Euponera pilosior

Identification
Total body length of workers about 4.5 - 5 mm. Color dark reddish brown to blackish brown; antennae, mandibles and legs reddish brown. Head almost square in frontal view, slightly longer than wide. Mandibles each with a basal pit. Eyes small, each with about 10 facets. Subpetiolar process trapezoidal, with sub-angulate antero-ventral and posteroventral corners.

Distribution
This taxon was described from Japan. It is also found in China, Democratic People's Republic of Korea and Republic of Korea.

Japan (Honshu, Shikoku, Kyushu, Tsushima I., Nansei Is (Okinawa I. and northwards)); Korean Peninsula.

Biology
This species  is  relatively  rare. It inhabits forest leaf-litter.

Nomenclature

 *  pilosior. Euponera (Trachymesopus) sharpi subsp. pilosior Wheeler, W.M. 1928d: 98 (w.) JAPAN. Ogata, 1987: 114 (q.m.). Combination in Trachymesopus: Brown, 1963: 8; in Pachycondyla: Brown, in Bolton, 1995b: 308. Raised to species and senior synonym of chosonensis: Brown, 1963: 8.
 * chosonensis. Euponera (Trachymesopus) chosonensis Teranishi, 1940: 8 (w.) KOREA. Junior synonym of pilosior: Brown, 1963: 8.