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Maryland designated the lovely Baltimore checkerspot butterfly (Euphydryas phaeton) as the official arthropodic emblem in 1973. This rare butterfly lives in boggy habitats and seems to be declining in its range (much of the eastern United States). Baltimore Checkerspot caterpillars feed in silk "nests" on turtlehead, false foxglove, plaintain, and ash. The adult butterfly has black and orange bordered wings speckled with white and orange spots.

Photo of white turtlehead plant (Chelone glabra L.). Turtleheads are
a host plant for Baltimore checkerspot butterfly caterpillars.
Photo by Robert H. Mohlenbrock @ USDA-NRCS Plants Database / USDA SCS. 1989. Midwest wetland flora: Field office illustrated guide to plant species. Midwest National Technical Center, Lincoln.
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