S.  Nakayama, ?An enumeration of the Japanese Aphelininae, with descriptions of two species?, Philippine Journal of Science, vol. 18, pp. 97-100, 1921.

R. G.  Mercet, ?Notas sobre Afelininos (Hym. Chalc.)?, R. Soc. Esp. Hist. Nat. Madrid (Spec. Vol.), pp. 299-309, 1921.