Fall Last Sightings Dates
| Butterfly Species | 1998 | 1999 | 2000 | 2001 | 2002 |
| Buckeye ( Junonia coenia ) | 10/24 | 11/9 | 11/2 | 11/3 | 10/15 |
| Mourning Cloak ( Nymphalis antiopa ) | 12/12 | 11/7 | 11/11 | 12/5 | 10/15 |
| Eastern Comma ( Polygonia comma ) | 10/12 | 11/13 | 11/2 | 11/3 | 10/19 |
| Milbert's Tortoise Shell ( Nymphalis milberti ) | 9/26 | 10/21 | 10/14 | 8/28 | 10/10 |
| Eastern-tailed Blue ( Everes comyntas ) | 10/24 | 10/31 | 10/27 | 10/20 | 10/15 |
| Cabbage White ( Pieris rapae ) | 10/26 | 11/9 | 11/2 | 11/17 | 10/22 |
| Red Admiral ( Vanessa atalanta ) | 10/10 | 11/7 | 10/13 | 11/2 | 10/20 |
| American Painted Lady ( Vanessa virgiensis ) | 10/17 | 10/31 | 9/13 | 10/2 | 10/1 |
| Painted Lady ( Vanessa cardui ) | 8/23 | 7/14 | 10/21 | 11/4 | 9/8 |
| Bronzed Copper ( Lycaena hyllus ) | 10/24 | 10/28 | 10/14 | 10/20 | 10/12 |
| Monarch ( Danaus plexippus ) | 10/28 | 10/17 | 11/11 | 11/16 | 10/13 |
| Fiery Skipper ( Hylephilia phyleus ) | 10/24 | 10/31 | 10/27 | 10/3 | 10/12 |
| Clouded Sulphur ( Colias philodice ) | 10/28 | 11/13 | 11/5 | 12/3 | 11/8 |
| Orange Sulphur ( Colias eurytheme ) | 12/2 | 11/13 | 11/5 | 12/5 | 10/20 |
| White Colias ( Colias species ) | 10/26 | 11/13 | 11/2 | 11/23 | 11/8 |
| Pearl Crescent ( Phyciodes tharos ) | 10/17 | 10/15 | 10/22 | 10/20 | 10/12 |