George P. Markin, gmarkin@fs.fed.us, USDA Forest Service, Rocky Mountain Research Station, 1648 S. 7th Avenue, MSU, Bozeman, MT and Jeffrey L. Littlefield, Montana State University, Land Resources and Environmental Science, Plant Growth Center 213, MSU, Bozeman, MT.
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Species 1: Lepidoptera Arctiidae
Tyria jacobaeae (cinnabar moth)
Species 2: Coleoptera Chrysomelidae
Longitarus jacobaeae (tansy ragwort flea beetle)