The females come in two forms: a light form like this and a dark form, the latter of which makes it easy to ID those females. Four weeks ago, I posted a poor, ETSOOI’ed photo of a light Eastern Tiger Swallowtail. Comparing that one to this one, there is a distinct difference. The earlier post has a lot of “blue wash” near the edge of its hind wings; this post, not-so-much. I believe this is diagnostic: the earlier one with the blue wash is a female and this one is a male. Oh, the things I’ve learned from being a butterfly chaser because of 365…
» Species pages: [ BAMONA ] [ BugGuide ] [ UK Butterflies* ]
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* A single specimen was captured by a boy at Bray, County Wicklow, Ireland in late September (or early October) 1932 and is believed to have been accidentally imported from North America.
Retired economics professor (“dismal scientist”). Married 40+ years to the love of my life; we have two grown daughters, both married, two granddaughters and a...