Brazil harbors a very high diversity of Anastrepha species that infest a wide variety of hosts. Out of the 195 Anastrepha species currently described, 95 species are known from Brazil, and these infest fruits in 31 plant families (Zucchi 2000). Many Myrtaceae are important fruit fly hosts, and approximately 25 species in the genera Psidium, Eugenia, and Syzygium are infested (Hernandez-Ortiz 2000). Guava (Psidium guajava L.), endemic to the Neotropical region, is the most valuable ...