Leptothorax arimensis

Japanese Name

Hime-muneboso-ari

Azuma, M. (1977) On the myrmecological fauna of Mt. Rokko, Hyogo, with description of a new species. Hyogo Biology 7: 112-118.

A small ant: total length of workers around 2 mm. Body color yellow to yellowish brown from mesosoma to gaster, head brown. Antennal scapes long, exceeding posterior margin of head. Dorsal outline of mesosoma gently and simply convex, without interruption in the metanotal section (propodeal dorsum almost straight in some individuals). Metanotal groove not incised dorsally. Propodeal teeth relatively short, slightly longer than their basal width. Petiolar node triangular, with straight anterior margin. Subpetiolar process very small to obscure.

L. arimensis ranges from lowlands to mountainous areas, up to about 1000 m above sea level. It nests in soil or dead twigs, and is relatively rare.

Hokkaido, Honshu, Shikoku.