none Ascogaster reticulatus Watanabe (braconidae) is an egg-larval parasitoid of certain tortricids, e.g., Adoxophyes sp. (Ad) and Adoxophyes orana fasciata (Walsingham (Ao). In this study, the host preference by A. reticulatus was tested among two habitual hosts, Ad and Ao, and three unusual host species, Pandemis heparana Denis et Schifermueller (Ph), Homona magnanima Diakonoff (Hm), and Hoshinoa longicellana Walsingham (HI). The two-choice tests showed that the order of oviposition preference among the five tortricids was Ad - Ao> Hm> H1> Ph.