
| 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 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | ||||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | ||||||
| Large Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | ||||||
| Brimstone | 2 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Large White | 24 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | 4 | 3 | 3 | . | 1 | 1 | ||||||
| Small White | 129 | . | . | . | . | 1 | . | . | . | 1 | . | . | . | 1 | 1 | 7 | 8 | 21 | 5 | 4 | 2 | ||||||
| Green-veined White | 333 | . | 2 | . | 2 | 19 | 3 | 6 | 3 | . | . | . | 3 | 7 | 24 | 55 | 18 | 21 | 9 | 2 | 2 | ||||||
| Orange Tip | NI | . | . | . | 2 | 4 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||
| Small Copper | 6 | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | 1 | 1 | . | 1 | . | . | . | ||||||
| Common Blue | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||
| Holly Blue | 13 | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | 3 | . | . | 1 | . | . | . | ||||||
| Red Admiral | NI | . | . | . | . | . | . | . | . | . | . | 2 | 3 | . | 1 | 5 | . | . | . | 1 | . | ||||||
| Small Tortoiseshell | NI | 22 | 6 | 7 | 10 | . | 2 | 2 | 2 | . | 14 | 18 | 7 | 8 | 5 | 2 | 1 | . | . | . | . | ||||||
| Peacock | 17 | 1 | 1 | 2 | 3 | . | 1 | 4 | 2 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | ||||||
| Comma | 25 | 1 | . | 1 | 1 | . | . | . | . | . | 1 | 4 | 1 | 3 | 2 | 2 | . | . | . | . | 1 | ||||||
| Speckled Wood | 28 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | 4 | 2 | 2 | 3 | ||||||
| Gatekeeper / Hedge Brown | 115 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 29 | 17 | 12 | . | . | . | ||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | . | 55 | 48 | 55 | 32 | 46 | 49 | 17 | 11 | 1 | . | . | ||||||
| Scarlet Tiger | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||