
| 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/Essex Skipper | 52 | . | . | . | . | . | 1 | 3 | 1 | 11 | 13 | 9 | 2 | . | . | . | . | . | |||||||||
| Silver-spotted Skipper | NI | . | . | . | . | . | . | . | . | . | . | . | 2 | 1 | . | . | . | . | |||||||||
| Large Skipper | NI | . | . | . | 3 | 12 | 2 | 1 | 3 | . | . | . | . | . | . | . | . | . | |||||||||
| Dingy Skipper | NI | . | 1 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Grizzled Skipper | 4 | . | . | 3 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Brimstone | 76 | 12 | 9 | 2 | 5 | . | 2 | 1 | . | 1 | 15 | 9 | 9 | . | . | 1 | 1 | 2 | |||||||||
| Large White | 95 | . | 1 | . | . | 2 | . | 9 | 3 | 13 | 14 | 21 | 17 | 10 | 2 | 2 | . | . | |||||||||
| Small White | 102 | 1 | . | . | . | 1 | 1 | 18 | 22 | 10 | 8 | 9 | 18 | 2 | 5 | 5 | . | . | |||||||||
| Green-veined White | 60 | . | 1 | 3 | 1 | 2 | . | 1 | 2 | 26 | 5 | 5 | 3 | 7 | 1 | . | . | . | |||||||||
| Orange Tip | NI | . | 3 | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Green Hairstreak | 5 | 1 | 1 | 1 | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Small Copper | 12 | . | 1 | 2 | . | . | . | . | . | 1 | 1 | 5 | 1 | 1 | . | . | . | 1 | |||||||||
| Small Blue | NI | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | |||||||||
| Brown Argus | NI | . | . | . | . | 2 | 1 | . | . | . | . | . | . | 1 | 1 | 1 | . | . | |||||||||
| Common Blue | 169 | . | . | 30 | 23 | 25 | 8 | 1 | . | . | . | 2 | 6 | 15 | 8 | 9 | 6 | 5 | |||||||||
| Chalk-hill Blue | 98 | . | . | . | . | . | . | . | 1 | 3 | 24 | 23 | 25 | 19 | . | 2 | . | . | |||||||||
| Holly Blue | NI | 2 | . | . | . | . | . | . | . | . | 2 | 2 | 2 | . | . | . | . | . | |||||||||
| Red Admiral | 7 | . | . | . | . | . | . | . | . | 1 | 2 | . | . | 1 | 1 | 1 | . | . | |||||||||
| Painted Lady | 3 | . | . | . | . | . | . | . | . | . | . | . | . | 1 | . | . | 1 | . | |||||||||
| Small Tortoiseshell | 24 | 1 | . | . | . | . | 2 | 4 | . | 7 | 1 | 2 | . | . | . | . | 5 | . | |||||||||
| Peacock | NI | . | 3 | . | . | . | . | . | . | . | 2 | 2 | 1 | . | . | . | 1 | . | |||||||||
| Comma | 1 | . | . | . | . | . | . | . | . | . | . | 1 | . | . | . | . | . | . | |||||||||
| Speckled Wood | 3 | . | . | . | . | 1 | . | . | . | . | . | . | 1 | 1 | . | . | . | . | |||||||||
| Marbled White | 132 | . | . | . | . | 6 | 52 | 36 | 20 | 18 | . | . | . | . | . | . | . | . | |||||||||
| Gatekeeper / Hedge Brown | 144 | . | . | . | . | . | . | 10 | 11 | 43 | 45 | 14 | 17 | 4 | . | . | . | . | |||||||||
| Meadow Brown | 612 | . | . | . | 8 | 41 | 73 | 89 | 42 | 89 | 75 | 87 | 52 | 40 | 7 | 4 | 2 | 12 | |||||||||
| Small Heath | 143 | . | . | 13 | 10 | 36 | 36 | 14 | 1 | 4 | . | 2 | 3 | 6 | 1 | 2 | 1 | 8 | |||||||||
| Ringlet | 218 | . | . | . | . | 10 | 86 | 61 | 19 | 41 | . | 1 | . | . | . | . | . | . | |||||||||
| Latticed Heath | NI | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | |||||||||
| Silver Y | NI | . | 1 | . | . | . | . | . | . | . | 6 | 1 | . | . | . | . | . | . | |||||||||