Kuroiwa, T. 1926. Provisional list of the Hymenoptera collected in Loochoo Islands during the years 1905-1907. Transactions of the Natural History Society of Formosa 16:138-141. PDF

Notes: Formicidae pp. 138-139.

Sonan, J. 1940. M. Yanagihara's collection from Daito-Islands, Okinawa: Hymenoptera. Transactions of the Natural History Society of Formosa 30:369-375. PDF

Notes: Formicidae p. 375.

Yasumatsu, K. 1941c. Ants collected by Mr. H. Takahasi in Hingan (Hsingan) North Province, North Manchuria (Hymenoptera, Formicidae). [In Japanese.]. Transactions of the Natural History Society of Formosa 31:182-185. PDF