
| 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 | 10 | . | . | . | . | . | . | 1 | 3 | 4 | 1 | 1 | . | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | 19 | . | . | . | 4 | 5 | 5 | . | . | . | 1 | . | 4 | . | . | . | . | . | . | . | |||||||
| Brimstone | 38 | . | 2 | 1 | . | 2 | . | . | . | . | . | . | . | 4 | 2 | 3 | 10 | 8 | . | 3 | |||||||
| Large White | 290 | . | 1 | 10 | 31 | 13 | 3 | 4 | 3 | 3 | 3 | 2 | 20 | 28 | 57 | 26 | 39 | 17 | 11 | 13 | |||||||
| Small White | 82 | . | . | . | 9 | . | 4 | . | . | . | . | . | 1 | 5 | 20 | 5 | 34 | . | . | 4 | |||||||
| Green-veined White | 28 | . | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | 25 | . | . | . | |||||||
| Orange Tip | 12 | . | . | 7 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 40 | 1 | 7 | 5 | 10 | 7 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||
| Northern Brown Argus | 52 | . | . | . | . | . | . | 9 | 5 | 10 | 6 | 17 | 2 | . | 2 | 1 | . | . | . | . | |||||||
| Common Blue | 8 | . | . | . | . | . | . | . | 3 | . | 1 | . | . | 1 | . | 3 | . | . | . | . | |||||||
| Holly Blue | 15 | 1 | 1 | 4 | . | . | . | . | . | . | . | . | . | 2 | 3 | . | . | 1 | . | . | |||||||
| Red Admiral | 104 | . | . | . | 1 | . | . | . | . | . | . | . | 4 | 20 | 4 | 3 | 57 | 15 | . | . | |||||||
| Painted Lady | 645 | . | . | . | 3 | 11 | 11 | 5 | 3 | 2 | . | . | 2 | 124 | 255 | 71 | 106 | 34 | 1 | 17 | |||||||
| Small Tortoiseshell | 92 | . | 7 | 1 | 13 | . | 1 | . | . | . | 2 | 2 | 11 | 27 | 18 | . | 2 | . | . | . | |||||||
| Peacock | 142 | 5 | 5 | 3 | . | 1 | . | . | . | . | . | . | . | 6 | 12 | 19 | 73 | 9 | . | . | |||||||
| Comma | 8 | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Pearl-bordered Fritillary | 102 | . | . | 7 | 31 | 20 | 19 | 15 | 1 | 5 | . | . | . | . | . | . | . | . | . | . | |||||||
| Pearl-bordered Fritillary | 21 | . | 1 | 2 | 4 | 8 | 1 | . | . | 2 | 1 | . | . | . | . | . | . | . | . | . | |||||||
| High Brown Fritillary | 185 | . | . | . | . | . | . | . | . | 9 | 13 | 48 | 33 | 74 | 29 | 7 | . | . | . | . | |||||||
| Speckled Wood | 5 | . | . | . | . | . | . | 1 | . | . | . | . | 1 | . | . | . | . | 3 | . | . | |||||||
| Wall Brown | 132 | . | . | . | 12 | 35 | 7 | 1 | 3 | . | . | . | . | 3 | . | 2 | 36 | 18 | 9 | 6 | |||||||
| Grayling | 11 | . | . | . | . | . | . | . | 3 | . | . | 6 | . | . | . | 2 | . | . | . | . | |||||||
| Meadow Brown | 298 | . | . | . | . | 1 | . | . | 10 | 23 | 25 | 65 | 53 | 41 | 67 | 13 | . | . | . | . | |||||||
| Small Heath | 165 | . | . | . | . | 52 | 80 | 13 | 6 | 6 | 3 | 3 | . | 1 | . | . | 1 | . | . | . | |||||||