
| 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 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 14 | 6 | 11 | 5 | 4 | 1 | . | . | |||||
| Lulworth Skipper | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 4 | 1 | 2 | 1 | . | . | |||||
| Large Skipper | . | . | . | . | . | . | . | . | . | 1 | . | 3 | 3 | . | 4 | 2 | 1 | . | . | 1 | . | |||||
| Dingy Skipper | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||
| Large White | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | 6 | 1 | 13 | 6 | 8 | 3 | . | . | |||||
| Small White | . | . | . | . | . | 2 | 2 | . | 3 | 2 | . | 1 | 1 | 2 | 2 | 10 | 45 | 55 | 25 | 23 | . | |||||
| Orange Tip | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | . | . | . | . | . | . | 1 | 2 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | . | 1 | 5 | 2 | 3 | . | 1 | 1 | |||||
| Brown Argus | . | . | . | . | 1 | 8 | 21 | 7 | 4 | 7 | . | 4 | 1 | . | 5 | 26 | 45 | 43 | 50 | 27 | . | |||||
| Common Blue | . | . | . | . | . | . | . | 3 | 7 | 9 | 2 | 8 | 2 | 1 | . | 12 | 27 | 32 | 33 | 22 | 3 | |||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 24 | 83 | 84 | 19 | 26 | 5 | . | |||||
| Adonis Blue | . | . | . | . | . | . | . | 6 | 1 | 2 | 1 | 2 | . | . | . | . | . | . | 5 | 7 | 1 | |||||
| Holly Blue | 2 | . | . | 1 | 1 | . | 1 | . | . | . | . | . | . | . | 2 | 1 | 1 | 1 | 3 | . | . | |||||
| Red Admiral | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | 1 | . | . | 1 | |||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | |||||
| Small Tortoiseshell | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | 2 | . | 1 | . | 2 | 2 | 6 | |||||
| Peacock | 1 | 3 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | 2 | 3 | 3 | 5 | 3 | . | . | |||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 11 | 7 | 7 | 5 | 4 | . | . | |||||
| Speckled Wood | . | . | . | 1 | . | . | . | 5 | 4 | 1 | 3 | 4 | 2 | 2 | 2 | 4 | 2 | 13 | 27 | 30 | 15 | |||||
| Wall Brown | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | 10 | 4 | 6 | 2 | . | |||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 33 | 91 | 39 | 10 | 13 | 3 | 3 | . | |||||
| Grayling | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 2 | 4 | 4 | 7 | 9 | . | 3 | . | |||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 88 | 159 | 123 | 44 | 20 | . | . | |||||
| Meadow Brown | . | . | . | . | . | . | . | . | . | . | 2 | 11 | 37 | 45 | 80 | 88 | 96 | 51 | 38 | 19 | . | |||||
| Small Heath | . | . | . | . | . | 1 | 3 | 5 | 7 | 11 | 9 | 20 | 24 | 13 | 6 | 4 | 4 | 2 | 5 | 7 | 1 | |||||