
| 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 | NI | . | . | . | . | . | . | . | . | . | 2 | 18 | 20 | 6 | 4 | . | . | . | . | . | . | ||||||
| Large Skipper | 30 | . | . | . | . | . | . | . | . | . | . | 3 | 14 | 2 | 2 | . | . | . | . | . | . | ||||||
| Clouded Yellow | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 2 | ||||||
| Brimstone | 30 | . | 9 | 2 | . | 5 | 4 | 4 | 3 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Large White | 86 | . | . | . | . | . | . | . | . | . | 2 | 4 | 24 | 20 | 13 | . | . | 2 | . | . | . | ||||||
| Small White | 198 | . | . | . | . | . | . | . | . | . | . | 3 | 31 | 66 | 44 | 5 | 1 | 4 | 1 | 1 | . | ||||||
| Green-veined White | 3 | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||
| Orange Tip | 25 | . | . | 2 | . | 10 | 4 | 7 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Purple Hairstreak | 3 | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 26 | . | . | . | . | . | 1 | 3 | 3 | . | . | 2 | . | . | . | . | 2 | 3 | . | 4 | 3 | ||||||
| Small Blue | 23 | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | 4 | 1 | 1 | 6 | . | . | ||||||
| Common Blue | 127 | . | . | . | . | . | . | . | 3 | 11 | . | . | . | . | 13 | 15 | 15 | 19 | 10 | 6 | . | ||||||
| White Admiral | 11 | . | . | . | . | . | . | . | . | . | . | 7 | . | . | . | . | . | . | . | . | . | ||||||
| Red Admiral | 15 | . | . | . | . | . | . | . | . | 1 | . | 4 | . | 2 | . | . | 2 | 1 | 1 | 1 | . | ||||||
| Small Tortoiseshell | 37 | . | 2 | . | . | . | . | . | . | 1 | 2 | 7 | . | 1 | . | 1 | 7 | 3 | 4 | 1 | . | ||||||
| Peacock | 33 | . | 4 | 4 | . | 1 | 2 | . | . | . | . | . | 5 | 7 | 3 | . | . | . | 1 | . | . | ||||||
| Comma | 9 | . | 1 | . | 1 | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | . | . | ||||||
| Speckled Wood | 120 | . | . | . | 2 | 2 | 3 | 1 | 4 | 7 | 8 | 3 | 1 | 3 | 9 | 9 | 7 | 11 | 11 | 5 | . | ||||||
| Gatekeeper / Hedge Brown | 905 | . | . | . | . | . | . | . | . | . | . | . | 50 | 213 | 364 | 38 | 6 | 7 | . | 1 | . | ||||||
| Meadow Brown | 909 | . | . | . | . | . | . | . | . | 36 | 82 | 115 | 69 | 131 | 186 | 12 | 7 | 3 | . | . | . | ||||||
| Ringlet | 69 | . | . | . | . | . | . | . | . | . | 9 | 26 | 7 | 2 | 3 | . | . | . | . | . | . | ||||||