
| 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 | ||||||||||||||||||||||||||
| Silver-spotted Skipper | . | . | . | . | . | . | . | . | . | . | . | 22 | 22 | 14 | . | . | . | . | . | |||||||
| Large Skipper | . | . | . | . | . | . | . | 22 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | . | 6 | . | 2 | . | 2 | . | . | . | . | . | 26 | . | . | . | . | . | . | . | |||||||
| Large White | . | . | . | . | . | 2 | . | . | 2 | . | 14 | 6 | . | . | . | . | . | . | . | |||||||
| Small White | . | . | . | . | . | . | . | . | . | . | . | 4 | . | 6 | . | 2 | 2 | . | 2 | |||||||
| Green-veined White | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | |||||||
| Brown Argus | . | . | . | . | . | . | . | 2 | . | . | . | 2 | 2 | 2 | . | 6 | . | . | . | |||||||
| Common Blue | . | . | . | . | . | 10 | 6 | 4 | . | . | . | 28 | 20 | 86 | 12 | 14 | 2 | . | . | |||||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | 4 | 2 | . | . | . | . | . | . | . | |||||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | . | . | . | 12 | . | 2 | 2 | . | . | |||||||
| Peacock | . | . | . | . | . | . | . | . | . | . | . | 4 | 2 | . | . | . | . | . | . | |||||||
| Speckled Wood | . | 2 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | . | . | 2 | |||||||
| Marbled White | . | . | . | . | . | . | . | . | . | . | 8 | . | . | . | . | . | . | . | . | |||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | 10 | 24 | 56 | 6 | . | 2 | . | . | . | |||||||
| Meadow Brown | . | . | . | . | . | . | . | 26 | 18 | 22 | 40 | 86 | 56 | 118 | 76 | 68 | 40 | 28 | 28 | |||||||
| Small Heath | . | . | . | 2 | 8 | 4 | . | 18 | 4 | 6 | 18 | 4 | 4 | 20 | 12 | 22 | 12 | 2 | . | |||||||
| Ringlet | . | . | . | . | . | . | . | 12 | 10 | 12 | 20 | . | . | . | . | . | . | . | . | |||||||