
| 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 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 70 | 2 | . | 3 | 9 | 7 | 1 | 7 | 3 | . | . | . | 3 | 5 | 10 | 6 | 2 | . | . | . | . | . | |||||
| Large White | 28 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 5 | 11 | . | 3 | . | . | . | . | 2 | |||||
| Small White | 11 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 6 | . | 2 | . | . | 1 | . | . | |||||
| Green-veined White | 24 | . | . | . | 1 | 1 | 3 | . | . | . | 2 | 3 | 1 | 1 | 1 | 4 | 1 | 2 | . | . | . | . | |||||
| Orange Tip | 5 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Holly Blue | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | 2 | . | . | . | . | |||||
| White Admiral | 13 | . | . | . | . | . | . | . | . | . | 3 | 3 | 4 | 1 | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 6 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | 1 | . | . | . | 1 | |||||
| Small Tortoiseshell | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Peacock | 19 | 1 | 1 | . | 7 | . | . | . | . | . | . | . | 1 | . | 3 | 2 | . | . | . | . | . | . | |||||
| Comma | 10 | . | . | . | . | 1 | . | . | 1 | . | . | 2 | 1 | . | 1 | . | . | . | . | . | . | 2 | |||||
| Pearl-bordered Fritillary | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| High Brown Fritillary | 3 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 26 | . | . | . | . | . | . | . | . | . | 1 | 3 | 8 | 2 | 9 | 2 | . | . | . | . | . | . | |||||
| Speckled Wood | 63 | . | . | . | . | 2 | 3 | 4 | 4 | 4 | . | . | 2 | 2 | 6 | 4 | 3 | 3 | 7 | 5 | 5 | . | |||||
| Wall Brown | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 18 | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | 10 | 3 | . | . | . | . | . | . | |||||
| Meadow Brown | 63 | . | . | . | . | . | . | . | . | . | 17 | 11 | 8 | 4 | 10 | 3 | 1 | . | . | . | . | . | |||||
| Ringlet | 4 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 2 | . | . | . | . | . | . | . | . | |||||