
| 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 | ||||||||||||||||||||||||||
| Large Skipper | 21 | . | . | . | . | . | . | . | . | . | . | 4 | 9 | 5 | 1 | 2 | . | . | . | . | . | . | . | . | |||
| Dingy Skipper | 4 | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Brimstone | 59 | . | 2 | 2 | 4 | 2 | . | 6 | 1 | 2 | . | . | . | . | . | . | 1 | 11 | 15 | 2 | 3 | . | . | . | |||
| Large White | 30 | . | . | . | . | . | 1 | 1 | . | 1 | . | . | 1 | . | 1 | 2 | 5 | 6 | 2 | 2 | 2 | 1 | 1 | 1 | |||
| Small White | 31 | . | . | . | . | . | . | . | . | . | 1 | . | . | 3 | . | . | . | 4 | 5 | 5 | . | 1 | 4 | 1 | |||
| Green-veined White | 30 | . | 1 | 2 | 3 | 2 | 4 | 1 | . | 1 | . | . | . | 1 | 3 | . | 1 | 3 | 1 | 2 | 2 | 1 | . | . | |||
| Orange Tip | 4 | . | . | . | . | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Northern Brown Argus | 72 | . | . | . | . | . | . | . | . | 1 | 2 | 11 | 19 | 17 | 15 | 2 | 5 | . | . | . | . | . | . | . | |||
| Common Blue | 34 | . | . | . | . | . | . | . | 2 | 2 | 3 | 3 | 3 | . | 1 | 1 | . | 2 | 4 | 5 | 3 | 1 | . | . | |||
| Holly Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||
| Red Admiral | 35 | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 2 | 2 | 3 | . | 1 | 3 | 3 | 10 | 2 | |||
| Painted Lady | 90 | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | 1 | 2 | 2 | . | 23 | 17 | 6 | 6 | 4 | . | |||
| Small Tortoiseshell | 19 | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 1 | 1 | . | . | . | 6 | 2 | 2 | . | . | |||
| Peacock | 117 | 2 | 4 | 4 | 7 | 4 | 2 | 4 | 2 | . | . | . | . | . | . | . | . | 29 | 29 | 10 | . | . | . | . | |||
| Comma | 24 | . | . | . | 3 | . | . | . | . | 1 | . | . | . | . | 3 | 2 | . | . | 1 | 1 | 1 | 3 | 3 | 2 | |||
| Small Pearl-bordered Fritillary | 9 | . | . | . | . | . | . | . | . | 3 | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||
| Pearl-bordered Fritillary | 32 | . | . | . | . | 5 | 6 | 9 | 9 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||
| High Brown Fritillary | 122 | . | . | . | . | . | . | . | . | . | . | . | 22 | 36 | 17 | 17 | 13 | 6 | 5 | 2 | . | . | . | . | |||
| Dark Green Fritillary | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | |||
| Speckled Wood | 357 | . | 1 | 1 | 1 | 1 | . | . | . | 2 | 14 | 9 | 19 | 28 | 16 | 5 | 3 | 2 | 13 | 13 | 26 | 59 | 48 | 29 | |||
| Wall Brown | 27 | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | 1 | . | 3 | 10 | 4 | . | . | . | |||
| Grayling | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | |||
| Meadow Brown | 433 | . | . | . | . | . | . | . | . | . | . | 2 | 58 | 75 | 78 | 36 | 51 | 55 | 44 | 7 | 1 | . | . | . | |||
| Small Heath | 39 | . | . | . | . | . | 3 | 11 | 11 | 8 | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||