| Species | Latin Name | Butterflies | 1998 | 1999 | 2000 | 2001 | 2002 | 2003 | 2004 | 2005 | 2006 |
| Acadian Hairstreak |
Satyrium acadica |
18 |
1 |
0 |
6 |
2 |
1 |
0 |
3 |
0 |
5 |
| Alfalfa Butterfly |
Colias eurytheme |
1845 |
7 |
75 |
79 |
72 |
366 |
113 |
465 |
501 |
167 |
| American Copper |
Lycaena phlaeas americana |
1422 |
62 |
68 |
42 |
81 |
306 |
257 |
143 |
279 |
184 |
| American Painted Lady |
Vanessa virginiensis |
252 |
18 |
18 |
21 |
96 |
12 |
38 |
25 |
17 |
7 |
| American Snout |
Libytheana carinenta |
5 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
2 |
1 |
| Aphrodite |
Speyeria aphrodite |
626 |
17 |
32 |
74 |
34 |
117 |
68 |
95 |
118 |
71 |
| Appalachian Eyed Brown |
Satyrodes appalachia |
9 |
0 |
2 |
1 |
1 |
0 |
2 |
2 |
1 |
0 |
| Baltimore |
Euphydryas phaeton |
6 |
1 |
1 |
1 |
0 |
0 |
2 |
0 |
0 |
1 |
| Banded Hairstreak |
Satyrium calanus |
12 |
0 |
1 |
4 |
2 |
1 |
0 |
1 |
0 |
3 |
| Black Swallowtail |
Papilio polyxenes |
94 |
4 |
11 |
1 |
11 |
9 |
18 |
9 |
23 |
8 |
| Bronze Copper |
Lycaena hyllus |
33 |
1 |
3 |
0 |
1 |
0 |
2 |
5 |
16 |
5 |
| Buckeye |
Junonia coenia |
125 |
3 |
5 |
17 |
1 |
16 |
0 |
35 |
15 |
33 |
| Cabbage White |
Pieris rapae |
1214 |
53 |
85 |
72 |
160 |
243 |
171 |
192 |
110 |
128 |
| Clouded Sulphur |
Colias philodice |
1579 |
20 |
79 |
87 |
104 |
122 |
63 |
401 |
265 |
438 |
| Common Sootywing |
Pholisora catullus |
28 |
4 |
3 |
2 |
1 |
7 |
6 |
2 |
2 |
1 |
| Coral Hairstreak |
Satyrium titus |
121 |
1 |
2 |
7 |
4 |
10 |
21 |
10 |
28 |
38 |
| Crossline Skipper |
Polites origenes |
93 |
1 |
8 |
7 |
12 |
10 |
9 |
14 |
22 |
10 |
| Delaware Skipper |
Anatrytone logan |
75 |
9 |
6 |
3 |
12 |
8 |
13 |
7 |
9 |
8 |
| Dion Skipper |
Euphyes dion |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
| Dreamy Duskywing |
Erynnis icelus |
210 |
4 |
21 |
23 |
18 |
13 |
33 |
49 |
12 |
37 |
| Dun Skipper |
Euphyes vestris |
112 |
17 |
17 |
14 |
15 |
3 |
12 |
23 |
2 |
9 |
| Dusted Skipper |
atrytonopsis hianna |
3 |
0 |
0 |
0 |
0 |
0 |
3 |
0 |
0 |
0 |
| Eastern Comma |
Polygonia comma |
36 |
0 |
1 |
6 |
8 |
1 |
9 |
1 |
5 |
5 |
| Eastern-tailed Blue |
Everes comyntas |
2803 |
137 |
130 |
93 |
213 |
198 |
129 |
347 |
660 |
896 |
| Edward's Hairstreak |
Satyrium edwardsii |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
| European Skipper |
Thymelicus lineola |
187 |
3 |
22 |
28 |
30 |
61 |
13 |
6 |
7 |
17 |
| Eyed Brown |
Satyrodes eurydice |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
1 |
| Fiery Skipper |
Hylephilia phyleus |
30 |
0 |
0 |
0 |
1 |
10 |
0 |
2 |
16 |
1 |
| Giant Swallowtail |
Papilio cresphontes |
78 |
1 |
5 |
9 |
6 |
7 |
11 |
3 |
15 |
21 |
| Gray Hairstreak |
Strymon melinus |
13 |
0 |
1 |
3 |
7 |
2 |
0 |
0 |
0 |
0 |
| Great Spangled Fritillary |
Speyeria cybele |
1272 |
78 |
129 |
237 |
166 |
81 |
94 |
122 |
173 |
192 |
| Hackberry Butterfly |
Asterocampa celtis |
10 |
0 |
0 |
1 |
2 |
4 |
1 |
0 |
1 |
1 |
| Harvester |
Feniseca tarquinius |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
0 |
| Hickory Hairstreak |
Satyrium caryaevorum |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
| Hoary Edge |
Achalarus lyciades |
80 |
1 |
4 |
5 |
5 |
9 |
16 |
23 |
12 |
5 |
| Hobomok's Skipper |
Poanes hobomok |
108 |
5 |
10 |
22 |
12 |
9 |
23 |
15 |
4 |
8 |
| Hobomok's Skipper (Pocohantas) |
Poanes hobomok |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Horace Duskywing |
Erynnis horatius |
58 |
17 |
2 |
11 |
7 |
4 |
3 |
2 |
5 |
7 |
| Juvenal's Duskywing |
Erynnis juvenalis |
194 |
1 |
16 |
11 |
68 |
5 |
22 |
35 |
7 |
29 |
| Least Skipper |
Ancyloxypha numitor |
30 |
4 |
5 |
3 |
0 |
9 |
1 |
2 |
2 |
4 |
| Leonard's Skipper |
Hesperia leonardus |
248 |
13 |
14 |
16 |
14 |
23 |
60 |
36 |
67 |
5 |
| Little Glassywing |
Pompeius verna |
39 |
6 |
1 |
3 |
4 |
0 |
3 |
8 |
6 |
8 |
| Little Wood Satyr |
Megisto cymela |
682 |
14 |
53 |
26 |
100 |
77 |
161 |
124 |
80 |
47 |
| Little Yellow |
Eurema lisa |
2 |
0 |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Meadow Fritillary |
Boloria bellona |
21 |
5 |
6 |
0 |
2 |
1 |
3 |
1 |
1 |
2 |
| Milbert's Tortoise Shell |
Nymphalis milberti |
2 |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
| Monarch |
Danaus plexippus |
1846 |
37 |
47 |
28 |
214 |
79 |
595 |
36 |
290 |
520 |
| Mourning Cloak |
Nymphalis antiopa |
18 |
0 |
2 |
3 |
4 |
3 |
0 |
2 |
3 |
1 |
| Northern Broken Dash |
Wallengrenia egeremet |
579 |
18 |
22 |
84 |
55 |
97 |
97 |
93 |
33 |
80 |
| Northern Cloudywing |
Thorybes pylades |
133 |
3 |
6 |
19 |
22 |
24 |
41 |
10 |
5 |
3 |
| Northern Pearly Eye |
Enodia anthedon |
8 |
0 |
1 |
0 |
2 |
0 |
2 |
2 |
0 |
1 |
| Ocola Skipper |
Panoquina ocola |
2 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2 |
0 |
| Painted Lady |
Vanessa carduii |
95 |
0 |
0 |
0 |
50 |
0 |
14 |
4 |
27 |
0 |
| Pearl Crescent |
Phyciodes tharos |
2689 |
141 |
239 |
234 |
239 |
724 |
250 |
162 |
502 |
198 |
| Peck's Skipper |
Polites peckius |
192 |
17 |
5 |
5 |
20 |
19 |
32 |
16 |
63 |
15 |
| Persius Duskywing |
Erynnis persius |
20 |
3 |
5 |
2 |
9 |
0 |
1 |
0 |
0 |
0 |
| Purplish Copper |
Lycaena helloides |
27 |
0 |
0 |
1 |
4 |
9 |
6 |
2 |
4 |
1 |
| Queen Monarch |
Danaus gilippus |
1 |
0 |
0 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
| Question Mark |
Polygonia interrogationis |
88 |
0 |
7 |
2 |
17 |
8 |
8 |
19 |
4 |
23 |
| Red Admiral |
Vanessa atalanta |
168 |
4 |
1 |
15 |
90 |
1 |
34 |
6 |
8 |
9 |
| Red-spotted Purple |
Limenitis arthemis astyanax |
52 |
2 |
2 |
3 |
10 |
9 |
6 |
1 |
6 |
13 |
| Roadside Skipper |
Amblyscirtes vialis |
7 |
5 |
1 |
0 |
0 |
0 |
1 |
0 |
0 |
0 |
| Silver-spotted Skipper |
Epargyreus clarus |
2964 |
114 |
152 |
337 |
256 |
242 |
563 |
90 |
493 |
717 |
| Sleepy Duskywing |
Erynnis brizo |
13 |
3 |
1 |
1 |
2 |
1 |
2 |
3 |
0 |
0 |
| Southern Cloudywing |
Thorybes bathyllus |
184 |
1 |
5 |
24 |
31 |
64 |
35 |
8 |
3 |
13 |
| Spicebush Swallowtail |
Papilio troilus |
1264 |
17 |
58 |
141 |
95 |
132 |
119 |
44 |
247 |
411 |
| Spring Azure |
Celastrina ladon |
103 |
0 |
1 |
5 |
16 |
0 |
8 |
3 |
0 |
70 |
| Striped Hairstreak |
Satyrium liparops |
6 |
1 |
0 |
3 |
0 |
1 |
1 |
0 |
0 |
0 |
| Summer Azure |
Celastrina neglecta |
553 |
28 |
59 |
26 |
33 |
86 |
81 |
102 |
79 |
59 |
| Tawny Edged Skipper |
Polites themistocles |
98 |
8 |
5 |
12 |
11 |
6 |
5 |
4 |
30 |
17 |
| Tawny Emperor |
Asterocampa clyton |
9 |
1 |
0 |
4 |
0 |
0 |
0 |
0 |
3 |
1 |
| Tiger Swallowtail |
Papilio glaucus |
527 |
16 |
18 |
45 |
35 |
66 |
101 |
27 |
69 |
150 |
| Tiger Swallowtail (Black) |
Papilio glaucus |
17 |
1 |
1 |
2 |
0 |
2 |
4 |
0 |
2 |
5 |
| Variegated Fritillary |
Euptoieta claudia |
1 |
0 |
1 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
| Viceroy |
Limenitis archippus |
1031 |
28 |
53 |
89 |
112 |
196 |
108 |
135 |
110 |
200 |
| White Colias |
Colias species |
401 |
3 |
18 |
11 |
20 |
49 |
11 |
96 |
64 |
129 |
| Wild Indigo Duskywing |
Erynnis baptisiae |
340 |
0 |
6 |
31 |
39 |
47 |
44 |
96 |
42 |
35 |
| Wood Nymph |
Cercyonis pegala alope |
187 |
14 |
13 |
12 |
22 |
23 |
35 |
22 |
13 |
33 |
