Ectomomyrmex javanus

Distribution
This taxon was described from Indonesia (Java). It is also found in Philippines, Cambodia, India, Japan, Republic of Korea, Japan, China and Taiwan.

Japan (Kyushu (southern part), Tsushima I., Nansei Is).

Biology
This species  nests  under  stones  at  forest margins. Workers may be found foraging individually on the ground; they do not form trails, and are able to sting painfully.

Nomenclature

 *  javana. Ectomomyrmex javanus Mayr, 1867a: 84, pl. 2, fig. 9 (w.q.) INDONESIA (Java). Ogata, 1987: 113 (m.). Combination in Pachycondyla (Ectomomyrmex): Emery, 1900d: 667; in Ectomomyrmex: Bingham, 1903: 86; Wheeler, W.M. 1921c: 530; in Pachycondyla: Brown, in Bolton, 1995b: 306. Senior synonym of cambodjana, denticeps, horni, japonica, maternus, sundaicus, tonkina: Yasumatsu, 1962: 94. See also: Bingham, 1903: 87.
 * sundaicus. Ectomomyrmex sundaicus Mayr, 1867a: 85 (q.) INDONESIA (Java). Junior synonym of astuta: Bingham, 1903: 86; of javana: Yasumatsu, 1962: 94.
 * maternus. Ectomomyrmex javanus r. maternus Forel, 1900d: 321 (diagnosis in key) (w.) INDIA. Forel, 1922: 90 (q.). Combination in Pachycondyla (Ectomomyrmex): Emery, 1901a: 46. Raised to species: Bingham, 1903: 87. Subspecies of javana: Emery, 1911d: 79; Wheeler, W.M. 1913e: 233; Forel, 1922: 90. Junior synonym of javana: Yasumatsu, 1962: 94.
 * japonica. Pachycondyla (Ectomomyrmex) japonica Emery, 1902c: 31 (w.) JAPAN. Teranishi, 1940: 6 (m.). Combination in Ectomomyrmex: Santschi, 1925f: 82. Junior synonym of javana: Yasumatsu, 1962: 94.
 * cambodjana. Pachycondyla (Ectomomyrmex) astuta subsp. cambodjana Forel, 1911e: 253 (w.) CAMBODIA. Junior synonym of javana: Yasumatsu, 1962: 94.
 * horni. Pachycondyla (Ectomomyrmex) horni Forel, 1913f: 185 (w.q.) TAIWAN. Combination in Ectomomyrmex: Santschi, 1925f: 82. Junior synonym of javana: Yasumatsu, 1962: 94.
 * denticeps. Ectomomyrmex denticeps Wheeler, W.M. 1929g: 32, fig. 2 (w.) TAIWAN. Junior synonym of javana: Yasumatsu, 1962: 94.