
| 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 | 28 | . | . | . | . | . | . | . | 7 | 9 | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | 3 | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Brimstone | 103 | 3 | 2 | 12 | 3 | 8 | 4 | 3 | 2 | 2 | 1 | 1 | . | . | 10 | 18 | 5 | 4 | 4 | 3 | 2 | . | . | ||||
| Large White | 4 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | 1 | 1 | . | . | . | . | ||||
| Small White | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | ||||
| Green-veined White | 65 | . | 1 | 5 | 6 | 5 | 10 | 4 | 3 | 1 | . | 2 | 4 | 3 | 1 | 9 | 2 | . | . | . | . | . | . | ||||
| Orange Tip | 9 | . | . | 3 | 2 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | ||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||
| Northern Brown Argus | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Holly Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | ||||
| Duke of Burgundy Fritillary | 18 | . | . | 2 | 2 | 8 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 8 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | 1 | 1 | 2 | ||||
| Painted Lady | 4 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | ||||
| Small Tortoiseshell | 7 | 1 | . | . | . | . | . | . | . | 1 | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | ||||
| Peacock | 81 | 6 | 8 | 11 | 7 | 9 | . | 3 | 1 | . | . | . | . | . | 1 | 9 | . | 2 | 2 | 1 | . | . | 3 | ||||
| Comma | 19 | 2 | 4 | 2 | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | 1 | ||||
| Small Pearl-bordered Fritillary | 8 | . | . | . | . | . | . | . | 3 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Pearl-bordered Fritillary | 139 | . | . | . | 2 | 31 | 36 | 39 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| High Brown Fritillary | 108 | . | . | . | . | . | . | . | . | 7 | 16 | 24 | 14 | 13 | 6 | 5 | 3 | 1 | . | . | . | . | . | ||||
| Dark Green Fritillary | 11 | . | . | . | . | . | . | . | 1 | . | 2 | 1 | 2 | 2 | 1 | . | . | . | . | . | . | . | . | ||||
| Speckled Wood | 182 | . | 1 | 3 | 1 | 3 | 2 | 1 | 10 | 10 | 4 | 5 | 3 | 3 | 1 | 10 | 16 | 17 | 21 | 9 | 18 | 14 | 16 | ||||
| Wall Brown | 23 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 6 | 6 | 6 | . | . | . | . | ||||
| Meadow Brown | 184 | . | . | . | . | . | . | . | 3 | 10 | 11 | 26 | 39 | 33 | 25 | 9 | . | 1 | 1 | . | . | . | . | ||||