Parasitoids Attacking the Emerald Ash Borer (Coleoptera: Buprestidae) in Western Pennsylvania

Field surveys of the emerald ash borer (EAB), Agrilus planipennis Fairmaire, and associated parasitoids were conducted in Cranberry Township, PA from 11 Mar to 23 Oct 2008. Several species of parasitic Hymenoptera were collected from EAB-infested green ash trees or reared from late-instar EAB larvae...

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Bibliographic Details
Published in:The Florida entomologist 2009-12, Vol.92 (4), p.588-592
Main Authors: Duan, J. J, Fuester, R. W, Wildonger, J, Taylor, P. B, Barth, S, Spichiger, S. E
Format: Article
Language:English
Subjects:
Agricultural pests
Agrilus
Agrilus planipennis
Analysis
Ash (Tree)
Balcha indica
Beetles
Biological control
biological control agents
Borers (Insects)
boring insects
Control
developmental stages
Diseases and pests
Distribution
Emeralds
Eupelmidae
Eupelmus
Eupelmus pini
Field surveys
Fraxinus pennsylvanica
Host-parasite relationships
Ichneumonidae
Insect larvae
insect reproduction
Natural history
Parasite hosts
Parasitism
parasitoid
Parasitoids
Pests
Prepupae
Pupae
Research Papers
thelytoky
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Summary:Field surveys of the emerald ash borer (EAB), Agrilus planipennis Fairmaire, and associated parasitoids were conducted in Cranberry Township, PA from 11 Mar to 23 Oct 2008. Several species of parasitic Hymenoptera were collected from EAB-infested green ash trees or reared from late-instar EAB larvae, prepupae, and/or pupae. These included Balcha indica (Mani & Kaul), Eupelmus pini Taylor (Eupelmidae), Dolichomitus vitticrus Townes (Ichneumonidae), and 2 additional unidentified ichneumonids, Orthizema sp. Townes and Cubocephalus sp. Townes. Together, these parasitoids caused about 3.6% parasitism of EAB in the field. The most abundant species was B. indica accounting for 82% of all parasitoids recovered during our survey. Subsequent laboratory assays confirmed that B. indica and E. pini are solitary ectoparasitoids of EAB larvae, prepupae, and/or pupae. In addition, both B. indica and E. pini reproduce through thelytokous parthenogenesis; i.e., virgin females produce daughters. These parasitoids may be complementary to current classical biological control programs against EAB in North America, which have been focusing primarily on the introduction of exotic larval and egg parasitoids from China.
ISSN:0015-4040
1938-5102
DOI:10.1653/024.092.0409