
| 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 | ||||||||||||||||||||||||||
| Wood White | 43 | . | . | 16 | 13 | 4 | 3 | 6 | 1 | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Large White | 9 | . | . | 1 | . | . | . | . | . | . | 1 | 4 | 1 | . | . | 1 | . | . | . | . | |||||||
| Small White | 25 | . | . | . | . | . | . | . | . | 4 | . | 2 | 3 | 6 | 4 | . | 1 | 1 | . | 1 | |||||||
| Green-veined White | 56 | . | 3 | 4 | . | . | . | . | . | . | 1 | 13 | 18 | 2 | 3 | 4 | 1 | 1 | . | . | |||||||
| Small Copper | 6 | . | . | 3 | . | . | . | . | . | . | . | 1 | . | . | . | 1 | 1 | . | . | . | |||||||
| Common Blue | 2100 | . | . | . | . | . | . | 21 | 57 | 213 | 446 | 500 | 566 | 129 | 26 | 28 | 8 | 34 | 27 | 3 | |||||||
| Red Admiral | 90 | . | . | . | . | . | . | . | . | . | . | . | . | 6 | 4 | 16 | 12 | 19 | 13 | 2 | |||||||
| Painted Lady | 8 | . | . | 3 | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | . | . | . | . | |||||||
| Small Tortoiseshell | 42 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 14 | 15 | . | |||||||
| Dark Green Fritillary | 35 | . | . | . | . | . | . | . | 9 | 7 | 9 | 3 | 4 | 3 | . | . | . | . | . | . | |||||||
| Marsh Fritillary | 8 | . | . | . | 2 | 1 | 1 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 103 | 1 | 5 | 2 | . | . | . | 6 | 1 | 4 | 9 | 6 | 2 | 3 | 5 | 13 | 6 | 11 | 7 | 4 | |||||||
| Wall Brown | 1 | . | . | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Grayling | 36 | . | . | . | . | . | . | . | . | 1 | 5 | 10 | 14 | 6 | . | . | . | . | . | . | |||||||
| Meadow Brown | 410 | . | . | . | . | . | . | . | . | 6 | 54 | 136 | 108 | 42 | 15 | 14 | 10 | 8 | . | 1 | |||||||
| Small Heath | 402 | . | . | . | 3 | 14 | 50 | 85 | 28 | 66 | 49 | 53 | 45 | 5 | 2 | . | 1 | . | . | . | |||||||
| Ringlet | 91 | . | . | . | . | . | . | . | 1 | 8 | 38 | 23 | 21 | . | . | . | . | . | . | . | |||||||