| Occurrence | Connecticut River Valley eastward - resident |
| Abundance | Always local and typically uncommon; maximum 73 |
| Flight Period | May 1 - July 1 (mainly mid-May to mid-June) |
| Notes | Closely associated with Wild Indigo and/or Wild Lupine stands |
| Overwintering | Pupa |
| More info |
Massachusetts Butterfly Atlas Website |
| More info |
Butterflies of Massachusetts Website |
| Online movie |
This species appears in the movie named 'April Elfins' on the Butterfly Photos page. |
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| This species is in the process of being listed as a species 'of special concern' 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 © Marj Rines - 4/21/2002 Great Meadows, Lexington | Top of Page
Photo © Marj Rines - 6/5/1999 Horn Pond, Woburn | Top of Page
Photo by Erik Nielsen - 5/11/2003 Dover | Top of Page
Photo by Tom Murray - 5/13/2004 Foxboro | Top of Page
Photo by Bill Bouton - 5/30/2006 Foxboro | Top of Page
Photo by Howard Hoople - 6/5/2007 Weir Hill Reservation, North Andover Ovipositing Female | Top of Page
Photo by Tom Whelan - 5/24/2006 Chelmsford Power Lines, Chelmsford | Top of Page
Photo by Frank Model - 5/20/2006 Lamson Road, Foxboro | Top of Page
Photo by Barbara Spencer - 5/20/2006 Myles Standish State Forest, Plymouth | Top of Page
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