Due to the increase in fruit crops acreage in the northern and northwestern regions of Rio de Janeiro State and to the economic and quarantine importance of the fruit flies to this agricultural activity in the world, this study was carried out in five municipalities of these regions: Cambuci, Campos dos Goytacazes, Itaocara, São Francisco do Itabapoana, and São João da Barra, aiming to study the fruit fly species, their host plants and their parasitoids. The specimens were collected using McPhail traps with aqueous solution of hydrolyzed protein to 5% and in fruit samples. In the traps, 4% of the total of fruit flies captured were Ceratitis capitata and 96% were from the genus Anastrepha in a total of 15 species. From these flies captured in the traps, only six species infested fruits among the 12 species of fruits sampled. Fruit trees of the families Anacardiaceae, Malpighiaceae, Myrtaceae, Oxalidaceae, Passifloraceae and Sapotaceae were host plants of fruit flies. Only three species of Anastrepha (A. fraterculus, A. sororcula and A. zenildae) infested guavas of the commercial variety Paluma. The parasitoids of fruit fly larvae found were Doryctobracon areolatus and Aganaspis pelleranoi, parasitizing them in fruits of guava and other fruit trees in these regions.
Tephritidae; Braconidae; Figitidae; tri-trophic relationship
