Rhopalomastix omotoensis

Japanese Name

Higebuto-ari

Terayama, M. (1996) Taxonomic studies of the Japanese Formicidae, part 2. Seven genera of Ponerinae, Cerapachyinae and Myrmicinae. Nature and Human Activities, 1, 9-32.

Total length of workers around 2 mm. Body color yellowish brown. Antennae 10-segmented. Scapes about half as long as the head width. Apical funicular segment large and flat, twice as long as wide, almost equal in length to the remaining funiculus. Eyes small. Dorsum of mesosoma straight in profile. Promesonotal suture absent dorsally, and obscure laterally. Legs short, trochanters and tibiae flattened. Petiole high, with short peduncle; subpetiolar process forming an obtuse triangle. Postpetiole higher than long in side view, posterior surface attached to first gastral tergite.

Very rare: the single known record is from Mt. Omoto-dake on Ishigaki Island.

Ishigaki I. [Hidetsune Takamine leg.]