Pyramica mutica

Hymenoptera On-Line


Pyramica mutica



Pyramica mutica


Pyramica mutica

Japanese Name


Original Reference

Brown, W. L., Jr. (1949) Revision of the ant tribe Dacetini. 1. Fauna of Japan, China and Taiwan. Mushi 20: 1-25.


Kyidris mutica Brown, 1949, Kyidris nuda Brown, 1949, Polyhomoa itoi Azuma, 1950, Pyramica mutica (Brown): Bolton, 1999,


Small ants: total length of workers around 1.5 mm. Body color reddish brown. Body surfaces from head to postpetiole finely reticulate. Paired scale-like hairs present on head and mesonotum. Posterior portion of propodeum simple, without teeth or lamellate structures. Spongiform material on petiole and postpetiole relatively weakly developed.


A rare species. The full synonymy of Pyramica mutica was given by Wilson & Brown (1965) and Bolton (2000). Imai et al. (1985) reported this species from Indonesia. Its full distribution could extend widely in tropical Asia. P. mutica is found at forest margins extending to more open situations, nesting in soil or decaying wood.


Honshu, Shikoku, Kyushu; Korean Peninsula, Taiwan, Indonesia (Bogor).


  • Brown, W. L., Jr. (1949a. ). Revision of the ant tribe Dacetini. I. Fauna of Japan, China and Taiwan. . Mushi, 20, 1-25.
  • Azuma, M. (1950). On the myrmecological-fauna of Tomogashima, Kii Prov., with the description of new genus and new species. Hyogo Biology1: 34-37. (In Japanese. Not published in 1949.)
  • Bolton, B. 1999. Ant genera of the tribe Dacetonini (Hymenoptera: Formicidae). J. Nat. Hist., 33: 1639-1689.
  • Wilson, E. O. & W. L. Brown, Jr. (1965). New parasitic ants of the genus Kyidris, with notes on the ecology and behavior. . Ins. Soc., 3, 439-454.
  • Bolton, B. 2000. The ant tribe Dacetini part 1. Memoirs of the American Entomological Institute, 65: 1-491.
  • Imai, H. T., M. Kubota, W. L. Brown, Jr., M. Ihara, M. Tohari & R. I. Pranata (1985). Chromosome observations on tropical ants from Indonesia. . Ann. Rep. Nat. Inst. Genetics, Japan, (35), 46-48.


Original text by Kazuo Ogata and Keiichi Onoyama. English translation by Kazuo Ogata, edited by Robert W. Taylor. Revised by Masashi Yoshimura.