
| 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 | 40 | . | . | . | . | . | . | . | . | . | . | 9 | 7 | 8 | 5 | 1 | 2 | . | . | . | . | . | . | . | . | . | |
| Dingy Skipper | 10 | . | . | . | . | . | . | 2 | 1 | 1 | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |
| Grizzled Skipper | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
| Brimstone | 89 | 11 | 8 | 3 | . | 16 | 2 | 10 | 2 | 8 | 2 | . | 2 | . | . | . | . | 2 | 11 | 9 | 1 | . | . | 1 | . | . | |
| Large White | 9 | . | . | . | . | . | . | 1 | 1 | . | 2 | . | . | . | . | . | 1 | . | 2 | 2 | . | . | . | . | . | . | |
| Small White | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |
| Green-veined White | 42 | . | . | . | . | 3 | 2 | 5 | 5 | 5 | 4 | . | . | . | . | 3 | 1 | . | 9 | 3 | . | 1 | . | . | 1 | . | |
| Orange Tip | 8 | . | . | . | . | 2 | . | 5 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
| Green Hairstreak | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | |
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |
| Common Blue | 5 | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | |
| Holly Blue | NI | . | . | 2 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | . | . | . | . | |
| Duke of Burgundy Fritillary | 10 | . | . | . | . | . | . | 2 | 5 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |
| Red Admiral | 8 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 6 | |
| Small Tortoiseshell | 14 | 1 | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 1 | 1 | . | 2 | 1 | 2 | . | 1 | |
| Peacock | 133 | 17 | 13 | 23 | 6 | 18 | 6 | 10 | 3 | . | 1 | . | 1 | . | . | . | 1 | 9 | 8 | 13 | . | . | 2 | . | 1 | . | |
| Comma | 15 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | 3 | 8 | |
| Small Pearl-bordered Fritillary | 11 | . | . | . | . | . | . | . | . | . | . | . | 6 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |
| Pearl-bordered Fritillary | 223 | . | . | . | . | . | 3 | 51 | 38 | 36 | 63 | 18 | 9 | . | . | . | . | . | . | . | . | . | . | . | . | . | |
| High Brown Fritillary | 103 | . | . | . | . | . | . | . | . | . | . | . | 2 | 11 | 13 | 20 | 23 | 12 | 10 | 5 | . | . | . | . | . | . | |
| Dark Green Fritillary | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | |
| Speckled Wood | 25 | . | . | 1 | . | . | . | 1 | . | . | . | . | . | . | . | 1 | . | . | 2 | 2 | 2 | 4 | 2 | 4 | 3 | 3 | |
| Wall Brown | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | |
| Meadow Brown | 309 | . | . | . | . | . | . | . | . | . | . | 3 | 4 | 22 | 56 | 65 | 62 | 35 | 36 | 13 | . | . | . | . | . | . | |
| Small Heath | 2 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |