Spicebush swallowtail (
Papilio troilus
) on bull thistle (
Cirsium vulgare
)
20 August 2017
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Supawna Meadows National Wildlife Refuge 08-20-2017
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Spicebush Swallowtail on Bull Thistle
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Last modified 9 March 2020
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2017 Michael Shevlin
