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Giant Silk MothsIs it a butterfly or a moth?
March 22, 2010
We found this insect on our porch and was wondering if it was a butterfly or moth? And what type is it?
Curious in AZ
Arizona
Dear Curious,
We suspect that the people who are writing in from California insisting that they have seen a Cecropia Moth are in fact encountering either your moth, the Columbia Silkmoth, Hyalophora columbia, or the Ceanothus Silkmoth, which are in the same genus. You may see additional photos of the Columbia Silkmoth on BugGuide which indicates: “Glover’s Silkmoth (H. c. gloveri) was formerly considered a separate species.”



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