Annual Butterfly Count, Manassas Circle
 This count is part of a national program led by the North American Butterfly Association (NABA), which compiles information about butterfly populations and distribution that is used to study effects of climate and habitat change on North American butterflies.
Every year we form teams and see how many butterflies we can find within our count circle. We submit our compile results to NABA's national database for butterflies. We are also seeking tips on specific areas to survey - please contact us at alliance@pwconserve.org if you have suggestions.
The Massas Circle of the Annual Butterfly Count covers 113,000 acres centered on Manassas Airport. To view our survey area on Google Earth, use the coordinates 38.724270, -77.500466 as the center point for a circle with a 7.5 mile radius.
|
July 18 2021 |
July 19 2020 |
July 20 2019 |
July 28 2018 |
August 6 2017 |
| Species |
|
|
|
|
|
| PAPILIONIDAES, Swallowtails |
|
|
|
|
|
| Pipevine Swallowtail |
4 |
6 |
4 |
3 |
13 |
| Zebra Swallowtail |
8 |
1 |
4 |
22 |
2 |
| Black Swallowtail |
7 |
2 |
4 |
1 |
8 |
| Giant Swallowtail |
0 |
0 |
0 |
0 |
0 |
| Eastern Tiger Swallowtail |
27 |
6 |
177 |
40 |
33 |
| Spicebush Swallowtail |
3 |
0 |
9 |
1 |
17 |
| PIERIDAE, Whites & Sulphurs |
|
|
|
|
|
| Checkered White |
0 |
0 |
0 |
0 |
0 |
| Cabbage White |
96 |
75 |
92 |
99 |
60 |
| Clouded Sulphur |
2 |
7 |
32 |
6 |
5 |
| Orange Sulphur |
17 |
43 |
9 |
27 |
10 |
| Cloudless Sulphur |
0 |
1 |
3 |
0 |
6 |
| Little Yellow |
0 |
0 |
0 |
0 |
0 |
| Sleepy Orange |
5 |
3 |
19 |
1 |
6 |
| LYCAENIDAE, Harvesters and Coppers |
|
|
|
|
|
| Harvester |
0 |
0 |
0 |
0 |
0 |
| American Copper |
0 |
0 |
0 |
0 |
0 |
| Juniper Hairstreak |
5 |
2 |
2 |
1 |
1 |
| White M Hairstreak |
0 |
0 |
0 |
0 |
0 |
| Gray Hairstreak |
2 |
8 |
8 |
3 |
3 |
| Red-banded Hairstreak |
2 |
0 |
7 |
3 |
9 |
| LYCAENIDAE, Blues |
|
|
|
|
|
| Eastern-tailed Blue |
113 |
135 |
108 |
93 |
55 |
| Summer Azure |
1 |
3 |
4 |
4 |
10 |
| NYMPHALIDAE, Brushfoots |
|
|
|
|
|
| American Snout |
3 |
0 |
2 |
8 |
1 |
| Variegated Fritillary |
9 |
0 |
13 |
4 |
5 |
| Great Spangled Fritillary |
2 |
2 |
8 |
13 |
4 |
| Meadow Fritillary |
0 |
0 |
0 |
1 |
0 |
| Silvery Checkerspot |
0 |
43 |
123 |
59 |
4 |
| Pearl Crescent |
59 |
47 |
92 |
62 |
42 |
| Question Mark |
5 |
0 |
1 |
1 |
0 |
| Eastern Comma |
3 |
0 |
4 |
0 |
3 |
| Mourning Cloak |
0 |
0 |
0 |
0 |
0 |
| American Lady |
4 |
1 |
1 |
3 |
1 |
| Painted Lady |
1 |
0 |
3 |
2 |
6 |
| Red Admiral |
2 |
2 |
18 |
8 |
5 |
| Common Buckeye |
1 |
18 |
29 |
1 |
16 |
| Red-spotted Purple |
10 |
2 |
19 |
12 |
5 |
| Viceroy |
2 |
0 |
4 |
1 |
6 |
| Hackberry Emperor |
7 |
9 |
6 |
21 |
14 |
| Tawny Emperor |
1 |
0 |
0 |
0 |
0 |
| NYMPHALIDAE, Satyrs |
|
|
|
|
|
| Northern Pearly Eye |
0 |
4 |
3 |
0 |
20 |
| Appalachian Brown |
0 |
0 |
0 |
0 |
3 |
| Carolina Satyr |
0 |
1 |
0 |
0 |
1 |
| Little Wood Satyr |
1 |
3 |
0 |
0 |
0 |
| Common Wood Nymph |
1 |
0 |
5 |
6 |
14 |
| NYMPHALIDAE, Milkweed Butterflies |
|
|
|
|
|
| Monarch |
9 |
10 |
9 |
38 |
23 |
| HESPERIIDAE, Spread-wing Skippers |
|
|
|
|
|
| Silver-spotted Skipper |
13 |
3 |
35 |
36 |
48 |
| Long-tailed Skipper |
0 |
0 |
0 |
0 |
0 |
| Southern Cloudywing |
1 |
1 |
0 |
3 |
7 |
| Northern Cloudywing |
0 |
0 |
0 |
0 |
0 |
| Horace's Duskywing |
6 |
2 |
5 |
10 |
13 |
| Wild Indigo Duskywing |
5 |
1 |
0 |
9 |
2 |
| Common Checkered Skipper |
0 |
0 |
0 |
1 |
0 |
| Common Sootywing |
0 |
0 |
1 |
0 |
3 |
| HESPERIIDAE - Grass-Skippers |
|
|
|
|
|
| Swarthy Skipper |
0 |
1 |
0 |
2 |
2 |
| Clouded Skipper |
0 |
0 |
2 |
0 |
0 |
| Least Skipper |
53 |
52 |
34 |
19 |
6 |
| European Skipper |
0 |
0 |
0 |
0 |
0 |
| Fiery Skipper |
0 |
0 |
1 |
0 |
0 |
| Peck's Skipper |
27 |
18 |
59 |
17 |
3 |
| Tawny-edged Skipper |
3 |
2 |
1 |
2 |
1 |
| Crossline Skipper |
1 |
0 |
1 |
6 |
4 |
| Little Glassywing |
0 |
0 |
2 |
1 |
18 |
| Sachem |
266 |
155 |
24 |
16 |
32 |
| Northern Broken Dash |
0 |
0 |
0 |
0 |
4 |
| Southern Broken Dash |
0 |
0 |
0 |
0 |
1 |
| Delaware Skipper |
0 |
0 |
0 |
0 |
0 |
| Hobomok Skipper |
0 |
0 |
0 |
0 |
0 |
| Zabulon Skipper |
2 |
4 |
15 |
13 |
111 |
| Dun Skipper |
0 |
0 |
1 |
4 |
37 |
| Ocola Skipper |
0 |
1 |
0 |
0 |
0 |
| TOTAL INDIVIDUALS |
789 |
674 |
1003 |
683 |
703 |
| TOTAL SPECIES |
41 |
36 |
45 |
44 |
49 |
|
