Published online by Cambridge University Press: 31 May 2012
Mr. Scudder, in his “Butterflies,” p. 136, says of this species: It is the longest lived of our butterflies. It leaves its winter quarters later in the season than other hibernating butterflies, and continues upon the wing until July and August, laying eggs all the time, so that the insect may be found in all its earlier stages most of the summer.