
| 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 | ||||||||||||||||||||||||||
| Large Skipper | . | . | . | . | . | . | . | . | 2 | . | . | . | 2 | . | . | . | . | . | . | |||||||
| Dingy Skipper | . | . | 2 | . | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | . | 6 | . | 2 | 4 | 2 | 2 | . | . | . | . | . | 44 | 2 | 6 | . | . | . | . | |||||||
| Large White | . | . | 2 | 4 | . | . | . | . | . | . | . | 18 | 2 | 6 | 4 | 2 | . | . | . | |||||||
| Small White | . | . | . | . | 2 | . | . | . | . | . | . | 4 | 20 | 8 | 6 | 2 | 4 | . | 6 | |||||||
| Green-veined White | . | . | . | . | . | . | . | . | . | 2 | . | . | 12 | . | . | . | . | 2 | . | |||||||
| Green Hairstreak | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Blue | 2 | . | 2 | 2 | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Common Blue | . | . | . | 2 | 6 | 8 | 6 | 2 | 2 | . | . | . | 20 | 2 | 28 | 16 | 8 | 10 | . | |||||||
| Holly Blue | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Duke of Burgundy Fritillary | . | . | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Peacock | 4 | 2 | . | . | . | . | 4 | . | . | . | . | . | 12 | . | . | . | . | . | . | |||||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | |||||||
| Speckled Wood | . | . | . | . | . | . | . | . | . | 2 | . | 2 | 2 | . | 2 | 2 | . | . | . | |||||||
| Marbled White | . | . | . | . | . | . | . | . | 4 | 28 | . | 30 | 6 | . | . | . | . | . | . | |||||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | 30 | 62 | 18 | 10 | 4 | . | . | . | |||||||
| Meadow Brown | . | . | . | . | . | . | . | . | 4 | 4 | 4 | 14 | 72 | 2 | 22 | 12 | 8 | 4 | . | |||||||
| Small Heath | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | |||||||
| Ringlet | . | . | . | . | . | . | . | 2 | 14 | 30 | 6 | 36 | 6 | 6 | . | . | . | . | . | |||||||