Abstract

Several species of Tephritidae fruit flies are economically important pests worldwide due to their easy acclimatization and high reproduction rate. The genus Anastrepha is one of the main ones widely distributed in Latin America. In this study, several species of fruit flies and biological controllers were monitored in apple and peach orchards in the cantons of Gualaceo and Paute, Azuay province, and Azogues, Cañar province, Ecuador. The field phase took place between June 2021 and July 2022 through the placement of McPhail traps containing a mixture of CPH-SUSBIN protein bait, water, and borax, with review and change of content every 15 days, to determine the species present and their relative abundance; in turn, fruits were collected and incubated to know the degree of infestation and the presence of parasitoids. Anastrepha fraterculus, A. grandis, and Ceratitis capitata were described, with infestation levels of 79% in apples and 81% in peaches, A. fraterculus with a relative abundance of 80% and the parasitoid Doryctobracon crawfordi was also present.