Myrmica sp.7

Japanese Name

Kado-kushike-ari

Total length of workers around 4 mm. Body color brown. Anterior margin of clypeus concave in the middle. Antennal scapes bent, each weakly lamellate on the dorsal surface of the bent at a right-angle to its axis. A further extension of this lamella is developed in large workers. The angle of the dorsal margin of the bend is about 120 degrees, viewed parallel to the flexing face of the funiculus. Antennal scape barely narrowed near their bases. Third funicular segment wider than long. Rugae on dorsa of head, mesosoma and petiole strongly impressed; the spaces between them wide. Metanotal groove shallow. Propodeal spines long. Petiolar node low and long.

Myrmica sp. 7 resembles M. jessensis, but is distinguished by the morphology of the bent section of the antennal scape and the petiolar structure. This species is rather rare. It is found in forests with sparsely vegetated floors and at the margins of woods in mountainous regions.

Hokkaido, Honshu (the Kinki District and northwards).