Solenopsis japonica

Hymenoptera On-Line


Solenopsis japonica



Solenopsis japonica

Harvard MCZ


Solenopsis fugox var. japonica Wheeler


Solenopsis japonica

Japanese Name


Original Reference

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.


Solenopsis fugax var. japonica Wheeler (Wheeler, 1928) , Solenopsis japonica Wheeler (Collingwood, 1976) , Diplorhoptrum fugax var. japonicum (Wheeler) (Onoyama, 1980) ,


Worker caste weakly dimorphic. Total length of workers around 1.5 mm. Body yellow to yellowish brown. Head rectangular, about 1.35 times as long as wide. Antennal scapes short, not reaching posterior margin of head. Eyes small, each consisting of 2 to 4 facets. Dorsal outline of mesosoma weakly convex; metanotal groove deeply incised dorsally. Propodeum weakly convex; posterodorsal corner forming an obtusely rounded angle. Ventral margin of petiole almost straight, at most very weakly convex. Head, mesosoma, petiole and postpetiole with short, sparse, erect hairs. All body surfaces smooth and shining.


S. japonica was first described by Wheeler (1928) as S. fugax var. japonica. Ogata (1991) later raised japonica to species rank. The nests of this thief ant are connected to those of other ant species by narrow galleries which are used by the S. japonica workers to steal food from their hosts. Yamaguchi & Hasegawa (1990) suggested that this species could be a predator of soil insects.


Hokkaido, Honshu, Shikoku, Tsushima I., Kyushu, Yaku I., Tokara Is; Korean Peninsula.


  • Wheeler, W. M. (1928). Ants collected by Professor F. Silvestri in Japan and Korea. . Boll. Lab. Zool. Gen. Agrar. Portici, 21, 96-125.
  • Ogata, K. (1991). A generic synopsis of the poneroid complex of the family Formicidae in Japan (Hymenoptera). Part II. Subfamily Myrmicinae. Bull. Inst. Trop. Agr., . Kyushu Univ., 14, 61-149.
  • Yamaguchi, T. & M. Hasegawa (1990). Ant predation in soil. . Proc. 50th Ent. Congr. Jpn. , 43.
  • Collingwood, C. A. (1976). Ants (Hymenoptera, Formicidae) from North Korea. . Ann. Hist. Nat. Mus. Hung., 68, 295-309.
  • Onoyama, K. (1980). An introduction to the ant fauna of Japan, with a check list (Hymenoptera, Formicidae). . Kontyu, 48, 193-212.


Original text by Mamoru Terayama. English translation by Mamoru Terayama, edited by Robert W. Taylor.