Sturza, V.S. Dorfey, C. Poncio, S. Dequech, S.T.B. Bolzan, A. First record of larvae of Allograpta exotica Wiedemann (Diptera, Syrphidae)preying on Aphis gossypii Glover (Hemiptera, Aphididae)in watermelon in Brazil Subjects--Topical Terms: MELANCIAINSETODIPTERALARVAPRAGA DE PLANTA