A survey of hymenopteran parasitoids of forest macrolepidoptera in the central appalachians
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| Authors: | Petrice, TR; Strazanac, JS; Butler, L |
| Year: | 2004 |
| Journal: | J. Econ. Entomol. 97: 451-459 Article Link (DOI) PubMed |
| Title: | A survey of hymenopteran parasitoids of forest macrolepidoptera in the central appalachians |
| Abstract: | In 1995 and 1996, we conducted a Study Of the hymenopteran parasitoids of macrol-epidopteran larvae in the George Washington National Forest (GWNF), Augusta County, Virginia, and the Monongahela National Forest (MNF), Pocahontas County, West Virginia. Macrolepidopteran larvae were collected from canopy foliage and front under canvas hands placed around tree holes. A total of 115 macrolepidopteran species and 5,235 individual larvae were reared. Forty-two percent (2.221) of the larvae were gypsy moth, Lymantria dispar (L.) (Lymantriidae). A total of 43 primary and seven secondary (hyperparasitoid) hymenopteran parasitoid species were reared front 46 macrolepidopteran species. Hymenopteran families represented included Ichneurnonidae (23 species), Braconidae (19), Eulophidae (6), Perilampidae (1), and Trigonalidae (1). We reared 41 and 28 parasitoid species front the GWNF and the MNF, respectively, with 19 species reared front both forests. Many parasitoid species were collected infrequently, suggesting that they are relatively rare on the sampled hosts. The introduced species Cotesia melanoscela (Ratzeburg) (Braconidae), and Euplectrus bicolor (Swederus) (Eulophidae) were among the most commonly reared parasitoids, the latter reared front native hosts. The four most commonly reared native parasitoids were Meteorus hyphantriae Riley (Braconidae), Microplitis near hyphantriae (Ashmead) (Braconidae), Aleiodes preclarus Marsh & Shaw, and Euplectrus maculiventris (Westwood) (Eulophidae). A total of 53 new hymenopteran parasitoid-macrolepidopteran host records were documented. Results from this study will be used to evaluate long-term treatment effects of regional applications of Bacillus thuringiensis kurstaki, and the gypsy Moth fungus Entomophaga maimaiga Humber, Shimazu & Soper on hymenopteran parasitoids of macrolepidopteran larvae. |
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