
| 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 | . | . | . | . | . | . | . | . | . | 11 | 11 | 26 | 24 | 13 | 12 | 1 | . | . | ||||||||
| Lulworth Skipper | . | . | . | . | . | . | . | . | . | 4 | 21 | 33 | 53 | 42 | 52 | 19 | 11 | . | ||||||||
| Large Skipper | . | . | . | . | . | . | 7 | 7 | 13 | 2 | . | . | . | . | . | . | . | . | ||||||||
| Dingy Skipper | . | . | . | 4 | 12 | 18 | 11 | 7 | 2 | . | . | . | . | . | . | . | . | . | ||||||||
| Pale Clouded Yellow | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 4 | 1 | 1 | . | . | ||||||||
| Brimstone | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||||
| Large White | . | . | 2 | 1 | 2 | 9 | 4 | . | 3 | 11 | 2 | 6 | 8 | 14 | 8 | 6 | 1 | . | ||||||||
| Small White | . | . | 2 | 1 | 3 | 1 | 1 | 1 | . | 1 | 3 | 2 | 5 | 24 | 29 | 4 | . | . | ||||||||
| Green-veined White | . | . | 2 | . | 1 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | ||||||||
| Orange Tip | . | . | 4 | 2 | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | . | 2 | . | 6 | 2 | 12 | 5 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | 1 | 1 | . | . | ||||||||
| Small Blue | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Brown Argus | . | . | . | 2 | . | . | 5 | 3 | 1 | . | . | 2 | 5 | 17 | 22 | 23 | 14 | . | ||||||||
| Common Blue | . | . | . | . | . | . | 6 | 1 | 1 | . | . | 1 | 7 | 33 | 38 | 24 | 6 | . | ||||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | 19 | 56 | 46 | 69 | 30 | 12 | . | . | ||||||||
| Adonis Blue | . | . | . | . | 1 | 8 | 35 | 15 | 6 | . | . | . | . | 2 | 36 | 117 | 74 | 3 | ||||||||
| Holly Blue | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Red Admiral | . | . | . | . | . | . | . | 1 | . | . | 1 | . | 1 | . | 5 | . | 3 | 2 | ||||||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | ||||||||
| Small Tortoiseshell | 2 | 1 | . | 1 | . | . | . | . | 1 | 4 | 7 | 2 | 2 | 2 | 3 | 3 | 2 | 1 | ||||||||
| Peacock | . | 1 | 1 | . | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | 1 | 3 | 1 | 2 | 1 | 1 | . | . | . | ||||||||
| Speckled Wood | . | 4 | . | 3 | 3 | 6 | 16 | 10 | 1 | 1 | 2 | 8 | 9 | 16 | 31 | 41 | 21 | 4 | ||||||||
| Wall Brown | . | . | . | 7 | 7 | 1 | 1 | . | . | . | . | 2 | 1 | 11 | 18 | 1 | 2 | . | ||||||||
| Marbled White | . | . | . | . | . | . | . | . | . | 23 | 28 | 24 | 23 | 14 | 15 | 1 | . | . | ||||||||
| Grayling | . | . | . | . | . | . | . | . | . | . | 3 | 3 | 12 | 14 | 17 | 2 | . | . | ||||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | 25 | 73 | 123 | 115 | 91 | 92 | 18 | . | . | ||||||||
| Meadow Brown | . | . | . | . | . | . | 1 | 6 | 11 | 50 | 167 | 248 | 372 | 372 | 283 | 147 | 64 | 3 | ||||||||
| Small Heath | . | . | . | . | . | 2 | 9 | 9 | 6 | 1 | 2 | . | 3 | 3 | 5 | 1 | 1 | . | ||||||||