
| 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 | NI | . | . | . | 3 | 5 | 6 | 3 | . | . | . | 1 | . | . | . | . | . | . | . | ||||||||
| Large White | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | ||||||||
| Small White | NI | . | . | . | . | . | . | . | . | . | . | 12 | 6 | 10 | 9 | . | 2 | 1 | 2 | ||||||||
| Green-veined White | NI | . | . | . | . | . | 1 | . | . | . | . | 1 | 15 | 13 | 23 | 1 | 9 | 5 | . | ||||||||
| Small Copper | NI | . | . | 1 | . | 1 | . | . | . | . | . | . | . | 1 | 3 | . | 5 | . | 1 | ||||||||
| Common Blue | 281 | . | . | . | . | . | . | 2 | 11 | 10 | 11 | 65 | 35 | 82 | 30 | 1 | 5 | 13 | 5 | ||||||||
| Red Admiral | 91 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 6 | 23 | 30 | 20 | ||||||||
| Painted Lady | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | ||||||||
| Small Tortoiseshell | 63 | . | . | 2 | . | . | . | . | . | . | . | . | 3 | . | 8 | 1 | 3 | 24 | 14 | ||||||||
| Peacock | 30 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 5 | 7 | 12 | ||||||||
| Dark Green Fritillary | 25 | . | . | . | . | . | . | . | 3 | 3 | 1 | 3 | 5 | 4 | 4 | . | . | . | . | ||||||||
| Marsh Fritillary | NI | . | . | . | . | . | 4 | 1 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| Speckled Wood | 60 | . | . | 1 | 7 | 8 | 1 | . | 2 | . | 1 | . | 2 | . | 1 | 1 | 7 | 10 | 5 | ||||||||
| Wall Brown | 9 | . | . | . | . | 2 | . | . | . | . | . | . | . | . | 1 | 1 | 2 | 2 | . | ||||||||
| Grayling | 22 | . | . | . | . | . | . | . | . | . | 2 | 1 | 3 | 5 | 10 | . | . | 1 | . | ||||||||
| Meadow Brown | 282 | . | . | . | . | . | . | . | . | 1 | 4 | 34 | 46 | 85 | 63 | 4 | 21 | 12 | 8 | ||||||||
| Small Heath | 203 | . | 1 | . | 1 | . | 1 | 7 | 12 | 20 | 18 | 54 | 11 | 30 | 12 | 1 | 4 | 6 | 6 | ||||||||
| Ringlet | 110 | . | . | . | . | . | . | . | 2 | 26 | 28 | 38 | 12 | 3 | . | . | . | . | . | ||||||||