
| 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 | ||||||||||||||||||||||||||
| Large Skipper | 16 | . | . | . | . | . | . | . | . | . | . | 2 | 8 | 6 | . | . | . | . | . | . | . | . | . | . | |||
| Large White | 66 | . | . | . | . | . | . | . | 3 | 2 | 2 | 1 | 4 | 7 | 1 | 1 | . | 3 | . | 7 | 27 | . | . | 5 | |||
| Small White | 41 | . | . | . | 2 | . | 2 | 4 | 3 | 1 | . | . | . | 8 | . | . | . | 3 | 6 | 3 | 6 | 1 | . | 1 | |||
| Green-veined White | 9 | . | . | . | . | . | 1 | . | 1 | 1 | . | . | 1 | . | . | . | . | 1 | . | 4 | . | . | . | . | |||
| Small Copper | 105 | . | . | . | . | . | . | . | 2 | 1 | 3 | 7 | 8 | 1 | . | . | . | 2 | 1 | 18 | 16 | 19 | 14 | 4 | |||
| Silver-studded Blue | 58 | . | . | . | . | . | . | . | . | . | . | 5 | 14 | 15 | 1 | 11 | 2 | 4 | . | . | . | . | 4 | . | |||
| Common Blue | 166 | . | . | . | . | . | . | . | 1 | 2 | 2 | 11 | 7 | 9 | . | . | . | 1 | 2 | 25 | 45 | 16 | 26 | 4 | |||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | |||
| Small Tortoiseshell | 18 | 1 | . | . | 1 | 2 | . | . | . | . | . | . | . | 1 | . | 1 | 1 | 1 | 1 | 3 | 2 | . | . | 1 | |||
| Peacock | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | |||
| Small Pearl-bordered Fritillary | 14 | . | . | . | . | . | . | . | . | 1 | . | 1 | 4 | 8 | . | . | . | . | . | . | . | . | . | . | |||
| Dark Green Fritillary | 9 | . | . | . | . | . | . | . | . | . | . | . | . | 8 | . | 1 | . | . | . | . | . | . | . | . | |||
| Wall Brown | 90 | . | . | . | . | . | . | 1 | 9 | 7 | 4 | 3 | . | . | . | . | . | . | . | 2 | 20 | 12 | 18 | 3 | |||
| Grayling | 203 | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 21 | 33 | 40 | 22 | 43 | 36 | 2 | 2 | . | |||
| Gatekeeper / Hedge Brown | 46 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 13 | 4 | 23 | 4 | . | . | . | |||
| Meadow Brown | 67 | . | . | . | . | . | . | . | . | . | . | . | 7 | 29 | 5 | 15 | 2 | 7 | 1 | 1 | . | . | . | . | |||
| Small Heath | 30 | . | . | . | . | . | . | . | 1 | 1 | 1 | 6 | 8 | 11 | . | 1 | . | . | . | . | 1 | . | . | . | |||