
| 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 | . | . | . | . | . | . | . | . | . | . | 5 | 5 | 2 | . | . | 2 | . | . | ||||||||
| Brimstone | NI | 1 | 2 | 5 | 22 | 2 | 6 | . | . | . | . | . | . | . | . | . | 2 | . | . | ||||||||
| Large White | NI | . | . | . | . | . | . | . | 1 | . | 2 | . | 2 | 12 | 14 | . | 1 | . | . | ||||||||
| Small White | NI | . | . | . | . | . | . | . | 3 | 1 | . | . | . | . | . | . | 2 | 1 | . | ||||||||
| Green-veined White | NI | . | . | 3 | 3 | . | 7 | 8 | 5 | 2 | 1 | 2 | 3 | 2 | 10 | . | 2 | . | . | ||||||||
| Orange Tip | 9 | . | . | . | . | . | . | 3 | 6 | . | . | . | . | . | . | . | . | . | . | ||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | 47 | 45 | 11 | 8 | . | . | ||||||||
| Holly Blue | NI | . | . | . | . | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | ||||||||
| White Admiral | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | ||||||||
| Red Admiral | NI | . | 2 | 1 | 1 | . | 2 | . | . | . | 6 | . | . | 3 | . | . | . | . | 4 | ||||||||
| Painted Lady | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | 2 | . | 2 | ||||||||
| Small Tortoiseshell | NI | . | 4 | 3 | 2 | 2 | 3 | 1 | . | . | . | 4 | . | 5 | 4 | 2 | . | 1 | 6 | ||||||||
| Peacock | NI | . | 4 | 3 | 7 | 2 | 4 | 4 | . | . | . | . | . | 4 | 14 | 2 | 4 | 2 | . | ||||||||
| Comma | NI | 3 | 3 | 3 | . | . | 1 | . | . | . | . | . | . | . | . | . | 2 | 2 | 2 | ||||||||
| Speckled Wood | NI | 2 | 3 | 5 | 3 | 4 | 10 | 5 | 8 | 17 | 5 | 14 | 8 | 7 | 22 | 14 | 23 | 8 | 5 | ||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | 20 | 10 | 15 | 31 | 17 | 11 | . | . | ||||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | . | . | 16 | 20 | 27 | 13 | 4 | 3 | 2 | . | ||||||||
| Small Heath | NI | . | . | . | . | . | . | 3 | 3 | 1 | 1 | 4 | . | . | . | . | . | . | . | ||||||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | ||||||||