
| 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 | NI | . | . | . | . | . | . | . | . | 2 | 4 | 1 | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 31 | . | 2 | 6 | 4 | . | 1 | . | 1 | . | 1 | . | 1 | 2 | 4 | 1 | . | . | . | 1 | |||||||
| Large White | 8 | . | . | . | . | . | . | . | 1 | . | . | . | . | 1 | 3 | . | . | . | . | . | |||||||
| Green-veined White | 9 | . | . | . | . | . | . | 1 | 2 | 2 | . | 1 | 1 | . | . | . | . | 1 | . | . | |||||||
| Green Hairstreak | 2 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | 5 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | 2 | . | . | |||||||
| Common Blue | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||
| Red Admiral | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | |||||||
| Small Tortoiseshell | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||
| Peacock | NI | 4 | 1 | . | 3 | . | . | . | . | . | . | . | 1 | 2 | 8 | 1 | . | . | . | . | |||||||
| Comma | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Silver-washed Fritillary | 22 | . | . | . | . | . | . | . | . | . | . | 3 | 4 | 4 | . | 4 | 1 | 1 | . | . | |||||||
| Heath Fritillary | 32 | . | . | . | . | . | . | . | 11 | 8 | 4 | 1 | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 59 | . | 1 | 2 | . | 3 | 2 | 1 | 1 | 6 | 3 | . | 4 | 5 | 6 | 1 | 4 | 3 | 2 | 2 | |||||||
| Wall Brown | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | |||||||
| Marbled White | NI | . | . | . | . | . | . | . | . | . | . | 5 | 1 | 2 | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 90 | . | . | . | . | . | . | . | . | . | . | 5 | 8 | 15 | 25 | 11 | 1 | . | . | . | |||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | . | 4 | 11 | 8 | 5 | 5 | 1 | 1 | 1 | . | . | |||||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | . | 16 | 8 | 2 | 1 | . | . | . | . | . | |||||||