Aphaenogaster concolor

Nests are found in woodland or its margins, in the soil, under wood or in wood cavities.

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

 *  concolor. Aphaenogaster concolor Watanabe & Yamane, 1999: 730, fig. 13 (w.q.m.) JAPAN.