Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide

Abstract

Life history of Dasineura gigantea Angela & Maia, 1.999 (Diptera, Cecidomyiidae).

Abstract

Dasineura gigantea induces bud-galls on the strawberry-guava (Psidium cattleianum, Myrtaceae), native plant of Brazil that was introduced in some tropical areas of the world. The galls are histioid, prosoplasmic and multiloculate (3,45±2,33 chambers for gall, n=260), and have growth initiated at two times: February/April and August/October. The females deposit eggs on the plant tissue and the feeding of the larvae induces the formation of galls (larval period: 152,27±9,35 days, n=86). These larvae show prothoracic spatula, used to open an orifice of exit for the adult. After the construction of this orifice, the larva searches shelter in the interior of the gall and changed itself into pupae (pupal period: 35,67±1,62 days, n=27). With the development of the completed adult, the insect wriggles and forces its exit through the exit orifice, leaving the pupal skin imprisoned to this orifice. The adults do not feed themselves and have a short period of life (one day, n=45), only the necessary time for mating and oviposition.