
| 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 | . | . | . | . | . | . | . | . | . | . | 5 | . | 2 | . | . | . | . | . | . | . | . | |||||
| Large Skipper | NI | . | . | . | . | . | . | . | . | 1 | 2 | 4 | 4 | . | . | . | . | . | . | . | . | . | |||||
| Dingy Skipper | 4 | . | . | . | 2 | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Brimstone | 12 | 1 | 1 | . | 4 | . | . | . | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | |||||
| Large White | 17 | . | 1 | . | 2 | 2 | 3 | 2 | . | . | . | 1 | 4 | 1 | 6 | 1 | . | . | . | . | . | . | |||||
| Small White | 59 | . | 1 | 2 | 1 | 6 | . | . | . | . | . | . | 1 | 13 | 15 | 6 | 4 | 1 | 2 | . | . | . | |||||
| Green-veined White | 34 | . | . | 1 | 1 | 3 | 5 | 2 | . | . | . | . | 3 | 9 | 5 | 9 | 3 | 4 | . | . | . | . | |||||
| Orange Tip | 8 | . | 5 | 4 | 9 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Small Copper | 15 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | 2 | . | 2 | 2 | 2 | . | . | |||||
| Small Blue | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||
| Common Blue | 24 | . | . | . | . | . | . | 1 | 2 | . | . | . | . | . | . | 7 | 5 | 3 | . | . | . | . | |||||
| Holly Blue | 9 | . | . | . | . | . | . | . | . | . | . | . | 2 | 3 | 4 | . | . | . | . | . | . | . | |||||
| White Admiral | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 2 | . | 1 | . | . | . | . | . | . | . | |||||
| Red Admiral | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||
| Small Tortoiseshell | 4 | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||
| Peacock | 52 | 10 | 8 | 2 | 8 | 2 | . | 1 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | |||||
| Comma | 13 | 1 | 1 | 1 | 1 | . | . | . | . | . | . | 4 | . | . | . | . | . | . | . | 2 | 3 | 1 | |||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | . | . | 1 | 4 | 3 | 4 | 1 | 2 | 1 | . | . | . | . | |||||
| Speckled Wood | 116 | . | 4 | 1 | 4 | 3 | 1 | 4 | 3 | 3 | . | 1 | 1 | 2 | 1 | 5 | 5 | 20 | 18 | 6 | 4 | . | |||||
| Marbled White | NI | . | . | . | . | . | . | . | . | . | . | 2 | . | . | 1 | . | . | . | . | . | . | . | |||||
| Grayling | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | |||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | . | 13 | 49 | 53 | 47 | 35 | 2 | 3 | . | . | . | |||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | . | 21 | 25 | 38 | 14 | 21 | 13 | 12 | 7 | 3 | . | . | . | |||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | 33 | 82 | 46 | 39 | 3 | 4 | 2 | . | . | . | . | . | |||||