Olfactive effects for C.
citratus, C. nardus, C. giganteus and C. schoenanthus essential oils on melon fly (B.
cucurbitae) were evaluated using a four-arm olfactometer. The results showed that C.
giganteus and C. schoenanthus repel mostly the fruit fly B. cucurbitae, compared with C.
nardus and C. citratus and that female and male B. cucurbitae responded similarly to odours
emitted from all essential oils evaluated. The number of pupae collected from zucchini treated
with C. giganteus was significantly lower than that collected from zucchini treated with C.
nardus when exposed to female B. cucurbitae, regardless of the concentrations.