
| 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 | 20 | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | 5 | 9 | 1 | 2 | 1 | . | . | . | |||||
| Large Skipper | 43 | . | . | . | . | . | . | . | . | . | 15 | 5 | 5 | 4 | 1 | 1 | . | . | . | . | . | . | |||||
| Clouded Yellow | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||
| Brimstone | 3 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Large White | 24 | . | . | . | 1 | 2 | 5 | . | . | 1 | 1 | . | . | 1 | 3 | 3 | 1 | 2 | 1 | . | . | . | |||||
| Small White | 4 | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||
| Green-veined White | 33 | . | 2 | . | 5 | 3 | 6 | . | . | 1 | . | . | . | . | 3 | 1 | 1 | 1 | 3 | 2 | . | . | |||||
| Orange Tip | 6 | 1 | . | . | . | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Green Hairstreak | 5 | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||
| Common Blue | 13 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 5 | 3 | . | . | . | |||||
| Holly Blue | 5 | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | . | |||||
| Red Admiral | 15 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | 2 | 1 | 6 | . | . | |||||
| Painted Lady | 8 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 2 | . | . | . | |||||
| Small Tortoiseshell | 6 | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 1 | . | |||||
| Peacock | 79 | 16 | 2 | 7 | 3 | 2 | 1 | 1 | . | . | . | . | . | . | 1 | 3 | 9 | 13 | 2 | . | 1 | . | |||||
| Comma | 12 | 1 | . | . | . | 1 | . | . | . | . | . | . | 1 | 1 | . | 2 | 1 | 1 | 1 | . | 2 | 4 | |||||
| Small Pearl-bordered Fritillary | 7 | . | . | . | . | . | . | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver-washed Fritillary | 40 | . | . | . | . | . | . | . | . | . | . | . | 4 | 3 | 5 | 8 | 4 | 5 | 5 | . | . | . | |||||
| Speckled Wood | 90 | 3 | 4 | 5 | 2 | 3 | 1 | 2 | . | 1 | 4 | 1 | 1 | . | 4 | 5 | 2 | 7 | 12 | 11 | 4 | 4 | |||||
| Wall Brown | 2 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Marbled White | 182 | . | . | . | . | . | . | . | . | . | . | 4 | 43 | 45 | 32 | 12 | 1 | 1 | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 296 | . | . | . | . | . | . | . | . | . | . | . | 2 | 18 | 34 | 116 | 39 | 52 | 15 | 1 | 1 | . | |||||
| Meadow Brown | 199 | . | . | . | . | . | . | . | . | . | 11 | 16 | 11 | 27 | 21 | 36 | 7 | 15 | 19 | 1 | . | . | |||||
| Ringlet | 578 | . | . | . | . | . | . | . | . | . | 61 | 108 | 154 | 80 | 22 | 6 | . | . | . | . | . | . | |||||