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Published online by Cambridge University Press: 31 May 2012
Some years ago I proposed the generic name Glaucopsyche for a group of blue butterflies of eastern N. America having a glaucous sheen to the upper surface of their wings; I had not then recognized its strictly generic alliance with a group of similar forms in Europe and on our pacific slope, which do not all possess this peculiarity, and to which the older generic name Nomiades Hübn. must be applied. A recent study of their common structural features, however, shows that GlacoPsychw can no longer be retained.
* Syst. Rev. Ann. Butt., 33.
* A prolonged study of all the species of N. American blues leads me to the conclusion that the true Life. Pembina Edw. has been twice redescribed; under the names L. Lycea Edw. and L. Rapahoe Reak.
* This species has sub-marginal markings on the wings.