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Pipevine Swallowtail (16657965378)

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Description: Most of the blue is seen in this shot but notice how some is not seen in the front part of the wing. This phenomenon is called Thin Film Interference. In the next shot there is almost no blue seen. Date: 29 July 2014, 14:47. Source: Pipevine Swallowtail. Author: John Flannery from Richmond County, North Carolina, USA.

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John Flannery
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3ece2c33d3c4544b89d160f37d2ac05c