
| APR | MAY | JUN | JUL | AUG | SEP | ||||||||||||||||||||||
| Week no. | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | |
| Site | Ind | ||||||||||||||||||||||||||
| Dingy Skipper | 24 | . | . | 6 | 3 | 9 | 5 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 9 | . | 3 | . | 2 | . | 4 | . | 1 | . | . | . | . | . | . | . | . | . | |||||||||
| Wood White | 18 | . | . | . | 1 | 3 | 5 | 4 | 4 | . | 1 | 1 | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 5 | 1 | . | 1 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Brown Argus | 4 | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Common Blue | 68 | . | . | 1 | 5 | 15 | 13 | 5 | 5 | 3 | 3 | . | . | 6 | 2 | 4 | 1 | 1 | |||||||||
| Holly Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | |||||||||
| Duke of Burgundy Fritillary | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Pearl-bordered Fritillary | 33 | . | . | . | . | 6 | 9 | 7 | 3 | 4 | . | . | . | . | . | . | . | . | |||||||||
| Pearl-bordered Fritillary | 4 | . | . | . | . | 1 | 3 | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | 1 | . | 2 | . | . | . | . | . | . | |||||||||
| Silver-washed Fritillary | 7 | . | . | . | . | . | . | . | . | 1 | 2 | 1 | 2 | . | . | . | . | . | |||||||||
| Marsh Fritillary | 20 | . | . | 2 | 2 | 9 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||||