
| 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 | ||||||||||||||||||||||||||
| Large Skipper | . | . | . | . | . | . | . | . | . | 2 | 6 | 2 | . | 2 | . | . | . | . | . | . | . | . | . | |||
| Dingy Skipper | . | . | . | . | . | . | 6 | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brimstone | . | . | 4 | 6 | . | 10 | . | 4 | . | . | . | . | . | . | . | 6 | 2 | 2 | . | . | . | . | . | |||
| Large White | . | . | . | . | . | . | . | . | . | . | . | 2 | 6 | 4 | . | 2 | 10 | . | . | 2 | 2 | . | . | |||
| Small White | . | . | . | 6 | . | 2 | . | . | . | . | 4 | 2 | . | . | . | . | . | 2 | . | 2 | . | . | . | |||
| Green-veined White | . | . | 4 | 2 | 2 | . | . | . | . | . | 6 | . | . | 4 | . | . | . | . | . | . | . | . | . | |||
| Northern Brown Argus | . | . | . | . | . | . | . | . | 2 | 6 | 24 | 2 | . | . | . | . | . | . | . | . | . | . | . | |||
| Common Blue | . | . | . | . | . | . | 4 | 6 | 8 | . | 18 | . | 8 | . | . | . | 12 | 12 | 10 | 8 | 2 | . | . | |||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | 2 | 4 | 4 | 2 | |||
| Painted Lady | . | . | . | . | . | . | . | . | . | 8 | 12 | 2 | 2 | . | 2 | . | 2 | 4 | 6 | 2 | 6 | 6 | . | |||
| Small Tortoiseshell | 8 | . | 6 | 14 | . | . | . | . | . | 6 | 8 | . | 2 | . | . | . | . | . | 2 | 2 | 2 | 6 | 2 | |||
| Peacock | 6 | . | 2 | 4 | . | 2 | . | . | . | . | . | . | . | . | . | . | 4 | . | 2 | 2 | 2 | . | 2 | |||
| Comma | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | . | . | |||
| Small Pearl-bordered Fritillary | . | . | . | . | . | . | . | 2 | 4 | 4 | 12 | . | . | 10 | . | . | . | . | . | . | . | . | . | |||
| Pearl-bordered Fritillary | . | . | . | . | 2 | 12 | 4 | 6 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| High Brown Fritillary | . | . | . | . | . | . | . | . | 6 | 100 | 358 | 244 | 150 | 166 | 30 | 28 | 12 | 6 | . | . | . | . | . | |||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | 4 | 56 | 24 | 36 | 26 | 4 | 6 | 4 | . | . | . | . | . | . | |||
| Speckled Wood | 2 | . | 10 | 36 | 16 | 4 | 6 | 10 | 26 | 44 | 62 | 16 | 12 | 14 | 2 | 6 | . | 14 | 42 | 78 | 128 | 170 | 134 | |||
| Wall Brown | . | . | . | . | . | 8 | . | . | . | . | . | . | . | . | . | . | . | 12 | 6 | 4 | . | 2 | . | |||
| Scotch Argus | . | . | . | . | . | . | . | . | . | . | . | . | 12 | 6 | 642 | 828 | 362 | 130 | 26 | . | 2 | . | . | |||
| Grayling | . | . | . | . | . | . | . | . | . | . | 18 | 26 | 28 | 8 | 14 | 38 | 30 | 4 | . | . | . | . | . | |||
| Meadow Brown | . | . | . | . | . | . | . | . | . | 32 | 98 | 172 | 206 | 230 | 68 | 78 | 58 | 20 | 4 | . | . | . | . | |||
| Small Heath | . | . | . | . | . | 14 | 26 | 22 | 20 | 4 | 36 | 4 | 2 | 2 | 2 | . | . | . | . | . | . | . | . | |||