
| 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 | ||||||||||||||||||||||||||
| Small Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | |||||||
| Large Skipper | NI | . | . | . | . | . | . | . | . | 1 | . | 1 | . | . | . | . | . | . | . | . | |||||||
| Dingy Skipper | 1 | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Brimstone | 50 | . | 2 | 6 | 1 | 2 | 3 | 2 | 2 | 1 | 3 | . | . | 2 | 1 | 4 | 1 | 6 | 5 | . | |||||||
| Large White | 9 | . | . | . | . | . | 1 | . | 2 | 1 | . | . | . | . | . | 2 | 1 | 1 | . | . | |||||||
| Small White | 7 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | 2 | . | 2 | . | . | |||||||
| Green-veined White | 25 | 1 | . | . | . | 1 | 5 | . | 5 | 2 | . | . | . | . | . | 5 | 2 | 1 | 1 | . | |||||||
| Orange Tip | 2 | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Green Hairstreak | 2 | . | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | . | . | . | . | . | |||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | 2 | |||||||
| Holly Blue | 4 | . | 1 | . | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | |||||||
| Small Tortoiseshell | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||||
| Peacock | NI | . | 1 | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | 1 | 1 | 1 | . | |||||||
| Comma | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | |||||||
| Silver-washed Fritillary | 23 | . | . | . | . | . | . | . | . | . | . | . | . | 3 | 9 | 4 | 2 | . | 2 | . | |||||||
| Heath Fritillary | 52 | . | . | . | . | . | . | 1 | 12 | 13 | 19 | . | . | . | . | . | . | . | . | . | |||||||
| Speckled Wood | 113 | 1 | 6 | 9 | 2 | 2 | 7 | 1 | 6 | 5 | 6 | . | . | 7 | 7 | 9 | 3 | 6 | 10 | 1 | |||||||
| Wall Brown | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | |||||||
| Marbled White | NI | . | . | . | . | . | . | . | . | . | . | 6 | . | 2 | . | . | . | . | . | . | |||||||
| Gatekeeper / Hedge Brown | 124 | . | . | . | . | . | . | . | . | . | . | . | . | 21 | 15 | 34 | 22 | 5 | . | . | |||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | . | 3 | 4 | . | 12 | 1 | 6 | 2 | 1 | . | . | |||||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | 1 | 33 | . | 10 | 3 | . | . | . | . | . | |||||||