
| 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 | 395 | . | . | . | . | . | . | . | . | . | 15 | 14 | 126 | 52 | 84 | 6 | 1 | . | . | . | |||||||
| Large Skipper | 89 | . | . | . | . | . | . | . | 9 | 8 | 24 | 12 | 6 | 7 | . | 1 | . | . | . | . | |||||||
| Brimstone | 18 | 1 | 1 | . | 1 | 6 | 1 | . | 1 | 1 | . | . | . | . | 1 | 1 | . | . | . | . | |||||||
| Large White | 48 | . | . | . | . | . | . | . | . | . | . | 1 | 2 | . | 9 | 11 | 1 | 10 | 4 | . | |||||||
| Small White | 65 | 1 | 2 | . | 1 | . | 2 | . | . | . | . | . | 1 | 6 | . | 8 | 4 | 12 | 5 | 13 | |||||||
| Green-veined White | 78 | . | 1 | 1 | 2 | . | . | 1 | 3 | . | 1 | . | 6 | 10 | 7 | 8 | 5 | 6 | 7 | . | |||||||
| Orange Tip | 16 | 2 | 2 | . | 2 | 4 | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Brown Hairstreak | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||
| Small Copper | 13 | . | . | . | . | 1 | 1 | . | . | . | . | . | . | 1 | 2 | 2 | . | 1 | 1 | . | |||||||
| Common Blue | 148 | . | . | . | . | 13 | 16 | 21 | 15 | 13 | 1 | 1 | . | 2 | 6 | 18 | 17 | 4 | 1 | 15 | |||||||
| Holly Blue | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Tortoiseshell | 77 | 6 | . | . | . | . | . | . | 1 | 1 | 8 | 5 | . | 4 | 2 | 4 | 9 | 20 | 1 | . | |||||||
| Peacock | 62 | 5 | 11 | 3 | . | 1 | . | 1 | . | . | . | . | . | 6 | 8 | 14 | . | 1 | 1 | . | |||||||
| Comma | 6 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 1 | . | . | 8 | 7 | |||||||
| Speckled Wood | 39 | . | . | . | . | . | 1 | 4 | . | 2 | . | . | . | . | . | . | 9 | 12 | 4 | . | |||||||
| Marbled White | 32 | . | . | . | . | . | . | . | . | . | 5 | 12 | 7 | 2 | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 172 | . | . | . | . | . | . | . | . | . | . | . | 12 | 60 | 52 | 11 | . | 1 | . | . | |||||||
| Meadow Brown | 94 | . | . | . | . | . | . | . | . | . | 22 | 13 | 23 | 6 | 4 | . | 1 | . | . | . | |||||||
| Small Heath | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | |||||||
| Ringlet | 163 | . | . | . | . | . | . | . | . | . | 22 | 57 | 35 | 11 | 4 | . | . | . | . | . | |||||||
| Silver Y | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | |||||||