Ratasa alienalis (Eversmann, 1844) (Lep.: Pyralidae: Phycitinae), a genus and species new to Iran

The genus Ratasa Herrich-Schäffer, 1849 and R. alienalis (Eversmann, 1844) are identified based on a single male specimen collected in Golestan National Park, Sulgerd region and preserved in the Hayk Mirzayans Insect Museum. Both genus and species are newly reported for the fauna of Iran. Taxonomic characterization of the species as well as the adult male and male genitalia figures are presented herein.