60 butterflies were recorded flying in Florida in April in our iNaturalist sample; 19 of the top 50 are at their peak this month. The list is ranked by number of research-grade observations.
Top butterflies in April

Gulf Fritillary

Monarch
White Peacock

Horace's Duskywing
Zebra Longwing

Great Southern White

Common Buckeye

Phaon Crescent

Fiery Skipper

Eastern Giant Swallowtail

Dainty Sulphur
Ceraunus Blue
All butterflies flying in Florida in April
| # | Species | Scientific name | Family | Obs. | Peak in state |
|---|---|---|---|---|---|
| 1 | Gulf Fritillary | Dione vanillae | Brush-footed Butterflies | 3,025 | Oct (rising) |
| 2 | Monarch | Danaus plexippus | Brush-footed Butterflies | 3,000 | Apr (peak) |
| 3 | White Peacock | Anartia jatrophae | Brush-footed Butterflies | 1,671 | Oct (rising) |
| 4 | Horace's Duskywing | Erynnis horatius | Skippers | 1,534 | Apr (peak) |
| 5 | Zebra Longwing | Heliconius charithonia | Brush-footed Butterflies | 1,457 | Apr (peak) |
| 6 | Great Southern White | Ascia monuste | Whites, Yellows, and Sulphurs | 1,193 | Apr (peak) |
| 7 | Common Buckeye | Junonia coenia | Brush-footed Butterflies | 1,166 | Oct (rising) |
| 8 | Phaon Crescent | Phyciodes phaon | Brush-footed Butterflies | 841 | Apr (peak) |
| 9 | Fiery Skipper | Hylephila phyleus | Skippers | 800 | Sep (rising) |
| 10 | Eastern Giant Swallowtail | Heraclides cresphontes | Swallowtails and Parnassians | 758 | Sep (rising) |
| 11 | Dainty Sulphur | Nathalis iole | Whites, Yellows, and Sulphurs | 713 | Apr (peak) |
| 12 | Ceraunus Blue | Hemiargus ceraunus | Gossamer-winged Butterflies | 650 | Sep (rising) |
| 13 | Whirlabout | Hedone vibex | Skippers | 608 | Apr (peak) |
| 14 | Cassius Blue | Leptotes cassius | Gossamer-winged Butterflies | 606 | Apr (peak) |
| 15 | Monk Skipper | Choranthus capucinus | Skippers | 605 | Apr (peak) |
| 16 | American Lady | Vanessa virginiensis | Brush-footed Butterflies | 572 | Apr (peak) |
| 17 | Palamedes Swallowtail | Papilio palamedes | Swallowtails and Parnassians | 557 | Sep (rising) |
| 18 | Zebra Swallowtail | Eurytides marcellus | Swallowtails and Parnassians | 526 | Mar (past peak) |
| 19 | Atala | Eumaeus atala | Gossamer-winged Butterflies | 504 | Jul (rising) |
| 20 | Pearl Crescent | Phyciodes tharos | Brush-footed Butterflies | 485 | Apr (peak) |
| 21 | Queen | Danaus gilippus | Brush-footed Butterflies | 464 | Sep (rising) |
| 22 | Julia Heliconian | Dryas iulia | Brush-footed Butterflies | 454 | Apr (peak) |
| 23 | Spicebush Swallowtail | Papilio troilus | Swallowtails and Parnassians | 443 | Sep (rising) |
| 24 | Red Admiral | Vanessa atalanta | Brush-footed Butterflies | 442 | Apr (peak) |
| 25 | Eastern Tiger Swallowtail | Papilio glaucus | Swallowtails and Parnassians | 440 | Sep (rising) |
| 26 | Ruddy Daggerwing | Marpesia petreus | Brush-footed Butterflies | 421 | Apr (peak) |
| 27 | Twin-spot Skipper | Oligoria maculata | Skippers | 336 | Sep (rising) |
| 28 | Viceroy | Limenitis archippus | Brush-footed Butterflies | 321 | Sep (rising) |
| 29 | Red-banded Hairstreak | Calycopis cecrops | Gossamer-winged Butterflies | 311 | May (rising) |
| 30 | Great Purple Hairstreak | Atlides halesus | Gossamer-winged Butterflies | 309 | Apr (peak) |
| 31 | Oak Hairstreak | Satyrium favonius | Gossamer-winged Butterflies | 301 | Apr (peak) |
| 32 | Cloudless Sulphur | Phoebis sennae | Whites, Yellows, and Sulphurs | 295 | Sep (rising) |
| 33 | Checkered White | Pontia protodice | Whites, Yellows, and Sulphurs | 288 | May (rising) |
| 34 | Little Wood Satyr | Megisto cymela | Brush-footed Butterflies | 282 | Mar (past peak) |
| 35 | Carolina Satyr | Hermeuptychia sosybius | Brush-footed Butterflies | 276 | Mar (past peak) |
| 36 | Orange-barred Sulphur | Phoebis philea | Whites, Yellows, and Sulphurs | 250 | Apr (peak) |
| 37 | Pipevine Swallowtail | Battus philenor | Swallowtails and Parnassians | 226 | May (rising) |
| 38 | Southern Broken-Dash | Polites otho | Skippers | 226 | Sep (rising) |
| 39 | Polydamas Swallowtail | Battus polydamas | Swallowtails and Parnassians | 218 | Jul (rising) |
| 40 | Gray Hairstreak | Strymon melinus | Gossamer-winged Butterflies | 212 | Jun (rising) |
| 41 | White M Hairstreak | Parrhasius m-album | Gossamer-winged Butterflies | 206 | Apr (peak) |
| 42 | Question Mark | Polygonia interrogationis | Brush-footed Butterflies | 205 | Apr (peak) |
| 43 | Northern Cloudywing | Cecropterus pylades | Skippers | 200 | Mar (past peak) |
| 44 | Mallow Scrub-Hairstreak | Strymon istapa | Gossamer-winged Butterflies | 196 | May (rising) |
| 45 | Barred Yellow | Eurema daira | Whites, Yellows, and Sulphurs | 193 | Nov (rising) |
| 46 | Delaware Skipper | Anatrytone logan | Skippers | 181 | Sep (rising) |
| 47 | Variegated Fritillary | Euptoieta claudia | Brush-footed Butterflies | 165 | May (rising) |
| 48 | Little Metalmark | Calephelis virginiensis | Metalmark Butterflies | 162 | Oct (rising) |
| 49 | Tropical Checkered-Skipper | Burnsius oileus | Skippers | 157 | Sep (rising) |
| 50 | Little Yellow | Eurema lisa | Whites, Yellows, and Sulphurs | 139 | Oct (rising) |