
| 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 | 2 | . | . | . | . | . | . | . | . | . | . | . | 8 | 25 | 6 | . | . | . | . | . | |||||||
| Small Skipper | . | . | . | . | . | . | . | . | . | . | . | . | 8 | 3 | 1 | . | 1 | . | . | . | |||||||
| Essex Skipper | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | |||||||
| Large Skipper | NI | . | . | . | . | . | . | . | . | 5 | 7 | 1 | 9 | 1 | . | . | . | . | . | . | |||||||
| Brimstone | 10 | . | . | 4 | 4 | . | . | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||
| Large White | 44 | . | . | . | 3 | 3 | . | 4 | 3 | . | . | 3 | 87 | 53 | 39 | 15 | 8 | 9 | 3 | 3 | |||||||
| Small White | 35 | . | . | . | 9 | 5 | . | 12 | 7 | . | 2 | 4 | 11 | 26 | 21 | 7 | 10 | 2 | 1 | 2 | |||||||
| Green-veined White | 8 | . | . | . | 3 | 2 | 2 | 2 | . | . | . | . | . | . | . | 3 | . | . | . | . | |||||||
| Orange Tip | 5 | . | . | 2 | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 5 | . | . | . | . | . | . | 4 | 1 | . | . | . | 1 | . | 1 | 1 | . | . | . | . | |||||||
| Brown Argus | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||
| Common Blue | 1 | . | . | . | . | . | . | 1 | 1 | . | . | . | 2 | . | . | . | . | . | . | . | |||||||
| Holly Blue | 31 | . | . | . | 3 | . | . | . | . | . | . | . | 4 | 6 | 4 | 15 | 4 | 7 | 1 | . | |||||||
| Red Admiral | 10 | . | . | . | . | . | . | . | . | . | 2 | . | 2 | . | . | . | . | . | 3 | 1 | |||||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Tortoiseshell | 135 | 7 | 18 | 21 | 8 | 7 | 1 | 1 | . | 4 | 20 | 21 | 16 | 2 | 1 | . | . | . | . | . | |||||||
| Peacock | 35 | . | 4 | 15 | 9 | 1 | . | . | . | . | . | . | . | 5 | 3 | . | . | . | . | . | |||||||
| Comma | 14 | . | . | 1 | . | . | . | . | . | 1 | 4 | . | 1 | . | 2 | . | . | . | . | . | |||||||
| Speckled Wood | NI | . | . | 1 | . | 1 | . | . | 1 | . | . | . | . | . | . | 2 | 3 | 4 | 3 | 7 | |||||||
| Marbled White | 61 | . | . | . | . | . | . | . | . | 14 | 36 | 20 | 36 | 20 | 5 | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 234 | . | . | . | . | . | . | . | . | . | . | 19 | 146 | 210 | 250 | 84 | 8 | . | . | . | |||||||
| Meadow Brown | 158 | . | . | . | . | . | . | . | . | 34 | 59 | 34 | 122 | 56 | 48 | 27 | 20 | 8 | 1 | . | |||||||
| Ringlet | 139 | . | . | . | . | . | . | . | . | 37 | 47 | 51 | 14 | 21 | 10 | . | . | . | . | . | |||||||