20 butterflies were recorded flying in Pennsylvania in March in our iNaturalist sample; 0 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in March
Mourning Cloak
Eastern Comma
Small White
Spring Azure
Eastern Tiger Swallowtail
Question Mark
Summer Azure
Gray Comma
Painted Lady
Monarch
Red Admiral
Black Swallowtail
All butterflies flying in Pennsylvania in March
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Mourning Cloak | Nymphalis antiopa | Brush-footed Butterflies | 231 | Apr (rising) |
| 2 | Eastern Comma | Polygonia comma | Brush-footed Butterflies | 220 | Aug (rising) |
| 3 | Small White | Pieris rapae | Whites, Yellows, and Sulphurs | 78 | Jul (rising) |
| 4 | Spring Azure | Celastrina ladon | Gossamer-winged Butterflies | 41 | Apr (rising) |
| 5 | Eastern Tiger Swallowtail | Papilio glaucus | Swallowtails and Parnassians | 12 | Jul (rising) |
| 6 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 9 | Jul (rising) |
| 7 | Summer Azure | Celastrina neglecta | Gossamer-winged Butterflies | 8 | Jul (rising) |
| 8 | Gray Comma | Polygonia progne | Brush-footed Butterflies | 6 | Jun (rising) |
| 9 | Painted Lady | Vanessa cardui | Brush-footed Butterflies | 4 | Aug (rising) |
| 10 | Monarch | Danaus plexippus | Brush-footed Butterflies | 4 | Aug (rising) |
| 11 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 4 | Jul (rising) |
| 12 | Black Swallowtail | Papilio polyxenes | Swallowtails and Parnassians | 4 | Aug (rising) |
| 13 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 2 | Aug (rising) |
| 14 | Spicebush Swallowtail | Papilio troilus | Swallowtails and Parnassians | 2 | Aug (rising) |
| 15 | Brown Elfin | Callophrys augustinus | Gossamer-winged Butterflies | 2 | May (rising) |
| 16 | Silver-spotted Skipper | Epargyreus clarus | Skippers | 2 | Aug (rising) |
| 17 | Pipevine Swallowtail | Battus philenor | Swallowtails and Parnassians | 1 | Jul (rising) |
| 18 | Orange Sulphur | Colias eurytheme | Whites, Yellows, and Sulphurs | 1 | Aug (rising) |
| 19 | Zebra Swallowtail | Eurytides marcellus | Swallowtails and Parnassians | 1 | Jul (rising) |
| 20 | White M Hairstreak | Parrhasius m-album | Gossamer-winged Butterflies | 1 | Aug (rising) |