Tetramorium chapmani

Nothing is known about the biology of .

Identification
Bolton (1977) - A very conspicuous species, chapmani is closely related to Tetramorium khnum, also of the Philippines. The two are easily distinguished as khnum lacks the gastral sculpture characteristic of chapmani.

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

Nomenclature

 *  chapmani. Tetramorium chapmani Bolton, 1977: 120, fig. 46, 47 (w.) PHILIPPINES.

Worker
Holotype. TL 3.5, HL 0.80, HW 0.76, CI 95, SL 0.56, SI 74, PW 0.58, AL 0.96.

Mandibles striate; anterior clypeal margin entire. Frontal carinae long and strongly developed, reaching back almost to the occipital corners and surmounted by a narrow but quite distinct raised ridge or flange to behind the level of the eyes. Antennal scrobes conspicuous, extending back almost to the occipital corners. Maximum diameter of eye c. 0.14, the eyes situated in front of the middle of the sides of the head. Sides of head weakly convex, the occipital margin strongly impressed medially. Dorsum of alitrunk evenly convex in profile, the propodeal spines of moderate length, narrow, straight and acute. Metapleural lobes broadly triangular, acute apically. Shape of petiole and postpetiole, in profile as shown in Fig. 47. In dorsal view the petiole node globular. Entire dorsum of head from posterior clypeal margin to occiput covered with a dense, quite coarse rugoreticulum, the meshes of which are sharply defined and raised; the spaces enclosed by the meshes mostly smooth, at most with only vestigial ground sculpture. Area of antennal scrobes predominantly punctulate, with very reduced rugulae, contrasting strongly with the dorsum. Entirety of dorsal alitrunk, petiole and postpetiole sculptured as dorsum of head, but the pedicel segments rather less conspicuously so. Basal half of first gastral tergite densely and strongly longitudinally striate, the spaces between the striae with superficial punctulation. First gastral sternites sculptured but less strongly than the tergite. Relatively short, fine hairs numerous on all dorsal surfaces of head and body but hairs on scapes and dorsal (outer) surfaces of hind tibiae universally short, decumbent. Colour uniform orange-brown but the tibiae yellow-brown, distinctly lighter in colour than the femora.

Paratypes. As holotype but showing colour variations from orange-yellow to light reddish brown but always with the contrasting femoral-tibial colours. Range of dimensions are TL 3.2-3.5, HL 0.74-0.80, HW 0.72-0.78, CI 95-98, SL 0.54-0.60, SI 72-79, PW 0.54-0.60, AL 0.90-0.96 (13 measured).

Type Material
Holotype worker, Philippines: Dumaguete, Silliman University, xii.1950 (Domingo Empeso). Paratypes. 13 workers with same data as holotype (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.