
| 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 | 45 | . | . | . | . | . | . | 1 | 1 | 11 | 66 | 9 | 10 | 6 | 4 | . | . | . | . | . | . | ||||||
| Large Skipper | 65 | . | . | . | . | . | . | 2 | 11 | 9 | 18 | 7 | 3 | 2 | 1 | . | . | . | . | . | . | ||||||
| Dingy Skipper | 7 | . | . | . | . | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||
| Brimstone | 35 | 5 | 4 | 8 | 3 | 3 | . | . | . | . | . | . | 2 | 1 | 4 | . | . | . | . | 1 | . | ||||||
| Large White | 49 | . | . | . | . | 1 | 1 | . | . | . | . | 6 | 3 | 6 | 11 | 5 | 4 | 3 | . | 3 | . | ||||||
| Small White | 72 | . | . | . | 6 | 2 | 2 | . | . | . | . | 2 | 3 | 9 | 22 | 8 | 4 | 1 | 4 | 3 | 1 | ||||||
| Green-veined White | 20 | . | . | . | 2 | . | 1 | 1 | 1 | . | 2 | . | 1 | 1 | 2 | 2 | 2 | 1 | 2 | 1 | . | ||||||
| Orange Tip | 7 | . | 2 | . | 2 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Green Hairstreak | 9 | . | . | . | . | 2 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 55 | . | . | . | . | 1 | . | 1 | . | . | 2 | 3 | 2 | 5 | 5 | 2 | 10 | 2 | 1 | 3 | 13 | ||||||
| Silver-studded Blue | 1569 | . | . | . | . | 3 | 2 | 28 | 246 | 391 | 485 | 46 | 32 | 15 | 16 | 14 | 14 | 3 | 2 | 2 | . | ||||||
| Common Blue | 119 | . | . | . | . | 6 | 8 | 9 | 5 | 2 | 2 | 3 | 2 | 7 | 20 | 5 | 25 | 3 | 1 | 6 | 4 | ||||||
| Holly Blue | 3 | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | 1 | . | . | . | . | . | . | ||||||
| Red Admiral | 20 | . | . | . | . | . | . | . | . | . | . | 4 | 1 | . | 2 | 1 | 2 | 1 | 2 | 2 | 3 | ||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Small Tortoiseshell | 98 | 4 | 2 | 1 | . | . | . | 1 | 5 | 4 | 3 | 2 | 1 | 2 | 3 | 3 | 34 | 12 | 8 | 7 | 4 | ||||||
| Peacock | 84 | 21 | 16 | 4 | 2 | . | . | . | . | . | . | 4 | 9 | 13 | 5 | 1 | 1 | 2 | . | 2 | 2 | ||||||
| Comma | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | 1 | . | . | ||||||
| Speckled Wood | 6 | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||||
| Marbled White | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | ||||||
| Grayling | 1128 | . | . | . | . | . | . | . | 1 | . | 21 | 95 | 126 | 159 | 286 | 181 | 136 | 36 | 14 | 14 | 1 | ||||||
| Gatekeeper / Hedge Brown | 197 | . | . | . | . | . | . | . | . | . | 1 | 25 | 26 | 37 | 35 | 23 | 32 | 5 | . | . | . | ||||||
| Meadow Brown | 528 | . | . | . | . | . | . | 1 | 12 | 11 | 86 | 76 | 50 | 90 | 56 | 37 | 18 | 7 | 2 | 1 | . | ||||||
| Small Heath | 561 | . | . | . | . | 15 | 18 | 29 | 81 | 98 | 107 | 21 | 16 | 26 | 18 | 8 | 14 | 13 | 4 | 8 | 1 | ||||||