
| 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 | . | . | . | . | . | . | . | . | . | . | . | 2 | 16 | 11 | 6 | 6 | 1 | . | . | . | . | . | ||||
| Lulworth Skipper | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 6 | 9 | 19 | 1 | 2 | . | . | . | . | ||||
| Large Skipper | . | . | . | . | . | . | . | . | . | . | . | 2 | 5 | 3 | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | . | . | . | . | . | . | 5 | 9 | 7 | 5 | 3 | . | . | . | . | . | . | 1 | . | . | . | . | ||||
| Berger's Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||
| Clouded Yellow | . | . | . | . | . | . | . | 2 | . | . | . | . | 2 | 2 | 10 | 37 | 18 | 8 | 9 | 5 | 5 | 8 | ||||
| Brimstone | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||
| Large White | . | . | . | . | 1 | 3 | 2 | 1 | 1 | 3 | 2 | 2 | 2 | 3 | 2 | 13 | 16 | 5 | . | . | . | . | ||||
| Small White | . | . | . | . | . | . | 2 | . | . | 2 | 1 | 2 | 2 | 3 | 1 | 20 | 20 | 10 | 8 | 2 | 1 | 1 | ||||
| Green-veined White | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | 1 | 1 | . | 1 | . | . | . | ||||
| Orange Tip | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | . | . | . | . | 3 | 5 | 15 | 5 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 3 | 7 | 1 | 2 | . | 1 | 7 | ||||
| Small Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||
| Brown Argus | . | . | . | . | . | . | 2 | 8 | 2 | 4 | 2 | . | . | . | 20 | 37 | 9 | 25 | 34 | 30 | . | . | ||||
| Common Blue | . | . | . | . | . | . | 3 | 4 | 9 | 15 | 7 | 1 | . | . | 18 | 71 | 31 | 89 | 78 | 25 | 2 | . | ||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 4 | 30 | 9 | 4 | 2 | 1 | . | . | ||||
| Adonis Blue | . | . | . | . | . | . | . | 24 | 52 | 57 | 20 | 3 | . | . | . | 4 | 9 | 246 | 333 | 249 | 23 | 6 | ||||
| Holly Blue | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 4 | . | 2 | . | . | . | . | ||||
| Red Admiral | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | ||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | . | . | . | . | . | ||||
| Small Tortoiseshell | 1 | 4 | . | 1 | 1 | 1 | . | . | . | . | . | 1 | 8 | 3 | . | . | . | . | 1 | 3 | . | . | ||||
| Peacock | 1 | . | 1 | . | . | . | . | . | . | . | . | . | 2 | 2 | 2 | 4 | . | . | . | . | . | . | ||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | 2 | ||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | 1 | . | . | . | . | . | ||||
| Speckled Wood | . | 2 | 3 | . | 1 | 2 | 1 | 11 | 10 | 10 | 19 | 7 | 1 | 1 | 7 | 8 | 20 | 21 | 40 | 17 | 2 | . | ||||
| Wall Brown | . | . | . | . | . | . | 2 | 5 | . | 1 | . | . | . | . | 3 | 12 | 12 | 8 | 13 | . | . | . | ||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | . | 14 | 102 | 85 | 73 | 11 | 10 | 3 | . | . | . | . | ||||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | . | 10 | 18 | 15 | 18 | 4 | 3 | 1 | . | . | . | ||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | . | 54 | 126 | 134 | 94 | 71 | 30 | 2 | 1 | . | . | ||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | . | 6 | 25 | 119 | 159 | 191 | 238 | 157 | 170 | 138 | 59 | 3 | 3 | ||||
| Small Heath | . | . | . | . | . | . | . | . | 3 | 3 | 5 | 11 | 3 | 5 | 1 | . | 3 | 8 | 13 | 7 | . | 1 | ||||