
| 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 | ||||||||||||||||||||||||||
| Small Skipper | NI | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 1 | 1 | 4 | . | . | . | . | . | ||||||
| Lulworth Skipper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||||
| Large Skipper | 7 | . | . | . | . | . | . | . | . | 2 | 2 | 2 | . | 1 | . | . | . | . | . | . | . | ||||||
| Dingy Skipper | 42 | . | . | . | 2 | 12 | 16 | 10 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | NI | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Large White | NI | . | . | 1 | 1 | 4 | 2 | . | 2 | 4 | 1 | . | 2 | . | 5 | 6 | 2 | 4 | . | 2 | . | ||||||
| Small White | NI | . | . | . | . | 4 | . | . | . | . | . | . | 2 | 1 | 4 | 6 | . | 3 | 41 | 27 | . | ||||||
| Green-veined White | NI | . | . | . | . | 1 | 5 | 1 | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | ||||||
| Orange Tip | 9 | 2 | . | 1 | 1 | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 11 | . | . | . | 1 | 1 | 1 | 4 | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | NI | 1 | . | . | 5 | . | . | . | . | . | . | . | . | 1 | 2 | 6 | . | 1 | 1 | 2 | . | ||||||
| Small Blue | NI | . | . | . | . | 5 | 2 | . | . | . | . | 2 | . | . | . | . | 1 | . | . | . | . | ||||||
| Brown Argus | NI | . | . | . | . | 3 | 12 | . | 2 | . | . | . | . | . | 5 | 1 | 3 | 3 | 3 | 1 | . | ||||||
| Common Blue | NI | . | . | . | . | 2 | 41 | 18 | 9 | 7 | 2 | 2 | 2 | 1 | 11 | 21 | 7 | 6 | 2 | 1 | . | ||||||
| Chalk-hill Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 8 | 14 | . | . | . | . | . | ||||||
| Adonis Blue | 326 | . | . | . | . | 2 | 16 | 10 | 1 | 2 | 2 | . | . | . | . | . | 82 | 75 | 47 | 32 | . | ||||||
| Holly Blue | NI | . | . | . | 1 | 1 | 2 | . | 1 | . | . | . | . | . | 4 | . | . | . | . | 1 | . | ||||||
| Red Admiral | 20 | 1 | . | . | . | . | . | . | . | 1 | 1 | 2 | . | . | . | 1 | . | 3 | 5 | . | 3 | ||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | ||||||
| Small Tortoiseshell | 5 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | 2 | . | . | . | . | . | ||||||
| Peacock | 3 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 181 | 15 | 11 | 4 | 9 | 5 | 11 | 16 | 15 | 13 | 3 | . | . | 2 | 17 | 5 | 8 | 15 | 13 | 6 | 2 | ||||||
| Wall Brown | NI | . | . | . | 4 | . | 3 | . | . | . | . | . | . | . | 6 | 16 | 1 | 2 | . | . | . | ||||||
| Marbled White | 48 | . | . | . | . | . | . | . | . | . | 4 | 11 | 9 | 9 | 9 | 4 | . | . | . | . | . | ||||||
| Grayling | 36 | . | . | . | . | . | . | . | . | . | . | 2 | 5 | 3 | 12 | 9 | . | . | . | . | . | ||||||
| Gatekeeper / Hedge Brown | 259 | . | . | . | . | . | . | . | . | . | . | 2 | 6 | 24 | 59 | 78 | 3 | . | . | . | . | ||||||
| Meadow Brown | 605 | . | . | . | . | . | . | . | 1 | 21 | 73 | 67 | 39 | 51 | 60 | 86 | 39 | 34 | 2 | 4 | . | ||||||
| Small Heath | 180 | . | . | . | 2 | 2 | 6 | 14 | 8 | 23 | 14 | 11 | 20 | 9 | 3 | . | 3 | 14 | 11 | 25 | . | ||||||
| Ringlet | 6 | . | . | . | . | . | . | . | . | . | . | . | 3 | 2 | 1 | . | . | . | . | . | . | ||||||