Range expansion of the invasive insect Greenidea (Trichosiphon) psidii (Hemiptera: Aphididae) in the Neotropical Region.

Greenidea psidii is an invasive insect from Asia that feeds on a diverse variety of agriculturally and environmentally important plant species. As an essential component of research necessary for development of a better understanding of biodiversity and its conservation, this study documents a major recent expansion in range of G. psidii in the Neotropics to the region of the tropical restinga ecosystem of Brazil, where it was found infesting guava (Psidium guajava) and jabuticaba (Plinia cauliflora). A summary of information on the geographic distribution, host plants, identification, and potential natural enemies of G. psidii that may be useful for integrated management of this pest in the Neotropical Region and other areas where this invasive insect has recently become established and is likely to further spread is also provided.