
| 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 | 50 | . | . | . | . | . | . | . | . | . | . | 11 | 8 | 6 | 6 | . | . | . | . | . | |||||||
| Large Skipper | 19 | . | . | . | . | . | . | . | 1 | 1 | 4 | 3 | 3 | 1 | . | . | . | . | . | . | |||||||
| Dingy Skipper | 8 | . | . | . | . | . | 3 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grizzled Skipper | 26 | . | . | . | . | . | 12 | 5 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 99 | 10 | . | 4 | 18 | 15 | 4 | 6 | 3 | 2 | 1 | . | 3 | . | 4 | 2 | 1 | 3 | 3 | . | |||||||
| Large White | 18 | . | . | . | . | . | 3 | . | 3 | . | . | . | 1 | . | 1 | 3 | 2 | . | . | . | |||||||
| Small White | 15 | . | . | . | 6 | . | . | . | . | . | . | . | 1 | 1 | 3 | 1 | 2 | . | . | . | |||||||
| Green-veined White | 17 | . | . | 1 | 2 | 1 | 2 | 2 | 1 | 1 | . | . | . | 1 | 3 | . | . | . | . | . | |||||||
| Orange Tip | 5 | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Holly Blue | 6 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | |||||||
| White Admiral | 20 | . | . | . | . | . | . | . | . | . | . | 5 | 6 | . | . | . | . | . | . | . | |||||||
| Red Admiral | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||
| Painted Lady | 12 | . | . | . | . | . | 1 | . | . | . | . | . | . | 2 | 3 | . | . | . | 1 | . | |||||||
| Small Tortoiseshell | 21 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | 1 | . | 1 | 2 | 2 | 10 | |||||||
| Peacock | 147 | 14 | 3 | 5 | 8 | 3 | 1 | . | 1 | . | . | . | . | 26 | 40 | 19 | 1 | . | . | . | |||||||
| Comma | 17 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | 1 | 3 | 1 | . | . | 3 | 3 | |||||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | . | . | 2 | 1 | . | 2 | . | . | . | . | . | . | . | . | . | |||||||
| Silver-washed Fritillary | 46 | . | . | . | . | . | . | . | . | . | . | 5 | 13 | 2 | 4 | 3 | 1 | . | 1 | . | |||||||
| Marsh Fritillary | 10 | . | . | . | . | . | 6 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 10 | . | . | 1 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | 1 | 3 | . | 2 | |||||||
| Marbled White | 43 | . | . | . | . | . | . | . | . | . | . | 9 | 14 | . | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 45 | . | . | . | . | . | . | . | . | . | . | . | 4 | 7 | 14 | 6 | 2 | . | . | . | |||||||
| Meadow Brown | 109 | . | . | . | . | . | . | . | . | 8 | 6 | 19 | 19 | 9 | 4 | 3 | . | 1 | . | . | |||||||
| Small Heath | 3 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Ringlet | 26 | . | . | . | . | . | . | . | . | . | . | 5 | 9 | . | . | . | . | . | . | . | |||||||