
| 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 | 28 | . | . | . | . | . | . | . | . | 3 | 7 | 9 | 1 | 1 | 1 | 1 | . | . | . | . | . | . | . | ||||
| Clouded Yellow | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | 2 | . | . | ||||
| Brimstone | 135 | . | 9 | 12 | 7 | 16 | 7 | 6 | 6 | 17 | 9 | 3 | 1 | . | 5 | 8 | 1 | 9 | . | . | 2 | . | . | ||||
| Large White | 135 | . | . | . | . | 2 | . | 5 | 11 | 9 | 6 | 5 | 1 | 3 | 11 | 14 | 20 | 7 | 7 | 1 | 3 | 7 | 5 | ||||
| Small White | 84 | . | . | . | . | . | . | . | . | . | . | . | . | . | 5 | 14 | 7 | 20 | 15 | 6 | 4 | . | . | ||||
| Green-veined White | 36 | . | . | . | 2 | 1 | 8 | 3 | . | . | . | . | . | . | . | . | 11 | . | . | 1 | 1 | . | . | ||||
| Orange Tip | 17 | . | . | . | . | 2 | 3 | 3 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | 87 | . | . | 5 | 8 | 17 | 22 | 11 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 2 | . | . | . | . | ||||
| Northern Brown Argus | 55 | . | . | . | . | . | . | . | 2 | 1 | 9 | 13 | 17 | 1 | 1 | 1 | 2 | . | . | . | . | . | . | ||||
| Common Blue | 42 | . | . | . | . | . | . | . | . | 16 | 9 | 3 | . | . | . | 1 | 4 | 2 | . | . | . | . | . | ||||
| Holly Blue | 13 | . | . | . | . | 1 | 2 | 1 | . | . | . | 1 | . | . | . | 1 | 1 | . | 3 | . | . | . | . | ||||
| Red Admiral | 25 | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 2 | 3 | . | 4 | . | 3 | 2 | 3 | ||||
| Painted Lady | 95 | . | . | . | . | . | . | . | . | . | . | 4 | . | . | 1 | 5 | 20 | 33 | 12 | 1 | 1 | 3 | 1 | ||||
| Small Tortoiseshell | 56 | . | . | 1 | 2 | 1 | . | . | . | . | . | 1 | 6 | 18 | 11 | 3 | 1 | 3 | 1 | . | . | 2 | . | ||||
| Peacock | 109 | . | 7 | 12 | 28 | 9 | 7 | 4 | . | . | . | . | . | . | 7 | 14 | 8 | 3 | 3 | . | 1 | 3 | 2 | ||||
| Comma | 19 | . | . | . | . | 2 | . | . | . | . | . | . | . | 5 | 3 | . | . | . | . | . | 2 | 4 | . | ||||
| Small Pearl-bordered Fritillary | 6 | . | . | . | . | . | . | . | . | . | 2 | 3 | . | . | . | . | . | . | . | . | . | . | . | ||||
| Pearl-bordered Fritillary | 24 | . | . | . | . | 1 | 5 | 4 | 4 | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | ||||
| High Brown Fritillary | 87 | . | . | . | . | . | . | . | . | . | . | 5 | 4 | 22 | 23 | 21 | 2 | 1 | . | . | . | . | . | ||||
| Dark Green Fritillary | 1 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||
| Speckled Wood | 532 | . | . | . | 1 | 3 | 20 | 13 | 2 | 12 | 18 | 26 | 24 | 9 | 18 | 27 | 23 | 23 | 22 | 18 | 52 | 67 | 45 | ||||
| Wall Brown | 24 | . | . | . | . | . | . | . | 3 | 3 | 2 | . | . | . | . | 1 | 3 | 3 | 2 | 1 | 1 | . | 2 | ||||
| Gatekeeper / Hedge Brown | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | ||||
| Meadow Brown | 403 | . | . | . | . | . | . | . | . | . | 19 | 52 | 60 | 82 | 50 | 47 | 35 | 2 | 8 | . | . | . | . | ||||
| Small Heath | 32 | . | . | . | . | . | . | . | 10 | 9 | 4 | 1 | . | . | . | . | . | . | 4 | 1 | . | . | . | ||||