
| 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 | 7 | . | . | . | . | . | . | . | . | . | . | 1 | 6 | . | . | . | . | . | . | . | . | . | |||||
| Large Skipper | 17 | . | . | . | . | . | . | 2 | 4 | 4 | 1 | 4 | 1 | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 3 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Large White | 6 | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | |||||
| Small White | 8 | . | . | . | . | . | 2 | . | . | . | . | . | . | 1 | 3 | 1 | . | . | . | . | . | . | |||||
| Green-veined White | 74 | . | . | 5 | 11 | 2 | 4 | . | . | 1 | . | 3 | 10 | 1 | 7 | 3 | 1 | 1 | . | . | . | 1 | |||||
| Orange Tip | NI | . | . | . | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Purple Hairstreak | 9 | . | . | . | . | . | . | . | . | . | . | . | . | 5 | 1 | . | . | 2 | 1 | . | . | . | |||||
| White-letter Hairstreak | 17 | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 6 | 3 | . | . | 2 | 1 | . | . | . | |||||
| White Admiral | 5 | . | . | . | . | . | . | . | . | 3 | 1 | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Red Admiral | 2 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | . | . | . | . | . | |||||
| Peacock | NI | 3 | 1 | 2 | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Comma | 8 | 2 | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | 4 | . | |||||
| Speckled Wood | 66 | . | . | . | . | . | 1 | 3 | 3 | 1 | 1 | . | 2 | 1 | 4 | 5 | 7 | 7 | 8 | 14 | 3 | 4 | |||||
| Marbled White | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 25 | . | . | . | . | . | . | . | . | . | . | 1 | 6 | 5 | 7 | 4 | . | 2 | . | . | . | . | |||||
| Meadow Brown | 105 | . | . | . | . | . | . | 5 | 3 | 12 | 9 | 7 | 23 | 26 | 9 | 4 | 1 | 2 | 1 | . | 1 | . | |||||
| Ringlet | 136 | . | . | . | . | . | . | . | 13 | 29 | 34 | 42 | 13 | 4 | 1 | . | . | . | . | . | . | . | |||||