
| 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 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | ||||||||
| Large Skipper | NI | . | . | . | . | . | . | . | 10 | 5 | 2 | 2 | . | . | . | . | . | . | . | ||||||||
| Clouded Yellow | 1 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | ||||||||
| Brimstone | NI | . | . | . | 4 | 8 | . | 2 | 3 | 3 | . | . | . | . | 4 | . | 1 | 4 | . | ||||||||
| Large White | NI | . | . | . | . | 1 | . | . | 1 | . | . | . | 1 | 1 | 2 | 1 | . | . | . | ||||||||
| Small White | NI | . | . | . | 1 | . | . | . | . | . | . | 8 | . | 1 | . | 4 | 2 | . | . | ||||||||
| Green-veined White | NI | . | . | 1 | 1 | 3 | 2 | 4 | . | . | . | 5 | 33 | 10 | 36 | 10 | 5 | 7 | . | ||||||||
| Green Hairstreak | NI | . | . | . | 8 | 8 | . | 4 | . | 5 | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | 25 | . | . | . | 4 | 1 | . | . | . | . | . | . | 2 | 2 | 2 | 5 | 5 | 1 | 1 | ||||||||
| Red Admiral | NI | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | 2 | 3 | . | 1 | 1 | ||||||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 4 | . | . | . | ||||||||
| Small Tortoiseshell | NI | . | . | . | 1 | . | . | . | . | . | . | 1 | . | . | . | 1 | 2 | 6 | . | ||||||||
| Peacock | NI | . | . | 2 | . | . | . | . | . | . | . | . | 5 | 2 | . | 1 | . | . | . | ||||||||
| Speckled Wood | 77 | . | . | . | . | 2 | . | 1 | 3 | 7 | 6 | . | 9 | 5 | 8 | 1 | 12 | 7 | 1 | ||||||||
| Wall Brown | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | ||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | 2 | 20 | 8 | 10 | 2 | 1 | . | . | ||||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | 1 | 13 | 14 | 16 | 7 | 3 | 2 | . | . | . | . | ||||||||
| Large Heath | 45 | . | . | . | . | . | . | . | 13 | 19 | 3 | 2 | . | . | . | . | . | . | . | ||||||||