
| 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 | NI | . | . | . | . | . | . | . | . | . | . | 1 | 21 | 23 | 29 | 9 | 1 | . | . | . | . | . | |||||
| Large Skipper | 72 | . | . | . | . | . | . | . | 6 | 2 | 21 | 22 | 11 | 1 | . | . | . | . | . | . | . | . | |||||
| Brimstone | 102 | 3 | 1 | 5 | 9 | 5 | 1 | . | . | . | . | . | . | 15 | 24 | 13 | . | 3 | 9 | 4 | 1 | . | |||||
| Large White | 6 | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | 1 | . | 1 | 1 | . | |||||
| Small White | 17 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 1 | 4 | . | 1 | 2 | 3 | 1 | . | |||||
| Green-veined White | 15 | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 3 | . | . | 1 | 4 | . | 1 | 2 | |||||
| Orange Tip | NI | . | . | 1 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Brown Argus | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Common Blue | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | 2 | . | . | . | . | |||||
| Chalk-hill Blue | 2 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | |||||
| Holly Blue | 2 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| White Admiral | 9 | . | . | . | . | . | . | . | . | . | 3 | . | 2 | 2 | . | . | . | . | . | . | . | . | |||||
| Purple Emperor | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Red Admiral | 13 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | 1 | 1 | . | 3 | 5 | 1 | |||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | |||||
| Small Tortoiseshell | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 1 | . | |||||
| Peacock | 164 | 9 | 8 | 4 | 10 | 2 | . | . | . | . | . | . | . | 39 | 61 | 23 | 2 | 4 | 2 | . | . | . | |||||
| Comma | 27 | 2 | . | . | 2 | . | . | . | . | . | . | 3 | 2 | 1 | 4 | . | . | 1 | . | 4 | 4 | 2 | |||||
| Small Pearl-bordered Fritillary | 9 | . | . | . | . | . | 1 | 4 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Pearl-bordered Fritillary | NI | . | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Dark Green Fritillary | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 162 | . | . | . | . | . | . | . | . | . | 6 | 30 | 23 | 28 | 29 | 19 | 3 | 3 | . | . | . | . | |||||
| Speckled Wood | 116 | . | . | . | . | 1 | 4 | 7 | 8 | 5 | 4 | . | 1 | 4 | 3 | 2 | 23 | 12 | 11 | 18 | 5 | 4 | |||||
| Marbled White | 134 | . | . | . | . | . | . | . | . | . | 6 | 37 | 33 | 14 | 9 | 1 | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 324 | . | . | . | . | . | . | . | . | . | . | 1 | 16 | 106 | 89 | 70 | 8 | 10 | . | 1 | . | . | |||||
| Meadow Brown | 278 | . | . | . | . | . | . | . | . | 1 | 19 | 60 | 45 | 43 | 27 | 21 | 5 | 8 | . | . | . | . | |||||
| Ringlet | 828 | . | . | . | . | . | . | . | . | . | 43 | 291 | 259 | 36 | 30 | 3 | . | . | . | . | . | . | |||||