
| 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 | . | . | . | . | . | . | . | . | . | 10 | 4 | 5 | 2 | . | . | . | . | . | . | |||||||
| Lulworth Skipper | 61 | . | . | . | . | . | . | . | . | . | . | 9 | 12 | 11 | 10 | 5 | 2 | 1 | . | . | |||||||
| Large Skipper | 62 | . | . | . | . | . | 2 | 1 | 17 | 17 | 10 | 4 | . | . | 1 | . | . | . | . | . | |||||||
| Dingy Skipper | 68 | . | . | 1 | 14 | . | 13 | 14 | 3 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Large White | 120 | . | 1 | 5 | 8 | . | 10 | 9 | 6 | 4 | . | 1 | 5 | 17 | 6 | 4 | 7 | 4 | 3 | 1 | |||||||
| Small White | 180 | . | 7 | . | 8 | . | 7 | 6 | 3 | 4 | 4 | 2 | 6 | 13 | 48 | 18 | . | 7 | . | . | |||||||
| Green-veined White | 15 | . | . | 3 | 1 | . | 2 | 2 | 1 | . | . | . | . | . | . | 2 | 1 | . | . | . | |||||||
| Orange Tip | 21 | . | 1 | 2 | 1 | . | 3 | 3 | 3 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 35 | . | 3 | 4 | 7 | . | 8 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 58 | . | 1 | 3 | 1 | . | 3 | 3 | . | . | . | . | 4 | 4 | 9 | 8 | 6 | 1 | 1 | 2 | |||||||
| Small Blue | NI | . | . | . | . | . | 2 | . | 2 | 1 | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Brown Argus | 172 | . | . | 4 | 7 | . | 24 | 18 | 3 | 3 | . | . | 5 | 8 | 15 | 22 | 8 | 9 | . | . | |||||||
| Common Blue | 718 | . | . | . | 1 | . | 96 | 114 | 34 | 6 | 2 | 2 | 6 | 26 | 50 | 70 | 85 | 59 | 11 | 1 | |||||||
| Chalk-hill Blue | 558 | . | . | . | . | . | . | . | . | . | . | 20 | 103 | 125 | 93 | 66 | 37 | 5 | . | . | |||||||
| Adonis Blue | 353 | . | . | . | 2 | . | 26 | 27 | 8 | . | . | . | . | . | 7 | 13 | 79 | 120 | 21 | 10 | |||||||
| Holly Blue | 29 | . | 5 | . | 1 | . | 1 | . | . | . | . | . | 2 | 5 | 4 | 1 | 1 | . | . | . | |||||||
| Red Admiral | 10 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 3 | 1 | |||||||
| Small Tortoiseshell | 109 | 3 | . | . | . | . | 1 | . | 9 | 21 | 5 | 7 | 8 | 5 | 6 | 8 | 3 | 9 | 7 | 4 | |||||||
| Peacock | 70 | 14 | 3 | 1 | 2 | . | 1 | . | . | . | . | 3 | 9 | 13 | 4 | . | 1 | . | . | . | |||||||
| Comma | 8 | 1 | . | . | . | . | . | 1 | . | . | . | 1 | 2 | . | . | 1 | . | . | . | . | |||||||
| Dark Green Fritillary | 32 | . | . | . | . | . | . | . | . | 2 | 1 | 7 | 5 | 10 | 1 | . | . | . | . | . | |||||||
| Speckled Wood | 255 | . | 6 | . | 2 | . | 7 | 11 | 5 | 12 | 5 | 1 | 8 | 15 | 11 | 15 | 32 | 52 | 27 | 17 | |||||||
| Wall Brown | 49 | . | . | . | . | . | 6 | 1 | . | . | . | . | . | 1 | 12 | 7 | 10 | . | . | . | |||||||
| Marbled White | 170 | . | . | . | . | . | . | . | . | 16 | 42 | 33 | 42 | 14 | 5 | 2 | 5 | 1 | . | . | |||||||
| Grayling | 206 | . | . | . | . | . | . | . | . | 2 | 7 | 38 | 59 | 39 | 19 | 13 | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 449 | . | . | . | . | . | . | . | . | 1 | 12 | 72 | 89 | 111 | 48 | 31 | 5 | . | . | . | |||||||
| Meadow Brown | 1311 | . | . | 2 | . | . | . | . | 28 | 49 | 38 | 125 | 195 | 232 | 165 | 116 | 71 | 52 | 23 | 4 | |||||||
| Small Heath | 342 | . | . | . | 5 | . | 44 | 53 | 39 | 35 | 21 | 12 | 3 | 1 | 4 | 4 | 9 | 11 | 7 | 3 | |||||||