
| 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 | ||||||||||||||||||||||||||
| Large Skipper | 56 | . | . | . | . | . | . | . | 12 | 14 | 7 | 8 | 2 | 1 | . | . | . | . | . | ||||||||
| Dingy Skipper | 16 | . | . | . | 1 | 2 | 5 | 3 | 1 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Clouded Yellow | 3 | . | . | . | . | . | . | 1 | . | . | . | . | . | . | 1 | . | . | . | . | ||||||||
| Brimstone | 36 | . | 1 | . | 1 | . | . | 1 | . | . | . | . | . | 1 | 3 | 11 | 4 | 2 | 2 | ||||||||
| Large White | 165 | . | . | . | . | . | 4 | 2 | . | . | 1 | . | . | . | 4 | 86 | 12 | 2 | . | ||||||||
| Small White | 28 | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | 7 | 2 | 5 | . | ||||||||
| Green-veined White | 59 | . | . | . | 2 | 10 | 15 | 7 | . | 1 | . | . | 3 | 1 | 5 | 3 | . | . | . | ||||||||
| Orange Tip | 16 | . | . | 6 | 3 | 2 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Green Hairstreak | 27 | . | . | 7 | 5 | 6 | 5 | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Northern Brown Argus | NI | . | . | . | . | . | . | . | 36 | 6 | 31 | 21 | 1 | 1 | 1 | . | . | . | . | ||||||||
| Common Blue | NI | . | . | . | . | . | . | 5 | 11 | 3 | 5 | 1 | . | 1 | 3 | 2 | . | . | . | ||||||||
| Holly Blue | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Red Admiral | 91 | . | . | . | . | . | . | 1 | . | . | . | . | . | 1 | 8 | 32 | 17 | 2 | . | ||||||||
| Painted Lady | 872 | . | . | . | . | 11 | 26 | 14 | 4 | 3 | 2 | 2 | 9 | 24 | 336 | 89 | 50 | 29 | 3 | ||||||||
| Small Tortoiseshell | 50 | . | 1 | 2 | 2 | 1 | 2 | 2 | 1 | . | . | . | 11 | 11 | 1 | 2 | 4 | . | . | ||||||||
| Peacock | 311 | . | 6 | 7 | 1 | . | . | . | . | . | . | . | . | 4 | 73 | 99 | 18 | 1 | . | ||||||||
| Comma | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | ||||||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | . | . | 35 | 44 | 18 | 11 | 10 | . | . | . | . | . | . | . | ||||||||
| Pearl-bordered Fritillary | 275 | . | . | . | 9 | 47 | 77 | 52 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| High Brown Fritillary | 293 | . | . | . | . | . | . | . | 9 | 20 | 46 | 94 | 47 | 41 | 15 | 2 | . | . | . | ||||||||
| Speckled Wood | 19 | . | . | . | 1 | 1 | 1 | . | 4 | 1 | . | 2 | . | . | . | 3 | . | . | . | ||||||||
| Wall Brown | 153 | . | . | . | . | . | 4 | 23 | . | . | . | . | . | . | 10 | 22 | 27 | 5 | 6 | ||||||||
| Grayling | 6 | . | . | . | . | . | . | . | . | . | . | 3 | . | 3 | . | . | . | . | . | ||||||||
| Meadow Brown | 858 | . | . | . | . | . | . | . | 40 | 72 | 150 | 178 | 206 | 127 | 29 | 1 | . | . | . | ||||||||
| Small Heath | 102 | . | . | . | . | 7 | 25 | 59 | 8 | . | 1 | 1 | 1 | . | . | . | . | . | . | ||||||||