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Large Milkweed Bug
Large Milkweed Bug Photos
Above © Kim Hosen; Merrimac Farm Wildlife Management Area, Nokesville, VA; September 2011
Lower © Judy Gallagher; Metz Wetland, Woodbridge, VA; May 2010		    

Large Milkweed Bug
Oncopeltus fasciatus
Family Lygaeidae (Seed Bugs)

Size: 10-18 mm (adults)

Season: May through October

Habitat: Fields and meadows with milkweed and other flowers

Food: Seeds of milkweed plants; bugs accumulate toxins from the milkweed, which can potentially harm predators who do not heed the bright warning colors.