
| 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 | ||||||||||||||||||||||||||
| Small Skipper | . | . | . | . | . | . | . | . | . | 16 | 17 | 49 | 16 | 9 | 2 | . | . | . | . | . | ||||||
| Lulworth Skipper | . | . | . | . | . | . | . | . | . | 5 | 5 | 21 | 12 | 21 | 24 | 9 | 1 | . | 3 | 1 | ||||||
| Large Skipper | . | . | . | . | . | . | 4 | 13 | 7 | 12 | 11 | 13 | 1 | 1 | 1 | . | . | . | . | . | ||||||
| Dingy Skipper | . | . | 18 | 23 | 32 | 21 | 11 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||
| Brimstone | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||||
| Large White | 1 | 2 | 5 | 4 | 7 | 3 | 1 | 7 | 6 | 5 | 1 | 1 | 5 | 16 | 8 | 10 | 2 | . | 1 | . | ||||||
| Small White | 2 | . | . | 4 | 2 | 1 | 1 | 2 | 1 | . | . | . | 8 | 6 | 15 | 13 | . | 1 | 2 | 2 | ||||||
| Green-veined White | . | 1 | 1 | . | . | . | . | 1 | . | . | . | . | 2 | 3 | 3 | . | . | 3 | . | . | ||||||
| Orange Tip | . | . | . | . | . | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 2 | 2 | 9 | 14 | 20 | 11 | 8 | 4 | 3 | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | . | . | 1 | . | 1 | . | . | . | . | . | . | 5 | 1 | 2 | 3 | 3 | 1 | 1 | 2 | 1 | ||||||
| Small Blue | . | . | . | . | . | . | 1 | 2 | . | 2 | . | 1 | . | 2 | . | . | . | . | . | . | ||||||
| Brown Argus | . | . | 9 | 21 | 27 | 25 | 14 | 16 | 5 | . | . | 1 | 3 | 26 | 17 | 26 | 22 | 25 | 22 | 7 | ||||||
| Common Blue | . | . | 1 | 3 | 14 | 9 | 23 | 18 | 7 | . | . | . | 7 | 12 | 39 | 28 | 21 | 21 | 19 | 10 | ||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | 26 | 62 | 35 | 8 | 6 | 3 | 1 | ||||||
| Adonis Blue | . | . | . | 8 | 64 | 79 | 139 | 56 | 24 | 5 | 1 | 1 | 4 | 3 | 1 | 92 | 319 | 348 | 338 | 68 | ||||||
| Holly Blue | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 3 | . | . | . | . | . | ||||||
| Red Admiral | . | . | . | 1 | 1 | . | . | . | 1 | 1 | 2 | 1 | 3 | . | . | . | . | 3 | 1 | 3 | ||||||
| Painted Lady | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Small Tortoiseshell | 4 | 2 | 1 | . | . | . | 1 | 24 | 18 | 23 | 17 | 16 | 7 | . | 8 | 21 | 15 | 16 | 11 | 6 | ||||||
| Peacock | 11 | 2 | 5 | 2 | . | . | . | . | 1 | . | . | . | 1 | 4 | 5 | 1 | . | . | . | . | ||||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | ||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | 2 | 1 | 6 | 6 | 2 | . | . | . | . | . | . | ||||||
| Speckled Wood | 1 | 2 | 9 | 4 | 4 | 6 | 29 | 20 | 22 | 6 | 8 | 4 | 2 | 12 | 13 | 9 | 8 | 15 | 5 | 8 | ||||||
| Wall Brown | . | . | 1 | 4 | 1 | 6 | 2 | . | . | . | . | . | . | 1 | 1 | 2 | . | . | . | . | ||||||
| Marbled White | . | . | . | . | . | . | . | . | 3 | 22 | 33 | 73 | 97 | 35 | 13 | 6 | . | . | . | . | ||||||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 7 | 5 | 2 | 2 | . | 1 | . | ||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | 1 | 9 | 97 | 137 | 199 | 98 | 3 | 2 | . | . | ||||||
| Meadow Brown | . | . | . | . | . | . | . | 11 | 31 | 60 | 73 | 89 | 225 | 283 | 339 | 361 | 209 | 237 | 121 | 34 | ||||||
| Small Heath | . | . | . | 10 | 11 | 13 | 14 | 14 | 12 | 13 | 12 | 4 | 6 | . | 4 | 13 | 10 | 22 | 31 | 12 | ||||||