
| 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 | ||||||||||||||||||||||||||
| Large Skipper | 12 | . | . | . | . | . | . | . | 2 | . | 2 | 2 | 2 | 2 | . | . | . | . | . | . | |||||||
| Brimstone | 29 | 2 | 8 | 4 | 4 | 3 | . | . | 1 | . | . | . | . | . | . | . | 1 | 2 | . | . | |||||||
| Large White | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||||
| Small White | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Green-veined White | 25 | 1 | 2 | 1 | 1 | 1 | . | 1 | . | . | . | . | 3 | 4 | 3 | 3 | 1 | . | . | . | |||||||
| Orange Tip | 5 | . | . | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | NI | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Common Blue | 3 | . | . | . | . | . | . | . | 1 | . | . | 2 | . | . | . | . | . | . | . | . | |||||||
| Holly Blue | 37 | 1 | 7 | 8 | 3 | 3 | . | . | . | . | . | . | 1 | 3 | 3 | 3 | 2 | . | . | . | |||||||
| White Admiral | 9 | . | . | . | . | . | . | . | . | 1 | 1 | 3 | 1 | 1 | . | . | . | . | . | . | |||||||
| Red Admiral | 4 | . | . | . | 1 | . | . | . | . | . | 1 | . | . | 2 | . | . | . | . | . | . | |||||||
| Peacock | 15 | 4 | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Comma | 4 | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | 1 | . | . | . | . | |||||||
| Pearl-bordered Fritillary | NI | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| High Brown Fritillary | 4 | . | . | . | . | . | . | . | . | 1 | . | . | . | 2 | 1 | . | . | . | . | . | |||||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||||
| Silver-washed Fritillary | 21 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 1 | 5 | 5 | 3 | . | . | . | |||||||
| Speckled Wood | 69 | . | 3 | . | . | 4 | . | 1 | 4 | . | 4 | 2 | . | 8 | 6 | 8 | 9 | 7 | 3 | 1 | |||||||
| Wall Brown | 7 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 2 | . | . | |||||||
| Gatekeeper / Hedge Brown | 56 | . | . | . | . | . | . | . | . | . | . | . | 7 | 7 | 9 | 6 | 10 | 7 | 8 | . | |||||||
| Meadow Brown | 99 | . | . | . | . | . | . | . | . | 3 | 6 | 11 | 16 | 11 | 1 | 4 | 15 | 13 | 2 | . | |||||||
| Ringlet | 15 | . | . | . | . | . | . | . | . | 1 | 9 | 4 | . | . | . | . | . | . | . | . | |||||||