Pristomyrmex hirsutus

Nothing is known about the biology of .

Identification
Wang (2003) - Worker. Masticatory margin of mandible with a long diastema; dorsal head with a well-developed rugoreticulum; petiole node in profile high, with a single evenly blunt-rounded apex; first gastral tergite with numerous erect or suberect short hairs.

Though only a single specimen is known it undoubtedly represents a good species because it has numerous erect or suberect hairs on the first gastral tergite, which is possessed only by this new species in the Oriental fauna of the quadridens group. In addition, this species has an uneven clypeus and a distinct petiole node (bearing a single evenly blunt-rounded apex) that is not seen in the other Oriental species of the group.

A member of the Quadridens species group / Key to Pristomyrmex workers

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

Castes
Known only from the worker caste.

Nomenclature

 *  hirsutus. Pristomyrmex hirsutus Wang, M. 2003: 449, figs. 144-145 (w.) PHILIPPINES.

Worker
Holotype. TL 5.78, HL 1.38, HW 1.40, CI 101, SL 1.60, SI 114, EL 0.28, PW 0.90, AL 1.52, PPW 0.38, PPL 0.42, PPI 90.

Mandibles smooth and shining. Masticatory margin of mandible with four teeth arranged as two adjacent strong apical teeth + a long diastema + two basal denticles of similar size. Basal margin of mandible lacking a toothlike prominence. Clypeus somewhat uneven, with a few weak short rugae. Anterior clypeal margin with a median denticle and two others on each side (but one of them appears to be fused by two small denticles). Frontal carinae extending to the level of the posterior margins of the eyes. Antennal scrobes shallow, approximately ending at the level of the posterior margins of eyes. Frontal lobes weak so that the antennal articulations are almost entirely exposed. Antennal scapes long, when laid on the dorsal head, surpassing the occipital margin by about one-third of their length. Pronotum armed with a pair of spines (ca. 0.19). Propodeum with a pair of somewhat elongate-triangular teeth (ca. 0.09). Metapleural lobes subtriangular. Petiole node in profile high (ca. 0.46), with a single evenly blunt-rounded apex. Postpetiole in profile rounded dorsally, in dorsal view longer than broad and broadening from front to back. Dorsum of head, except for the scrobal areas, with well-developed coarse rugoreticulum. Similar sculpture pre sent on the dorsum of the alitrunk and the two sides of the pronotum. Sides of the rest of the alitrunk with irregular coarse rugae. Petiole, postpetiole, and gaster smooth and shining. All dorsal surfaces of body, including head, alitrunk, petiole node, postpetiole, and gaster, with numerous erect or suberect hairs. A few pairs of forward-projecting hairs present near the anterior clypeal margin. Scapes and tibiae with erect or suberect hairs. Color reddish-brown.

Type Material
Holotype worker. . Phillipines: Misamis or Mt. Balatukan, 15 km SW of Gingoog, 1,000 to 2,000 m, 1-5.v.1960 (H. Torrevillas). The holotype of this species is an old specimen, and many hairs have obviously been removed from its first gastral tergite.