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Patrick Coin commented on an older version of Black Swallowtail:
Nice shot of the female. Extensive blue on hindwing is thought to be mimicry of the Pipevine Swallowtail, Battus philenor. Male Black Swallowtail lacks this extensive blue patch.
about 1 year ago
Katja Schulz marked "Black Swallowtail" as trusted on the "Papilio polyxenes" page.
about 2 years ago
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© Steven Severinghaus
Flickr: EOL Images
Location Created: Lake of the Woods, Illinois, United States
Average rating: 4.0 of 5
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