Natural enemies of <i>Myzocallis coryli</i> (Hom.: Aphididae) in Oregon hazelnut orchards

Authors

  • R. H. Messing Department of Entomology Oregon State University Corvallis, OR
  • M. T. AliNiazee Department of Entomology Oregon State University Corvallis, OR

Keywords:

<i>Myzocallis coryli</i>, Homoptera, Aphididae, <i>Adalia bipunctata</i>, <i>Cycloneda polita</i>, Coleoptera, Coccinellidae, <i>Deraeocoris brevis</i>, Hemiptera, Miridae, <i>Hemerobius</i>, <i>Chrysopa</i>, Neuroptera, Hemerobiidae, Chrysopidae

Abstract

Fifty-five species of aphidophagous predators were found in a survey of the hazelnut orchards of western Oregon. Important predators of the filbert aphid, <i>Myzocallis coryli</i> (Goetze), include: <i>Adalia bipunctata</i> (L.), <i>Cycloneda polita</i> Csy. (Coleoptera: Coccinellidae); <i>Deraeocoris brevis</i> (Uhler) (Hemiptera: Miridae); and species of <i>Hemerobius</i> and <i>Chrysopa</i> (Neuroptera: Hemerobiidae and Chrysopidae).

One parasitoid, <i>Mesidiopsis</i> sp. (Hymenoptera: Aphelinidae) was found to attack the aphid. In addition, one pathogenic fungus, <i>Triplosporium fresenii</i> (Nowakowski) Batko (Entomophthorales: Entomophthoraceae) was found to cause an epizootic in an orchard with a high aphid density.

References

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Published

2019-09-17

Issue

Vol. 82 (1985): Journal of the Entomological Society of British Columbia

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Articles

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