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button20_gw

Question about host plants and butterflies

button20
10 years ago

What evolutionary or other reason may explain how different species of Lepidoptera use the same host plant? Like Morning cloaks and Viceroys use black willow ( where I live they do) and Cecropias, E. Tiger swallowtail and Red - spotted Purples use Wild Black cherry. What in the plant attracts some species of Leps and repels others?

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