
| 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 | 172 | . | . | . | . | 1 | 6 | 9 | 9 | 46 | 55 | 30 | 10 | 5 | 1 | . | . | . | . | ||||||||
| Large Skipper | 63 | . | . | . | . | . | 4 | 5 | 1 | 17 | 22 | 7 | 4 | 1 | 1 | . | . | . | . | ||||||||
| Clouded Yellow | 7 | . | . | . | . | . | . | 3 | . | . | 1 | . | . | . | . | 2 | . | . | 1 | ||||||||
| Brimstone | 54 | 7 | 9 | 7 | 1 | . | . | . | . | . | . | . | 2 | 6 | 2 | 2 | . | . | . | ||||||||
| Large White | 93 | . | . | 2 | 2 | . | . | . | . | 2 | 5 | 7 | 18 | 22 | 5 | 9 | 1 | 5 | . | ||||||||
| Small White | 10 | . | . | . | . | 2 | . | . | . | . | 1 | . | 1 | 1 | 1 | 1 | 1 | . | . | ||||||||
| Green-veined White | 43 | . | 4 | 1 | 1 | . | . | . | . | . | . | 7 | 5 | 18 | 1 | 2 | . | 1 | . | ||||||||
| Orange Tip | 4 | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | 7 | . | 1 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 86 | 2 | 4 | 9 | 1 | 1 | . | . | . | 2 | . | 11 | 7 | 10 | 4 | 2 | 2 | 2 | 11 | ||||||||
| Silver-studded Blue | 195 | . | . | . | 8 | 8 | 15 | 15 | 17 | 48 | 35 | 13 | 10 | 7 | 7 | 1 | 1 | . | 1 | ||||||||
| Brown Argus | 132 | . | . | . | 3 | 3 | . | . | . | . | . | . | 3 | 7 | 6 | 6 | 2 | . | 2 | ||||||||
| Common Blue | NI | . | . | . | 24 | 14 | 2 | 2 | . | . | 1 | 1 | 24 | 29 | 7 | 9 | 1 | 3 | 1 | ||||||||
| Holly Blue | . | . | . | . | 1 | 2 | . | . | . | . | . | 1 | 1 | 5 | 1 | . | . | . | . | ||||||||
| Red Admiral | 1 | . | . | . | . | . | 1 | 1 | . | . | 2 | . | 1 | . | . | 3 | 2 | 2 | . | ||||||||
| Painted Lady | 32 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||||||
| Small Tortoiseshell | 60 | 1 | 4 | 3 | . | . | . | 1 | . | 1 | 3 | . | 4 | 1 | 1 | . | . | . | . | ||||||||
| Peacock | 5 | 5 | 5 | 7 | 1 | . | . | . | . | . | 1 | 1 | 8 | 3 | 1 | 1 | 1 | 2 | 1 | ||||||||
| Comma | . | 1 | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | . | ||||||||
| Speckled Wood | 29 | . | 5 | 2 | 1 | 3 | 1 | . | . | . | . | . | 2 | 1 | 2 | 3 | 1 | . | . | ||||||||
| Marbled White | 2 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | ||||||||
| Grayling | 1355 | . | . | . | . | . | . | . | . | . | 17 | 135 | 237 | 349 | 204 | 177 | 27 | 6 | 2 | ||||||||
| Gatekeeper / Hedge Brown | 1105 | . | . | . | . | . | 1 | . | 1 | 2 | 28 | 242 | 343 | 290 | 117 | 39 | 2 | . | . | ||||||||
| Meadow Brown | 1359 | . | . | . | . | . | 19 | 33 | 41 | 84 | 145 | 187 | 242 | 302 | 132 | 77 | 8 | 4 | . | ||||||||
| Small Heath | 440 | . | . | . | 2 | 12 | 47 | 51 | 33 | 76 | 85 | 43 | 30 | 22 | 7 | 5 | 1 | . | 1 | ||||||||