
| 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/Essex Skipper | 129 | . | . | . | . | . | . | 1 | 6 | 4 | 19 | 46 | 18 | 7 | . | . | . | . | |||||||||
| Large Skipper | 78 | . | . | . | . | . | 13 | 15 | 10 | 14 | 6 | 2 | 2 | . | . | . | . | . | |||||||||
| Grizzled Skipper | 2 | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||||
| Brimstone | NI | 2 | . | 1 | 1 | . | 1 | . | . | . | 1 | 3 | . | . | 1 | 5 | 7 | . | |||||||||
| Large White | 55 | . | 1 | 3 | . | . | 1 | . | . | 2 | 10 | 12 | 1 | 1 | . | 1 | 3 | 2 | |||||||||
| Small White | 119 | . | . | . | 1 | 1 | . | . | . | 6 | 4 | 12 | 9 | 9 | 12 | 19 | 25 | 3 | |||||||||
| Green-veined White | 37 | . | 2 | 1 | 2 | 1 | . | . | . | 2 | 2 | 8 | 2 | 2 | 2 | . | 1 | 1 | |||||||||
| Orange Tip | NI | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Purple Hairstreak | 3 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | |||||||||
| Common Blue | 105 | . | . | . | 2 | 7 | 13 | 13 | 2 | . | . | 6 | 5 | 17 | 12 | 4 | 14 | . | |||||||||
| White Admiral | 21 | . | . | . | . | . | . | 9 | 7 | 3 | . | . | 1 | . | . | . | . | . | |||||||||
| Purple Emperor | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Red Admiral | 13 | . | . | . | . | . | . | . | 2 | . | . | . | . | . | 1 | 5 | 2 | 1 | |||||||||
| Painted Lady | 6 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | 2 | . | |||||||||
| Small Tortoiseshell | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | . | . | |||||||||
| Peacock | NI | 4 | 1 | 2 | 1 | . | . | . | . | . | . | 3 | 3 | . | . | . | . | . | |||||||||
| Comma | NI | 2 | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | . | 1 | 7 | 2 | |||||||||
| Speckled Wood | NI | . | 5 | 3 | 3 | 6 | 4 | 6 | 1 | 1 | . | 1 | 2 | 2 | 4 | 9 | 12 | . | |||||||||
| Marbled White | 77 | . | . | . | . | . | . | 3 | 7 | 13 | 15 | 15 | 2 | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 277 | . | . | . | . | . | . | . | . | . | 49 | 91 | 55 | 16 | 4 | . | . | . | |||||||||
| Meadow Brown | 290 | . | . | . | . | . | 14 | 34 | 48 | 46 | 32 | 36 | 13 | 6 | 1 | 1 | . | . | |||||||||
| Ringlet | 386 | . | . | . | . | . | . | 15 | 56 | 152 | 45 | 6 | . | . | . | . | . | . | |||||||||