Pristomyrmex collinus Wang ^HNS, 2003

Material examined: Luzon: Laguna Pr., Los Banos, Mt. Makiling, 13. - 18.XI.1992, leg. H. Zettel (# 1), det. Wang M., 1 [worker] (CZW); Laguna Pr., Los Banos, Mt. Makiling, Mud Spring, 23. - 24.I.1999, leg. H. Zettel (# 167), 1 [worker] (CZW); Laguna Pr., Mt. Banahaw, above Kinabuhayan, trail to Crystalino, 24.XI.1995, leg. J. Kodada & R. Rigova, det. Wang M., 3 [worker] (NHMW); Camarines Sur Pr., Lake Buhi area, nr. Itbog, Twin Falls, 22.III.1998, leg. H. Zettel (# 164), 3 [worker] (CZW); Tablas: San Agustin, Dubduban, Busai Falls, 23. - 25.XI.1994, leg. H. Zettel (# 70), det. Wang M., 1 [worker] (CZW); Mindanao: Surigao del Norte Pr., 40 km S Surigao, Songkoy Spring, 8.II.2000, leg. S. Schoedl (# 11), 1 [worker] (NHMW).

Diagnosis of worker: TL 3.3 - 3.9 mm. HW 0.77 - 0.94. Clypeus ventrally with central tooth. Antennal scrobe absent. Masticatory margin of mandible with diastema. Dorsum of head and alitrunk smooth and punctate, with sparse, relatively short setae. Pronotal spines tooth-like, subequal in length to propodeal spines. Anterior face of petiolar node distinctly separated from dorsal surface of peduncle. First gastral tergite without setae.

Previous records from the Philippines: Luzon: Laguna (Los Banos, Mt. Makiling, Mt. Banahaw), Romblon Prov: Tablas (San Agustin), Panay (without further information), Negros Oriental (Cuernos de Negros, Dumaguete [type locality]) (Wang 2003). - Luzon: Camarines Sur (Mt. Isarog Natural Park) (Alpert & al. 2006).

General distribution: endemic to Philippines.