The great damage to the mature fruits in the orchard caused by the fruit sucking moths including unidentified species, is a troublesome problem in recent years in Korea. The present survey is, there-fort, carried out to clarify the ecological characters, especially kinds of these harmful moths and their damage at Suwon and Jinju fruit growing areas, in order to establish the foundation of the control. Some results obtained through the survey are as follows: It is investigated that the most noticeable group of these noxious moths, identified 10 species, belongs to subfamily Catocalinae of the family Noctuidae. Although there was already recorded as the harmful moths on the fruits such 4 species as Oraesia excavata B. Adris tyrannus amurensis S., Calpe thalictri B. and Dermaleipa juno Delman, it is additionally identified to be 6 species in 1968 including Oraesia emarginata F.,O. lata B., Agrotis ipsilon H., Chrysorithrum amatum Bremer et Grey, Dinumma deponens W. and Trachea atriplicis L. of the fruit sucking moths in Korea. Of all these noxious moths damaged, O. excavata is the most harmful, following by O. emarginata and Adris tyrannus. The fruit sucking moths attack on all kinds of mature fruits from early summer to late fall and behave entirely nocturnal. The damage ratio in percentage of these moths is $8.9\%$ on grape in Suwon, and $3.4\%$ on pears in Jinju.