
| 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 | 8 | . | . | . | . | . | . | . | |||||||
| Large Skipper | 21 | . | . | . | . | . | . | . | . | . | 3 | 10 | 4 | 1 | 3 | . | . | . | . | . | |||||||
| Brimstone | 11 | 5 | . | 2 | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Large White | 11 | . | . | . | . | . | . | . | . | . | 1 | 3 | 3 | 4 | . | . | . | . | . | . | |||||||
| Small White | 74 | . | . | . | . | . | . | . | . | . | . | 3 | 7 | 18 | 4 | 3 | 7 | 7 | 10 | 8 | |||||||
| Green-veined White | 8 | . | . | . | 2 | 1 | 1 | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | |||||||
| Orange Tip | NI | . | . | 10 | 8 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 2 | 4 | 8 | 8 | 26 | |||||||
| Common Blue | 192 | . | . | . | . | . | 2 | 1 | 3 | 8 | 1 | . | . | 13 | 35 | 40 | 43 | 9 | 3 | 4 | |||||||
| Chalk-hill Blue | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 3 | . | . | . | |||||||
| Holly Blue | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | |||||||
| White Admiral | 2 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | |||||||
| Red Admiral | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | |||||||
| Painted Lady | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | |||||||
| Small Tortoiseshell | 10 | 2 | 1 | . | . | . | . | . | . | 1 | 3 | 1 | . | . | . | 1 | 1 | . | . | . | |||||||
| Peacock | NI | 3 | 5 | 4 | 2 | . | . | . | 1 | . | . | . | 1 | 3 | 1 | . | . | . | . | . | |||||||
| Comma | 8 | . | 2 | . | . | . | . | . | . | . | 1 | 1 | . | 2 | . | . | . | . | . | . | |||||||
| Speckled Wood | 55 | . | . | 1 | 3 | . | 2 | . | . | 1 | 1 | 2 | 4 | 1 | 3 | 4 | 6 | 14 | 2 | . | |||||||
| Gatekeeper / Hedge Brown | 95 | . | . | . | . | . | . | . | . | . | . | . | 22 | 39 | 27 | 7 | . | . | . | . | |||||||
| Meadow Brown | 718 | . | . | . | . | . | . | . | 7 | 84 | 164 | 176 | 108 | 57 | 58 | 36 | 12 | 3 | 1 | . | |||||||
| Ringlet | 4 | . | . | . | . | . | . | . | . | . | 3 | . | 1 | . | . | . | . | . | . | . | |||||||