Species of Lepidoptera defoliators of Eucalyptus as new host for the parasitoid Palmistichus elaeisis (Hymenoptera: Eulophidae)

ABSTRACT

Pupae of Thyrinteina arnobia (Stoll) and Thyrinteina leucoceraea Rindge (Lepidoptera Geometridae) were obtained from Eucalyptus cloeziana F. Muell and Eucalyptus urophylla S.T. Blake plants, respectively. Specimens of a parasitoid emerged from T. arnobia pupae and also found parasitising T. leucoceraea pupae in the field were identified as Palmistichus elaeisis Delvare and LaSalle (Hymenoptera Eulophidae). This is the first report on P. elaeisis parasitizing T. arnobia and T. leucoceraea pupae in natural conditions in Brazil. P. elaeisis also parasitized these hosts and Bombyx mori Linnaeus (Lepidoptera Bombycidae), Anticarsia gemmatalis Hubner, Pseudaletia sequax Franclemont, Alabama argillacea Huebner (Lepidoptera Noctuidae), Dirphia moderata Bouvier (Lepidoptera Saturniidae) and Halysidota pearsoni Watson (Lepidoptera Arctiidae) in the laboratory. The production and release of P. elaeisis could be an efficient alternative for controlling Lepidoptera defoliators in eucalyptus plantations.

RESUMO

Pupas de Thyrinteina arnobia (Stoll) e Thyrinteina leucoceraea Rindge (Lepidoptera Geometridae) foram coletadas em Eucalyptus cloeziana F. Muell e Eucalyptus urophylla S.T. Blake, respectivamente. Espécimes de Palmistichus elaeisis Delvare and LaSalle (Hymenoptera Eulophidae) emergiram de T. arnobia e foram encontrados sobre pupas de T. leucoceraea em plantas de eucalipto no campo. Esse é o primeiro relato de P. elaeisis parasitando pupas de T. arnobia e T. leucoceraea em condições naturais no Brasil. Além desses hospedeiros, P. elaeisis parasitou em laboratório Bombyx mori Linnaeus (Lepidoptera Bombycidae), Anticarsia gemmatalis Hubner, Pseudaletia sequax Franclemont, Alabama argillacea Huebner (Lepidoptera Noctuidae), Dirphia moderata Bouvier (Lepidoptera Saturniidae) e Halysidota pearsoni Watson (Lepidoptera Arctiidae). A produção de P. elaeisis e sua liberação em eucaliptais podem representar uma alternativa eficiente de controle de lagartas desfolhadoras de eucalipto.