
| 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 | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | . | . | |||||||||
| Brimstone | NI | 4 | . | 16 | 6 | 10 | . | 14 | 1 | 2 | 1 | . | 2 | 7 | . | . | 2 | . | |||||||||
| Large White | NI | . | . | . | . | . | . | 1 | 1 | . | . | . | . | 4 | 3 | 2 | 1 | . | |||||||||
| Small White | NI | . | . | . | . | . | . | 1 | 1 | . | . | . | . | . | 1 | . | . | . | |||||||||
| Green-veined White | NI | . | . | . | 5 | 1 | 3 | 2 | 6 | 1 | 1 | 1 | 1 | 13 | 3 | . | . | . | |||||||||
| Orange Tip | 3 | . | . | 1 | . | . | . | . | 1 | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 3 | . | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | . | . | |||||||||
| Small Copper | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | 1 | 1 | |||||||||
| Common Blue | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Red Admiral | NI | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 2 | |||||||||
| Painted Lady | 9 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | 1 | 2 | |||||||||
| Small Tortoiseshell | 9 | 1 | 2 | . | 1 | . | . | . | . | . | . | . | . | . | 1 | 1 | . | . | |||||||||
| Peacock | NI | 2 | . | 3 | 1 | . | 1 | 1 | . | . | . | . | . | 2 | 2 | 2 | . | . | |||||||||
| Comma | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 1 | |||||||||
| Small Pearl-bordered Fritillary | NI | . | . | . | . | . | . | . | . | 7 | 7 | . | . | . | . | . | . | . | |||||||||
| Pearl-bordered Fritillary | NI | . | . | . | . | . | . | 3 | 7 | . | . | . | . | . | . | . | . | . | |||||||||
| Silver-washed Fritillary | NI | . | . | . | . | . | . | . | . | . | . | 2 | . | 3 | . | . | 1 | . | |||||||||
| Marsh Fritillary | NI | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | . | . | |||||||||
| Heath Fritillary | NI | . | . | . | . | . | . | . | . | 18 | 28 | 3 | . | . | . | . | . | . | |||||||||
| Speckled Wood | 98 | . | 3 | 4 | 7 | 5 | 2 | 2 | 3 | 1 | 4 | . | . | 12 | 8 | 9 | 7 | 7 | |||||||||
| Wall Brown | 13 | . | . | . | . | . | . | . | 1 | . | . | . | . | 3 | 4 | . | . | . | |||||||||
| Marbled White | NI | . | . | . | . | . | . | . | . | . | . | 6 | 2 | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | NI | . | . | . | . | . | . | . | . | . | . | . | 8 | 29 | 15 | 1 | . | . | |||||||||
| Meadow Brown | NI | . | . | . | . | . | . | . | . | . | 4 | 17 | 3 | 5 | . | . | . | . | |||||||||
| Small Heath | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Ringlet | NI | . | . | . | . | . | . | . | . | . | 7 | 67 | 5 | 1 | . | . | . | . | |||||||||