| Occurrence | Mainly western and central MA - resident and migrant (from north) |
| Abundance | Variably rare to uncommon; maximum 12 |
| Flight Period | March 3 to mid-November (mainly summer) |
| Notes | Big flights (such as 1999) reach eastern MA but are rather rare events |
| Overwintering | Adult |
| More info |
Massachusetts Butterfly Atlas Website |
| More info |
Butterflies of Massachusetts Website |
| Online movie |
This species appears in the movie named 'Tortoiseshells' on the Butterfly Photos page. |
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Milbert's Tortoiseshell - Nymphalis milberti
Photo © Marj Rines - 7/19/2003
Dunback Meadow, Lexington |
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