| Occurrence | Known from two recently-discovered localities in north-central Massachusetts |
| Abundance | Rare (the rarest known resident species of butterfly); maximum ? |
| Flight Period | Late May - early June |
| Notes | One of the great mysterious butterflies of the Northeast |
| Overwintering | Pupa |
| More info |
Massachusetts Butterfly Atlas Website |
| More info |
Butterflies of Massachusetts Website |
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| This species is in the process of being listed as a species 'threatened' in Massachusetts. If you find specimens of this species, please take a photograph, note your location carefully, and fill out a Rare Animal Observation Form for the Massachusetts Division of Fisheries and Wildlife.
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| More information on Endangered Species in Massachusetts. |
Photo by Tom Murray - 5/30/2004
Petersham |
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Photo by Tom Murray - 5/30/2004
Petersham |
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Photo by Dave Small - 5/29/1999
Petersham |
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Photo by Frank Model - 6/6/2007
Tom's Swamp, Petersham |
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Photo by Frank Model - 6/6/2007
Tom's Swamp, Petersham |
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Photo by Barbara Spencer - 5/30/2006
Tom's Swamp, Petersham |
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Photo by Barbara Spencer - 5/30/2006
Tom's Swamp, Petersham |
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