Host Egg Age of Leptoglossus occidentalis (Heteroptera, Coreidae) and Parasitism by Gryon pennsylvanicum (Hymenoptera, Platygastridae)

Leptoglossus occidentalis Heidemann (Heteroptera, Coreidae) is native to Western North America and is a serious pest for seed production of conifers. The pest was accidentally introduced into Europe in the 1990s. Since then, seed loss has been recorded in Pinuspinea (L.) forests, with a negative imp...

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Bibliographic Details
Published in:Journal of economic entomology 2013-04, Vol.106 (2), p.633-640
Main Authors: Peverieri, Giuseppino Sabbatini, Furlan, Paola, Benassai, Daniele, Caradonna, Sarah, Strong, Ward B, Roversi, Pio Federico
Format: Article
Language:English
Subjects:
Coreidae
Hemiptera
Hymenoptera
Leptoglossus occidentalis
Platygastridae
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Summary:Leptoglossus occidentalis Heidemann (Heteroptera, Coreidae) is native to Western North America and is a serious pest for seed production of conifers. The pest was accidentally introduced into Europe in the 1990s. Since then, seed loss has been recorded in Pinuspinea (L.) forests, with a negative impact on the commercial production of pine nuts. Classical biological control of this pest in P. pinea stands is an attractive proposition. Previous work showed that the egg-parasitoid Gryon pennsylvanicum (Ashmead) (Hymenoptera, Platygastridae) had promising life history traits in laboratory studies using L. occidentalis eggs as host. In the present work, the effect of host egg age on parasitization rate was evaluated in the laboratory, using choice and no-choice tests. Host eggs ranged in age from
ISSN:0022-0493
DOI:10.1603/EC12258