genus of Protanilla sp.1

Hymenoptera On-Line





genus of Protanilla sp.1


Protanilla sp.1

Japanese Name


Original Reference


Total length of workers around 2.5 mm. Color yellowish to reddish brown. Mandibles long and triangular, down-curved at apical 1/3; inner surface with peg-like setae. Antennal scape slightly exceeding posterior margin of head. Head about 1.3 times as long as broad. Mesosoma slender. Promesonotum weakly arched; metanotal groove deeply impressed. Propodeum almost the same size as pronotum; dorsal surface longer than declivity in profile. Petiole and postpetiole almost matching in size. Ventral portion of petiole rounded, with a small subtrapezoidal projection. First gastral segment large. Sting long, with a triangular structure apically and a small tooth subapically. Body surface almost smooth, shining, without sculpture.


This species has been referred to as "Ponerinae ? sp." (Sonobe, 1972), "Gen. C sp. 1" [Japanese name: Okinawa-juzufushi-ari] and Gen. C sp. 2 [Senkaku-juzufushi-ari] of Myrmecological Society of Japan (1988). A colony collected from Seifaa-utaki, Okinawa I. in March contained one dealate female, 77 adult workers, 168 larvae and 17 eggs (Onoyama, unpublished). The postpetiole of the female is separated from the petiole by a marked constriction. A single, fused sternal plate, like that of Anomalomyrma, is not present. Found in Kyushu and the south, and also from Taiwan (Terayama, 1999). Not common.


Kyushu (Mt. Kirishima [Rikio Sonobe leg.], Kagoshima), Nansei Is (Mt. Yuwandake, Amami-oshima I. [Hidetsune Takamine leg.]; Tokunoshima I.; Nakijin, Okinawa I. [Kazuki Tsuji & P. Jaisson leg.], Seifaa-utaki, Okinawa I. [Keiichi Onoyama leg.]; Uotsuri-jima I., Senkaku Is [Takuya Abe leg.]); Taiwan.


  • Terayama, M. (1999). Family Formicidae. In Yamane, Sk., S. Ikudome & M. Terayama (eds.). Identification guide to the Aculeata of the Nansei Islands, Japan. Hokkaido University Press, pp. 138-317.
  • Sonobe, R. (1972). Ant fauna of the Mt. Kirishima area. InIn M. Kato, ed., "Studies on the animal comunities in the terestrial ecosystems and their conservation". Annual Report of JIBP-CTS for the fiscal year of 1971. (pp. 176-182).
  • Myrmecological Society of Japan, Editorial Committee (ed.) (Ed.). (1988). A list of the ants of Japan with common Japanese names. The Myrmecological Society of Japan, Tokyo.


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