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Natural parasitism of Spodoptera frugiperda and Helicoverpa zea (Lepidoptera: Noctuidae) eggs in corn by Trichogramma pretiosum (Hymenoptera: Trichogrammatidae) in Brazil

de Sa, LAN.; Parra, JRP.

Florida Entomologist 77(1): 185-188

1994


ISSN/ISBN: 0015-4040
DOI: 10.2307/3495886
Accession: 002659550

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In field plot tests in Sao Paulo, Brazil, in 1989-90, natural parasitism of eggs of Spodoptera frugiperda and Helicoverpa zea on maize by Trichogramma pretiosum occurred in all test plots. Parasitism of S. frugiperda was usually less than 20%, while that of H. zea commonly exceeded 50%.

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