
| 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 | . | . | . | . | . | . | . | 46 | . | 49 | 128 | 32 | . | . | . | . | . | . | ||||||||
| Large Skipper | 46 | . | . | . | . | . | 12 | 15 | 9 | 8 | . | 1 | 1 | . | . | . | . | . | . | ||||||||
| Brimstone | 7 | 1 | 1 | . | . | . | 1 | . | . | 1 | 1 | . | 1 | . | . | . | . | . | . | ||||||||
| Large White | 12 | . | . | 1 | . | . | . | . | . | 2 | . | 3 | . | 1 | . | 2 | 2 | 1 | . | ||||||||
| Small White | 77 | . | . | . | . | . | . | . | 1 | 1 | . | 2 | 7 | 11 | 4 | 37 | 1 | 2 | 2 | ||||||||
| Green-veined White | 32 | 1 | 1 | . | 1 | 2 | . | . | . | 4 | 3 | 3 | . | 8 | 4 | 1 | . | . | . | ||||||||
| Orange Tip | 9 | 2 | 2 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Purple Hairstreak | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | ||||||||
| Black Hairstreak | 1 | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | ||||||||
| Brown Argus | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | ||||||||
| Common Blue | 62 | . | . | 3 | 7 | . | 2 | . | 1 | . | . | . | 18 | 10 | 4 | 4 | 3 | 1 | . | ||||||||
| Red Admiral | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | ||||||||
| Small Tortoiseshell | 12 | 1 | . | . | . | . | . | . | . | 3 | 3 | . | . | . | 1 | 2 | 1 | . | 1 | ||||||||
| Peacock | 27 | 1 | 1 | . | 1 | . | . | . | . | . | . | 7 | 7 | 5 | . | . | . | . | . | ||||||||
| Comma | 6 | . | . | . | . | . | . | . | . | 2 | 3 | . | . | . | . | . | . | 1 | . | ||||||||
| Speckled Wood | 22 | . | . | . | 1 | 3 | . | . | . | . | . | . | 1 | . | 2 | 3 | 8 | 3 | . | ||||||||
| Marbled White | 175 | . | . | . | . | . | . | 10 | 87 | 26 | 35 | 8 | 6 | . | . | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | 216 | . | . | . | . | . | . | . | . | 44 | 47 | 69 | 30 | 7 | 1 | . | . | . | . | ||||||||
| Meadow Brown | 243 | . | . | . | . | . | 7 | 41 | 78 | 48 | 25 | 23 | 10 | 4 | . | . | . | . | . | ||||||||
| Ringlet | 205 | . | . | . | . | . | . | . | 52 | 70 | 31 | 35 | 11 | . | . | . | . | . | . | ||||||||
| Six-spot Burnet | NI | . | . | . | . | . | . | . | . | . | . | 6 | 2 | . | . | . | . | . | . | ||||||||
| Narrow-bordered 5-spot Burnet | NI | . | . | . | . | . | . | 5 | 39 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Silver Y | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 2 | . | . | 1 | ||||||||
| The Cinnabar | NI | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | ||||||||