
| 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/Essex Skipper | NI | . | . | . | . | . | . | . | . | 7 | 4 | 5 | 9 | 7 | . | . | . | . | . | . | |||||||
| Silver-spotted Skipper | 34 | . | . | . | . | . | . | . | . | . | . | . | 10 | 9 | 4 | 2 | . | 2 | . | . | |||||||
| Large Skipper | 5 | . | . | . | . | . | . | . | . | . | 5 | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 7 | 1 | 2 | . | 1 | . | . | . | . | . | . | . | 2 | . | . | . | 1 | . | . | . | |||||||
| Large White | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Small White | 4 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | |||||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||
| Brown Argus | 6 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 1 | . | . | . | . | . | |||||||
| Common Blue | 39 | . | . | . | . | 1 | 4 | . | . | . | . | 1 | 8 | 7 | 4 | 3 | 1 | 2 | . | . | |||||||
| Peacock | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | |||||||
| Speckled Wood | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||
| Marbled White | 31 | . | . | . | . | . | . | 4 | 4 | 8 | 4 | 3 | 8 | . | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 57 | . | . | . | . | . | . | . | . | . | 6 | 14 | 8 | 12 | 5 | 2 | 1 | . | . | . | |||||||
| Meadow Brown | 348 | . | . | . | . | . | . | . | 17 | 21 | 19 | 22 | 52 | 43 | 58 | 9 | 22 | 24 | 10 | . | |||||||
| Small Heath | 23 | . | . | . | . | . | . | 5 | 3 | 1 | . | . | . | . | . | 2 | 2 | 5 | 2 | . | |||||||
| Ringlet | 53 | . | . | . | . | . | . | 12 | . | 23 | 8 | 4 | . | . | . | . | . | . | . | . | |||||||