surface of the hind tibiae.

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

Nomenclature

 *  tylinum. Tetramorium tylinum Bolton, 1977: 123, fig. 53 (w.) BORNEO.

Worker
Holotype. TL 3.7, HL 0.84, HW 0.80, CI 95, SL 0.62, SI 77, PW 0.60, AL 0.98.

Mandibles striate; anterior clypeal margin entire. Frontal carinae long, extending back almost to the occipital corners, but only weakly developed. Over most of their length the frontal carinae are no more strongly developed than the other cephalic sculpture. Antennal scrobes poorly developed, very shallow but still quite easily visible. Eyes situated well in front of the midlength of the sides of the head in full-face view, their maximum diameter c. 0'18. Occipital margin of head strongly concave medially in full-face view. Alitrunk in profile evenly convex, the propodeal spines straight, strongly tapered apically and very sharp. Metapleural lobes acutely triangular, somewhat upcurved. Petiole in profile shaped as in Fig. 53, without a defined posterodorsal angle so that the dorsum rounds into the posterior face. In dorsal view the petiole node is slightly broader than long. Dorsum of head with a fine, dense and somewhat irregular rugoreticulum, the area of the antennal scrobes more finely and more densely sculptured, having a rough appearance. Dorsal surfaces of alitrunk and petiole finely reticulate-rugose, the latter less strongly so than the former. Dorsum of postpetiole un sculptured centrally and mostly so elsewhere, but with some traces of rugulae around the sides of the dorsum. Gaster unsculptured. All dorsal surfaces of head and body with abundant fine, erect or suberect hairs of varying length. Longest hairs on scapes not equal to the width of the scape, without a spaced row of elongate hairs. Dorsal (outer) surfaces of hind tibiae with abundant short hairs but without long prominent hairs. Colour dark reddish brown, the appendages yellowish.

Paratypes. As holotype: TL 3.6-3.7, HL 0.84-0.86, HW 0.80-0.82, CI 95-97, SL 0.60-0.64, SI 74-80, PW 0.58-0.62, AL 0.96-1.00 (5 measured). Maximum diameter of eye c. 0.18 in all paratypes.

Type Material
Holotype worker, Borneo: N., Kiduk Arok, Trus Madi Massif, 1500 m, ix.1956, no. 21, Cambridge N. Borneo Exped. (P. W. Bryant). Paratypes. 5 workers with same data as holotype but no. 34A (MCZC; ).

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.
 * Bolton, B. "The ant tribe Tetramoriini (Hymenoptera: Formicinae. The genus Tetramorium Mayr in the Oriental and Indo-Australian regions and in Australia." Bulletin of the British Museum (National History): Entomology series 36, no. 2 (1977): 68-151.
 * Pfeiffer M.; Mezger, D.; Hosoishi, S.; Bakhtiar, E. Y.; Kohout, R. J. 2011. The Formicidae of Borneo (Insecta: Hymenoptera): a preliminary species list. Asian Myrmecology 4:9-58