Pyramica terayamai

Japanese Name

Ymizo-uroko-ari

Bolton, B. (2000) The ant tribe Dacetini part 1. Memoirs of the American Entomological Institute, 65: 1-491.

Total length of workers around 2mm. Body color yellowish brown. Mandibles subtriangular. In full-face view, anterior margin of the clypeus slightly produced in the middle. Eyes very small. Leading margin of antennal scape forming an angulate elbow at basal 1/3. Dorsal surface of head with simple short hairs. Pronotal humeri without long and flagellate hairs. Parts of the mesopleuron smooth. Propodeal spines almost vestigial. Spongiform appendages developed on the lateral surfaces of the petiole and postpetiole.

This species was described by Bolton (2000) and corresponds to Pyramica sp. 12 of Terayama (2000). Murata (1990) reported it as Smithistruma rostrataeformis. Pyramica terayamai is similar to P. masukoi (Terayama, 2000), but distinguishable by the following character: dorsal surface of mesosoma with simple and club-shaped hairs in P. terayamai vs. with simple and flagellate hairs in P. masukoi. It is known only from Mt. Yamizo in Tochigi Prefecture.

Mt. Yamizo, Tochigi Pref.