Crematogaster vagula

Japanese Name

Kubomi-shiriage-ari

Wheeler, W.M. (1928) Ants collected by Professor F. Silvestri in Japan and Korea. Bollettino del Laboratorio di Zoologia generale e agraria del R. Istituto Superiore agrario di Portici 22: 96-125.

Crematogaster (Acrocoelia) matsumurai subsp. vagula Wheeler, W.M., 1928, Crematogaster vagula: Onoyama, 1998,

Total length of workers around 2 - 3 mm. Body color brown to blackish brown. Antennal club 3-segmented. Clypeus with fine longitudinal striae. Pronotal dorsum finely, longitudinally striate; the sides smooth. Mesonotal dorsum nearly flat at the anterior half and lowered at the posterior half; the middle part concave and strongly margined posterolaterally so that it appears to be depressed. Mesonotal dorsum without a longitudinal median carina. Mesonotal pleuron wholly punctured. Metanotal groove distinctly impressed, barely closed by a small lamella at the lateral border of its dorsum. Propodeal spines rather slender and long, each about twice as long as the width of its base. Petiole wider than long, the sides in dorsal view abruptly narrowed posteriorly. Subpetiolar process in lateral view acutely triangular, projecting anteriorly. Postpetiolar dorsum with a median furrow.

This species resembles C. teranishii, but is distinguishable because the pronotal sides are smooth and shining, and the posterior half of the mesonotal dorsum is concave.

Honshu, Shikoku, Tsushima I., Kyushu, Yaku I., Kuchierabujima I., Tairajima I., Amami-oshima I., Okinawa I., Miyakojima I., Ishigaki I., Iriomote I., Yonaguni I.