"Notes on Incidence and Biology of the Predominant Parasitoids Attackin" by Alexander P. Kendrick, Kenneth F. Raffa et al.

Home > CLAS > BIO > TGLE > Vol. 38 > Numbers 3 & 4 - Fall/Winter 2005 (2005)

Article Title

Notes on Incidence and Biology of the Predominant Parasitoids Attacking the Cottonwood Leaf Beetle in Minnesota

Authors

Alexander P. Kendrick, University of Wisconsin
Kenneth F. Raffa, University of Wisconsin
Steven J. Krauth, University of Wisconsin
Norman E. Woodley, USDA

Document Type

Peer-Review Article

Abstract

Populations of the cottonwood leaf beetle, Chrysomela scripta Fabricius (Coleoptera: Chrysomelidae), in Minnesota were examined for the presence of parasitoids over a period of two years. Field samples of larvae and pre-pupae yielded two parasitoids: a tachinid fly, Cleonice setosa (Reinhard), and a pteromalid wasp, Schizonotus sieboldi (Ratzeburg). Incidence of parasitism by the tachinid was substantially higher than in previous reports, with 32.9% of third instar larvae and 81.4% of pre-pupae being parasitized. The pteromalid was present in 7.0% of pre-pupae. Both parasitoids were reared to adulthood in the laboratory, with the pteromalid exhibiting continued generations, but the tachinid completing development only after a cold treatment to break diapause.

Recommended Citation

Kendrick, Alexander P.; Raffa, Kenneth F.; Krauth, Steven J.; and Woodley, Norman E. 2005. "Notes on Incidence and Biology of the Predominant Parasitoids Attacking the Cottonwood Leaf Beetle in Minnesota," The Great Lakes Entomologist, vol 38 (2)
Available at: https://scholar.valpo.edu/tgle/vol38/iss2/3

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