
| 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 | 53 | . | . | . | . | . | . | . | . | . | . | . | 2 | 13 | . | . | . | . | . | . | . | ||||||
| Small Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | 4 | 3 | 6 | 15 | . | . | . | . | . | ||||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | 4 | 3 | 1 | . | . | . | . | . | ||||||
| Large Skipper | 8 | . | . | . | . | . | . | . | . | . | . | . | 4 | 4 | . | . | . | . | . | . | . | ||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Brimstone | 5 | 1 | 2 | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | ||||||
| Large White | NI | . | . | . | . | . | . | . | . | . | . | 2 | . | 1 | . | 1 | 2 | 2 | . | . | . | ||||||
| Small White | NI | . | . | . | 2 | 3 | 7 | 1 | 4 | 1 | . | . | . | . | 1 | 9 | 4 | 1 | 5 | . | . | ||||||
| Green-veined White | NI | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | 2 | 1 | 1 | . | . | . | ||||||
| Orange Tip | 28 | . | . | 7 | 7 | 2 | 4 | . | 8 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Common Blue | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | . | 3 | . | . | . | ||||||
| Holly Blue | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | ||||||
| White Admiral | 5 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 2 | . | . | . | . | . | . | ||||||
| Red Admiral | 10 | . | . | . | . | . | . | . | . | 3 | 1 | . | . | . | . | 2 | . | 1 | . | . | 1 | ||||||
| Small Tortoiseshell | 12 | . | 2 | . | . | . | . | . | . | . | . | . | 1 | 3 | . | . | . | 1 | 4 | . | . | ||||||
| Peacock | NI | 3 | 3 | . | 1 | 3 | . | . | 1 | . | . | . | . | . | . | 4 | 12 | 1 | . | . | . | ||||||
| Comma | 10 | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 2 | 1 | 2 | 1 | 1 | . | . | . | ||||||
| Speckled Wood | 159 | . | . | . | . | 3 | . | 1 | 1 | 3 | 5 | 2 | 4 | 4 | 4 | 11 | 13 | 32 | 23 | 6 | . | ||||||
| Gatekeeper / Hedge Brown | 318 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 50 | 117 | 99 | . | . | . | . | ||||||
| Meadow Brown | 955 | . | . | . | . | . | . | . | . | . | . | 10 | 159 | 345 | 308 | 80 | 35 | . | . | . | . | ||||||
| Small Heath | 10 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 6 | . | . | . | ||||||