
| 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 Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | 8 | 1 | . | . | . | . | . | . | . | . | |||||
| Essex Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | |||||
| Large Skipper | 3 | . | . | . | . | . | . | . | 1 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 25 | . | 6 | 2 | . | 2 | 8 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||
| Brimstone | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Large White | NI | . | . | . | . | . | . | 1 | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | |||||
| Small White | 11 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 5 | . | 1 | 1 | . | |||||
| Green-veined White | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | . | . | . | . | . | . | . | |||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | . | . | 1 | 2 | . | |||||
| Small Blue | 3 | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||
| Brown Argus | 17 | . | . | . | . | . | 1 | . | 1 | . | . | . | . | 3 | 4 | 2 | . | 1 | . | . | 1 | . | |||||
| Common Blue | 97 | . | . | . | . | 4 | 10 | 4 | 3 | 1 | . | . | 1 | 12 | 14 | 22 | 2 | 9 | 1 | . | . | . | |||||
| Chalk-hill Blue | 25 | . | . | . | . | . | . | . | . | . | . | . | 1 | 3 | 8 | 7 | 1 | 1 | . | . | . | . | |||||
| Adonis Blue | 105 | . | . | . | . | 15 | 13 | 7 | . | 1 | . | . | . | . | . | 14 | 15 | 14 | 11 | 5 | 2 | . | |||||
| Red Admiral | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Painted Lady | 14 | . | . | . | . | . | . | . | . | 1 | 1 | 3 | 1 | 2 | 1 | 1 | . | . | . | . | . | . | |||||
| Small Tortoiseshell | 82 | . | . | . | . | . | . | 1 | 7 | 5 | 2 | 1 | . | 16 | 11 | 4 | 1 | 2 | 3 | 6 | 7 | 7 | |||||
| Peacock | 5 | 1 | . | 1 | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||
| Comma | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||
| Dark Green Fritillary | 6 | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | |||||
| Marsh Fritillary | 1 | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Wall Brown | 16 | . | 1 | 4 | . | . | . | . | . | . | . | . | . | 1 | . | 4 | 3 | 1 | . | . | . | 1 | |||||
| Marbled White | NI | . | . | . | . | . | . | . | 1 | 3 | 19 | 16 | 27 | . | . | . | . | . | . | . | . | . | |||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | 7 | 1 | 1 | 1 | . | . | . | . | . | |||||
| Meadow Brown | NI | . | . | . | . | . | . | . | 2 | 10 | 18 | 15 | 33 | 16 | 7 | 14 | 2 | 1 | 1 | . | . | . | |||||
| Small Heath | 54 | . | . | . | . | 1 | 3 | 2 | 4 | 2 | 3 | . | . | 2 | 5 | 9 | 12 | 9 | . | . | . | . | |||||
| Ringlet | 95 | . | . | . | . | . | . | . | . | . | 36 | 23 | 18 | . | . | . | . | . | . | . | . | . | |||||
| Six-spot Burnet | NI | . | . | . | . | . | . | . | . | . | 1 | . | 25 | 5 | . | . | . | . | . | . | . | . | |||||
| Five-spot Burnet | NI | . | . | . | . | . | 2 | . | . | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | |||||
| Humming-bird Hawk-moth | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||
| Silver Y | NI | . | . | . | . | . | . | . | 3 | . | . | . | . | 2 | 2 | 3 | . | 2 | 4 | 1 | 1 | . | |||||
| Mother Shipton | NI | . | . | . | . | . | 3 | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Burnet Companion | NI | . | . | . | . | . | 2 | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||