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Introduction into Italy of Gryon pennsylvanicum (Ashmead), an egg parasitoid of the alien invasive bug Leptoglossus occidentalis Heidemann

Leptoglossus occidentalis (Heteroptera, Coreidae), a Nearctic species, was accidentally introduced into Northern Italy in the late 1990s, from where it has spread throughout Europe. The bug causes abortion of immature cones of Pinus pinea L., with economic impact on the pine‐nut industry. As part of a pest control research program, the egg parasitoid Gryon pennsylvanicum Ashmead (Hymenoptera, Platygastridae) was collected from British Columbia, Canada, and legally introduced to a quarantine climatic chamber in Florence, Italy. The egg parasitoid will be tested against native non‐target heteropterans, an environmental impact assessment will be conducted, and a mass rearing method will be developed if appropriate. The ultimate goal is to release G. pennsylvanicum into Italian P. pinea forests for classical biological control of L. occidentalis.

Authors:   Roversi, P. F.; Strong, W. B.; Caleca, V.; Maltese, M.; Sabbatini Peverieri, G.; Marianelli, L.; Marziali, L.; Strangi, A.
Journal:   EPPO Bulletin
Volume:   41
Issue:   1
Year:   2011
Pages:   72
DOI:   10.1111/j.1365-2338.2011.02439.x
Publication date:   01-04-2011
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