RESUMO
Eucalyptus plantations can be affected by species of defoliating caterpillars. The integrated management of this group primarily involves a monitoring system, natural enemies, and biological products. Alternative control methods, including the use of conventional light traps, have not been adopted, mostly because of their low efficiency. Therefore, a more efficient light trap model was developed. The new model allowed the capture of 3.6 times as many insects as the conventional model, with a 261% gain in control efficiency. The use of this new model represents another integrated management alternative for lepidopteran pests of eucalyptus plantations and other cultured plants.
Assuntos
Eucalyptus , Controle de Insetos/instrumentação , Controle de Insetos/métodos , Insetos , Luz , Animais , Feminino , MasculinoRESUMO
ABSTRACT The eucalyptus snout beetle Gonipterus scutellatus Gyllenhal was found in Espirito Santo State, Brazil, attacking clonal plantations of Eucalyptus urophylla x E. grandis (hybrid urograndis). The presence of this species in Brazil has been known since 1979, with a geographical distribution restricted to Brazils South and São Paulo State. The pests introduction to the state of Espírito Santo was probably accidental and its occurrence has been limited to the central region of the state. Field surveys did not detect the egg parasitoid Anaphes nitens (Hymenoptera: Mymaridae), which is the main natural enemy of G. scutellatus.
RESUMO O gorgulho do eucalipto Gonipterus scutellatus Gyllenhal foi encontrado no Estado do Espírito Santo atacando plantações clonais de Eucalyptus urophylla x E. grandis (híbrido urograndis). Essa espécie de gorgulho é conhecida no Brasil desde 1979, tendo sua distribuição geográfica restrita aos estados da região Sul e São Paulo. A introdução do inseto no Estado do Espírito Santo foi provavelmente acidental e sua ocorrência tem se limitado à região central do Estado. Nos levantamentos de campo não foi detectado o parasitóide de ovos Anaphes nitens (Hymenoptera: Mymaridae), que é o principal inimigo natural do gorgulho do eucalipto.