Scientific Name: Oncopeltus fasciatu
Family: Lygaeidae
Native Range: Central and North America to southern Canada, Pennsylvania
Size: 0.39 – 0.71 in. (10 – 18 mm)
Active: One generation produced in northern range during summer. Insects migrate south for winter.
Color and Appearance: Orange and black
Large Milkweed Bug on Common Milkweed
(Small Milkweed Adults and Nymphs in Background)
Large Milkweed Bug on Common Milkweed (Small Milkweed Bugs in Background) 
Large Milkweed Bug Nymph on Mountain Mint 
Large Milkweed Bug Opening Wings on Mountain Mint 
Large Milkweed Bug Opening Wings on Mountain Mint 
Large Milkweed Nymphs on Rugosa Rose