Fruit fly diversity, their host plants and their parasitoids in the northern and northwestern regions of Rio de Janeiro State, Brazil.
Due to the increase in fruit crops acreage in the northern and northwestern regions of Rio de Janeiro, Brazil, and to the economic and quarantine importance of the fruit flies to this agricultural activity in the world, a study was carried out in 5 municipalities of these regions: Cambuci, Compos dos Goytocozes, Itoocara, São Francisco do Itabapoano, 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 hydrolysed protein (5%) and in fruit samples. In the traps, 4% of the total of fruit flies captured were Ceratitis capitata and 96% were from genus Anastrepha in a total of 15 species. From these flies, only 6 species infested fruits among the 12 species of fruits sampled. Fruit trees of the families Anacardiaceae, Malpighiaceae, Myrtaceae, Oxalidaceae, Passifloraceae and Sapotaceae were the host plants of the fruit flies. Only 3 species of Anastrepha (A. fraterculus, A. sororcula and A. zenildae) infested the commercial cultivar of guava, Paluma. The parasitoids found were Doryctobracon areolatus and Aganaspis pelleranoi in fruits of guava and other fruit trees.