| Occurrence | Statewide - resident and migrant |
| Abundance | Common to abundant; maximum 2000 |
| Flight Period | April 16 - December 30 (mainly early May to late October) |
| Notes | "Very variable in coloration, late fliers easily mistaken for Clouded Sulphurs" |
| Overwintering | 3rd and 4th instar - Larva |
| More info |
Massachusetts Butterfly Atlas Website |
| More info |
Butterflies of Massachusetts Website |