
| 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 | . | . | . | . | . | . | . | . | . | 43 | 51 | 71 | 73 | 50 | 31 | 13 | 5 | . | . | . | . | |||||
| Large Skipper | . | . | . | . | . | . | 2 | 9 | 25 | 11 | 29 | 23 | 17 | 5 | 5 | . | 2 | . | . | . | . | |||||
| Dingy Skipper | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Grizzled Skipper | . | . | . | . | . | . | 1 | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Wood White | . | . | . | . | . | 1 | 9 | . | 4 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 5 | 5 | 5 | 1 | 1 | . | . | . | |||||
| Brimstone | 12 | 3 | . | 1 | . | 2 | 1 | . | . | . | . | 1 | . | 9 | . | 5 | . | 3 | 2 | 6 | 2 | |||||
| Large White | . | . | . | . | 1 | . | 1 | . | . | . | . | 2 | 3 | 12 | . | . | 1 | 1 | . | . | . | |||||
| Small White | . | . | . | . | . | . | . | . | . | . | . | 3 | 15 | 42 | 9 | 13 | 6 | 1 | 5 | 1 | . | |||||
| Green-veined White | . | . | . | 4 | . | 1 | 2 | . | . | . | . | . | 24 | 2 | 12 | . | 1 | . | . | . | . | |||||
| Orange Tip | . | . | 5 | 1 | 4 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brown Hairstreak | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | . | . | . | . | |||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | 1 | 1 | . | . | . | . | |||||
| Brown Argus | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 2 | 1 | . | . | . | . | . | |||||
| Common Blue | . | . | . | . | . | 6 | 21 | 19 | 12 | 3 | . | . | 23 | 28 | 94 | 101 | 49 | 18 | 9 | 3 | 1 | |||||
| Holly Blue | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | |||||
| White Admiral | . | . | . | . | . | . | . | . | . | . | 12 | 4 | 6 | . | . | 1 | . | . | . | . | . | |||||
| Red Admiral | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | 1 | 9 | 3 | 5 | . | 1 | . | . | |||||
| Painted Lady | . | . | . | . | . | . | 9 | 11 | 5 | 2 | 5 | 1 | 67 | 27 | 30 | 2 | 6 | 1 | . | . | . | |||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | 3 | 4 | 5 | 4 | 1 | 1 | 1 | 11 | 5 | 10 | 8 | 5 | |||||
| Peacock | 6 | 16 | 2 | 2 | 3 | . | . | . | . | . | . | . | 31 | 24 | 70 | 14 | 8 | 3 | 5 | 1 | 1 | |||||
| Comma | 3 | 6 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | 1 | 8 | 13 | 31 | |||||
| Speckled Wood | . | . | . | 1 | 3 | 8 | 1 | 5 | 5 | 1 | 2 | . | . | 1 | 3 | 4 | 10 | 26 | 26 | 19 | 8 | |||||
| Marbled White | . | . | . | . | . | . | . | . | . | 3 | 39 | 45 | 9 | 7 | 3 | . | . | . | . | . | . | |||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | 1 | 11 | 93 | 50 | 73 | 9 | 6 | . | . | . | . | |||||
| Meadow Brown | . | . | . | . | . | . | . | . | 6 | 5 | 64 | 59 | 31 | 23 | 17 | 5 | 2 | . | 1 | . | . | |||||
| Ringlet | . | . | . | . | . | . | . | . | . | . | 72 | 113 | 98 | 42 | 38 | 13 | 1 | . | . | . | . | |||||