Abstract
New records of Asopinae (Pentatomidae) predators of caterpillars Nystalea nyseus (Cramer, 1775) (Lepidoptera: Notodontidae). Defoliating caterpillars are important insect pests in forest plantations in Brazil. The aim of this study was to record the occurrence of predatory stinkbugs in outbreaks of Nystalea nyseus in eucalyptus plantations. The study was carried out in a seedling plantation of Eucalyptus saligna Smith in the municipality of Sao Sepe, Rio Grande do Sul. A visual inspection was performed to collect potential predators. The species Podisus nigrispinus, Brontocoris tabidus and Alcaeorrhynchus grandis, all belonging to the order Heteroptera and family Pentatomidae, were recorded. This may indicate the possibility of applied biological control with these predatory stinkbugs in population outbreaks of N. nyseus.
Highlights
Percevejos da família Pentatomidae, sub-família Asopinae apresentam amplo potencial de regulação biótica de insetos pragas em sistemas florestais
De acordo com Coll e Guershon (2002), o comportamento de predadores zoofitófagos que são capazes de trocar facultativamente a alimentação entre presa e planta, é extremamente importante no controle biológico, pois permite a manutenção desses inimigos naturais durante os períodos de escassez de presas
As espécies P. nigrispinus e A. grandis são registradas em lagartas de N. nyseus para o Estado do Rio Grande do Sul. À Dra. Jocelia Grazia da UFRGS pela identificação dos predadores
Summary
Percevejos da família Pentatomidae, sub-família Asopinae apresentam amplo potencial de regulação biótica de insetos pragas em sistemas florestais. Esse potencial é evidenciado pelo crescente interesse sobre esses organismos como agentes de controle biológico de insetos-pragas no Brasil (HOLTZ et al, 2009; TORRES; BOYD, 2009; ALMEIDA et al, 2011) o que segue uma tendência mundial (DE CLERCQ, 2000).
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