Template:Razowski,Becker, 2012
- Razowski, J. & Becker, V.O. 2012. Systematics and faunistics of Grapholitini, 2: Ethelgoda Heinrich, Ofatulena Heinrich, Cyanocydia gen. n., and Metacydia gen. n. Polish journal of entomology 81(3): 195–206. DOI: 10.2478/v10200-012-0007-x