Aphaenogaster concolor

Nests are found in woodland or its margins, in the soil, under wood or in wood cavities (Japanese Ant Image Database).

Identification
Total length of workers 4.5 - 6 mm. Head and mesosoma brown to yellowish brown; gaster blackish to dark brown; legs yellowish brown. Similar to Aphaenogaster famelica and its subspecies erabu, but separable in having striation and punctation on the pronotal dorsum, and angulate pronotal humeri. The taxon varies in form and color. (Japanese Ant Image Database)

Distribution based on Regional Taxon Lists
Palaearctic Region: China, Japan.

Nomenclature

 * . Aphaenogaster concolor Watanabe & Yamane, 1999: 730, fig. 13 (w.q.m.) JAPAN.
 * Status as species: Imai, et al. 2003: 177; Guénard & Dunn, 2012: 39.

References based on Global Ant Biodiversity Informatics

 * Shimono A., and S. Yamane. 2003. Ant species diversity on Okinoerabu-jima, the Ryukyus, southern Japan. For the Establishment of Remote Islands Study (Kagoshima Univ.) 3: 11-29.
 * Terayama M. 2000. A list of Japanese ants changed after "A guide for the identification of Japanase ants I, II, III" (2). Ari 24: 13-21.
 * Terayama M., S. Kubota, and K. Eguchi. 2014. Encyclopedia of Japanese ants. Asakura Shoten: Tokyo, 278 pp.
 * Watanabe H., and S. Yamane. 1999. New species and new status in the genus Aphaenogaster (Formicidae) from Japan. Pp. 728-736 in: Yamane, S.; Ikudome, S.; Terayama, M. 1999. Identification guide to the Aculeata of the Nansei Islands, Japan. Sapporo: Hokkaido University Press, xii + 831 pp.
 * Yamane S. 2016. How many species of Ants in Amami Islands? (in Japanese). Part 2, chapter 1 in How many species of Ants in Amami Islands? Pp. 92-132.
 * Yamane S., S. Ikudome, and M. Terayama. 1999. Identification guide to the Aculeata of the Nansei Islands, Japan. Sapporo: Hokkaido University Press, xii + 831 pp. pp, 138-317.
 * Yamane S.; Ikudome, S.; Terayama, M. 1999. Identification guide to the Aculeata of the Nansei Islands, Japan. Sapporo: Hokkaido University Press, xii + 831 pp. pp138-317.