
| 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 | . | . | . | . | . | . | . | . | 2 | 53 | 134 | 169 | 127 | 51 | 24 | 1 | . | . | . | . | . | |||||
| Large Skipper | 106 | . | . | . | . | . | . | 10 | 20 | 40 | 6 | 8 | 12 | 2 | 2 | 1 | . | . | . | . | . | . | |||||
| Brimstone | 5 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | 1 | |||||
| Large White | 25 | . | . | 2 | . | . | . | . | . | . | . | . | 2 | 5 | 5 | 2 | 3 | 3 | 1 | . | . | . | |||||
| Small White | 62 | . | 1 | 2 | 4 | . | 2 | . | 2 | . | . | 6 | 5 | 2 | 11 | 9 | 2 | 4 | 3 | 1 | 1 | . | |||||
| Green-veined White | 73 | . | . | 2 | 2 | 1 | 2 | . | . | . | . | . | 1 | 2 | 3 | 18 | 20 | . | 1 | 1 | . | . | |||||
| Orange Tip | 14 | 1 | 2 | 4 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | |||||
| Brown Argus | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | . | . | |||||
| Common Blue | 51 | . | . | . | 1 | 3 | 4 | 1 | 6 | . | . | . | . | . | 7 | 4 | 8 | 1 | 5 | 3 | . | . | |||||
| Holly Blue | 1 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Painted Lady | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Tortoiseshell | 40 | . | . | . | . | . | . | . | 3 | 4 | 12 | 8 | 3 | . | . | . | 3 | . | 4 | . | 1 | . | |||||
| Peacock | 39 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | 2 | 9 | 16 | . | . | . | . | . | . | |||||
| Comma | 36 | . | . | . | . | . | . | . | 23 | . | . | 3 | 2 | . | 2 | . | . | 1 | . | 1 | 4 | 1 | |||||
| Speckled Wood | 89 | 3 | . | 1 | 2 | 1 | 1 | 1 | 39 | . | . | . | . | 2 | . | 4 | 13 | 3 | 4 | 1 | 3 | . | |||||
| Marbled White | 377 | . | . | . | . | . | . | . | . | 43 | 128 | 108 | 81 | 15 | 1 | 1 | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | 270 | . | . | . | . | . | . | . | . | 1 | . | 16 | 21 | 81 | 48 | 63 | 6 | . | . | . | . | . | |||||
| Meadow Brown | 286 | . | . | . | . | . | . | 5 | 68 | 16 | 37 | 64 | 40 | 32 | 7 | 9 | 1 | . | . | . | . | . | |||||
| Ringlet | 264 | . | . | . | . | . | . | . | . | 30 | 95 | 71 | 55 | 9 | 3 | 1 | . | . | . | . | . | . | |||||
| Narrow-bordered 5-spot Burnet | NI | . | . | . | . | . | . | . | . | 39 | 24 | . | 2 | . | . | . | . | . | . | . | . | . | |||||
| Latticed Heath | NI | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Silver Y | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | |||||
| Mother Shipton | NI | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||