| Species | Latin Name | Numbers | Max | First | Last |
|---|---|---|---|---|---|
| Clouded Sulphur | Colias philodice | 4137 | 198 | 4/25/1999 | 11/13/1999 |
| Cabbage Butterfly | Pieris rapae | 2390 | 60 | 3/31/1999 | 11/9/1999 |
| Alfalfa Butterfly | Colias eurytheme | 2243 | 161 | 5/2/1999 | 11/13/1999 |
| Pearl Crescent | Phyciodes tharos | 1865 | 240 | 5/9/1999 | 10/15/1999 |
| Silver-spotted Skipper | Epargyreus clarus | 820 | 61 | 5/2/1999 | 10/16/1999 |
| Eastern-tailed Blue | Everes comyntas | 700 | 39 | 5/2/1999 | 10/31/1999 |
| Viceroy | Limenitis archippus | 615 | 95 | 5/21/1999 | 10/9/1999 |
| Monarch | Danaus plexippus | 570 | 58 | 5/20/1999 | 10/17/1999 |
| Great Spangled Fritillary | Speyeria cybele | 550 | 58 | 6/12/1999 | 9/22/1999 |
| White Colias | Colias species | 537 | 30 | 5/1/1999 | 11/13/1999 |
| Little Wood Satyr | Megisto cymela | 482 | 50 | 5/21/1999 | 7/25/1999 |
| European Skipper | Thymelicus lineola | 481 | 70 | 6/4/1999 | 7/20/1999 |
| Summer Azure | Celastrina neglecta | 461 | 56 | 6/2/1999 | 9/6/1999 |
| Black Swallowtail | Papilio polyxenes | 381 | 50 | 4/25/1999 | 9/19/1999 |
| Tiger Swallowtail | Papilio glaucus | 360 | 21 | 4/26/1999 | 9/11/1999 |
| Peck's Skipper | Polites peckius | 324 | 33 | 5/21/1999 | 10/28/1999 |
| Spring Azure | Celastrina ladon | 294 | 45 | 4/8/1999 | 5/29/1999 |
| Wood Nymph | Cercyonis pegala alope | 264 | 27 | 6/25/1999 | 9/2/1999 |
| Spicebush Swallowtail | Papilio troilus | 251 | 32 | 5/11/1999 | 9/26/1999 |
| American Copper | Lycaena phlaeas americana | 232 | 23 | 5/1/1999 | 10/25/1999 |
| Fiery Skipper | Hylephilia phyleus | 187 | 12 | 6/14/1999 | 10/31/1999 |
| Buckeye | Junonia coenia | 145 | 11 | 6/9/1999 | 11/9/1999 |
| Giant Swallowtail | Papilio cresphontes | 135 | 26 | 5/20/1999 | 9/18/1999 |
| Least Skipper | Ancyloxypha numitor | 135 | 16 | 5/29/1999 | 9/18/1999 |
| Hobomok's Skipper | Poanes hobomok | 131 | 16 | 5/18/1999 | 6/26/1999 |
| Tawny Edged Skipper | Polites themistocles | 126 | 22 | 5/27/1999 | 9/11/1999 |
| Question Mark | Polygonia interrogationis | 115 | 10 | 4/28/1999 | 9/25/1999 |
| Eastern Comma | Polygonia comma | 112 | 8 | 3/27/1999 | 11/13/1999 |
| Delaware Skipper | Anatrytone logan | 111 | 29 | 6/26/1999 | 7/24/1999 |
| Wild Indigo Duskywing | Erynnis baptisiae | 108 | 7 | 5/3/1999 | 9/26/1999 |
| Milbert's Tortoise Shell | Nymphalis milberti | 104 | 33 | 3/20/1999 | 10/21/1999 |
| Juvenal's Duskywing | Erynnis juvenalis | 90 | 11 | 5/2/1999 | 6/25/1999 |
| Mourning Cloak | Nymphalis antiopa | 85 | 4 | 3/29/1999 | 11/7/1999 |
| American Painted Lady | Vanessa virginiensis | 84 | 7 | 4/25/1999 | 10/31/1999 |
| Baltimore | Euphydryas phaeton | 78 | 25 | 6/12/1999 | 7/14/1999 |
| Northern Broken Dash | Wallengrenia egeremet | 74 | 14 | 6/19/1999 | 9/6/1999 |
| Red-spotted Purple | Limenitis arthemis astyanax | 70 | 8 | 5/29/1999 | 9/12/1999 |
| Silvery Checkerspot | Chlosyne nycteis | 64 | 23 | 5/27/1999 | 8/20/1999 |
| Red Admiral | Vanessa atalanta | 62 | 5 | 4/24/1999 | 11/7/1999 |
| Tawny Emperor | Asterocampa clyton | 56 | 8 | 6/19/1999 | 7/31/1999 |
| Leonard's Skipper | Hesperia leonardus | 52 | 14 | 8/15/1999 | 9/19/1999 |
| Bronze Copper | Lycaena hyllus | 51 | 17 | 5/29/1999 | 10/28/1999 |
| Little Yellow | Eurema lisa | 51 | 16 | 6/11/1999 | 10/28/1999 |
| Dorcas Copper | Lycaena dorcas | 45 | 29 | 7/3/1999 | 7/18/1999 |
| Mulberry Wing | Poanes massasoit | 44 | 9 | 6/26/1999 | 8/1/1999 |
| Black Dash | Euphyes conspicua | 44 | 11 | 6/26/1999 | 8/1/1999 |
| Appalachian Eyed Brown | Satyrodes appalachia | 43 | 8 | 6/20/1999 | 8/5/1999 |
| Mustard White | Pieris napi | 42 | 6 | 4/26/1999 | 9/11/1999 |
| Northern Pearly Eye | Enodia anthedon | 42 | 7 | 6/19/1999 | 8/15/1999 |
| Dun Skipper | Euphyes vestris | 39 | 13 | 6/13/1999 | 8/8/1999 |
| Common Sootywing | Pholisora catullus | 38 | 7 | 5/22/1999 | 9/5/1999 |
| Dreamy Duskywing | Erynnis icelus | 34 | 15 | 5/14/1999 | 6/20/1999 |
| Aphrodite | Speyeria aphrodite | 33 | 15 | 6/20/1999 | 9/6/1999 |
| Sleepy Duskywing | Erynnis brizo | 25 | 5 | 4/26/1999 | 5/15/1999 |
| Eyed Brown | Satyrodes eurydice | 25 | 9 | 6/10/1999 | 8/1/1999 |
| Silver-bordered Fritillary | Boloria selene myrina | 23 | 7 | 5/29/1999 | 9/11/1999 |
| Crossline Skipper | Polites origenes | 23 | 4 | 6/18/1999 | 7/24/1999 |
| Meadow Fritillary | Boloria bellona | 22 | 5 | 4/25/1999 | 9/5/1999 |
| Southern Cloudywing | Thorybes bathyllus | 21 | 5 | 5/28/1999 | 7/24/1999 |
| Banded Hairstreak | Satyrium calanus | 20 | 5 | 6/19/1999 | 7/21/1999 |
| Long Dash | Polites mystic | 19 | 7 | 6/4/1999 | 6/26/1999 |
| Erynnis Species | Erynnis species | 19 | 4 | 5/2/1999 | 7/25/1999 |
| Acadian Hairstreak | Satyrium acadica | 17 | 4 | 6/21/1999 | 7/21/1999 |
| Harvester | Feniseca tarquinius | 17 | 4 | 7/3/1999 | 9/1/1999 |
| Hackberry Butterfly | Asterocampa celtis | 17 | 2 | 6/9/1999 | 9/12/1999 |
| Variegated Fritillary | Euptoieta claudia | 16 | 2 | 7/25/1999 | 10/30/1999 |
| Brown Elfin | Callophrys augustinus | 15 | 10 | 4/14/1999 | 5/11/1999 |
| Little Glassywing | Pompeius verna | 15 | 3 | 6/19/1999 | 8/3/1999 |
| Edward's Hairstreak | Satyrium edwardsii | 14 | 7 | 7/3/1999 | 7/3/1999 |
| Silvery Blue | Glaucopsych lygdamus | 13 | 10 | 5/15/1999 | 5/29/1999 |
| Horace Duskywing | Erynnis horatius | 11 | 3 | 7/5/1999 | 7/25/1999 |
| Northern Cloudywing | Thorybes pylades | 10 | 3 | 5/30/1999 | 7/4/1999 |
| Polygonia Species | Polygonia species | 10 | 1 | 5/15/1999 | 8/29/1999 |
| Pine Elfin | Callophrys niphon | 9 | 3 | 4/26/1999 | 5/15/1999 |
| Hoary Edge | Achalarus lyciades | 8 | 3 | 5/30/1999 | 7/3/1999 |
| Purplish Copper | Lycaena helloides | 8 | 5 | 9/5/1999 | 9/19/1999 |
| Coral Hairstreak | Satyrium titus | 8 | 3 | 6/25/1999 | 7/4/1999 |
| Striped Hairstreak | Satyrium liparops | 7 | 3 | 7/10/1999 | 7/18/1999 |
| Dion Skipper | Euphyes dion | 7 | 2 | 6/26/1999 | 8/1/1999 |
| Roadside Skipper | Amblyscirtes vialis | 6 | 2 | 5/11/1999 | 8/1/1999 |
| Broad-winged Skipper | Poanes viator | 6 | 5 | 7/3/1999 | 7/18/1999 |
| Harris' Checkerspot | Chlosyne harrisii | 5 | 3 | 6/12/1999 | 6/12/1999 |
| Compton's Tortoise Shell | Nymphalis vaualbum | 5 | 2 | 3/31/1999 | 8/28/1999 |
| Persius Duskywing | Erynnis persius | 5 | 3 | 5/2/1999 | 5/30/1999 |
| American Snout | Libytheana carinenta | 4 | 1 | 6/12/1999 | 7/28/1999 |
| Dukes Skipper | Euphyes dukesi | 3 | 2 | 7/4/1999 | 7/24/1999 |
| Pipevine Swallowtail | Battus philenor | 3 | 2 | 7/29/1999 | 8/6/1999 |
| Gray Hairstreak | Strymon melinus | 3 | 1 | 8/22/1999 | 10/11/1999 |
| Dainty Sulphur | Nathalis iole | 2 | 1 | 10/16/1999 | 10/31/1999 |
| Painted Lady | Vanessa carduii | 2 | 1 | 7/10/1999 | 7/14/1999 |
| Mottled Duskywing | Erynnis martialis | 2 | 1 | 5/15/1999 | 5/15/1999 |
| Tiger Swallowtail (Black) | Papilio glaucus | 2 | 1 | 7/24/1999 | 8/1/1999 |
| Hobomok's Skipper (Pocohantas) | Poanes hobomok | 2 | 1 | 5/30/1999 | 6/13/1999 |
| Hickory Hairstreak | Satyrium caryaevorum | 1 | 1 | 6/26/1999 | 6/26/1999 |
| Sachem | Atalopedes campestris | 1 | 1 | 9/15/1999 | 9/15/1999 |
| Gray Comma | Polygonia progne | 1 | 1 | 7/18/1999 | 7/18/1999 |
| Cloudless Sulphur | Phoebis sennae | 1 | 1 | 5/21/1999 | 5/21/1999 |
Last updated: 4/29/2002