
| 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 | ||||||||||||||||||||||||||
| Silver-spotted Skipper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 18 | 36 | 42 | 24 | 6 | 2 | . | . | ||||
| Large Skipper | . | . | . | . | . | . | . | 8 | 4 | 10 | 2 | 4 | 4 | . | . | . | . | . | . | . | . | . | ||||
| Dingy Skipper | . | . | 16 | 26 | 38 | 44 | 24 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Grizzled Skipper | . | . | 10 | 2 | 8 | 2 | 4 | 2 | . | 4 | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Clouded Yellow | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | 2 | . | . | 2 | ||||
| Brimstone | 4 | 2 | 18 | 2 | . | . | . | 2 | . | . | . | . | 2 | . | 2 | 2 | 2 | 2 | . | 2 | 2 | . | ||||
| Large White | . | . | . | . | 6 | 4 | 2 | 4 | . | . | . | 4 | 2 | 6 | 12 | 2 | . | 2 | . | 2 | 4 | . | ||||
| Small White | . | . | . | . | 12 | 2 | . | . | . | . | 2 | 2 | 2 | 4 | 4 | 4 | 4 | 6 | . | . | . | . | ||||
| Green-veined White | . | . | . | . | 10 | 2 | 4 | 2 | . | . | . | . | . | . | . | . | 2 | . | . | . | . | . | ||||
| Orange Tip | 2 | 6 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Green Hairstreak | . | . | 18 | 10 | 4 | 2 | 4 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Small Copper | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | ||||
| Brown Argus | . | . | . | . | 18 | 12 | 8 | 12 | . | 2 | . | . | . | . | 12 | 10 | 8 | 20 | . | 4 | 6 | 2 | ||||
| Common Blue | . | . | . | . | 88 | 108 | 70 | 18 | 4 | 8 | . | . | . | . | 34 | 20 | 84 | 36 | 28 | 14 | 4 | 6 | ||||
| Chalk-hill Blue | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | 26 | 246 | 176 | 106 | 36 | 10 | 4 | 4 | 2 | ||||
| Adonis Blue | . | . | . | . | 12 | 58 | 86 | 22 | 2 | 2 | . | . | . | . | . | . | 60 | 50 | 16 | 4 | 2 | . | ||||
| Holly Blue | . | . | . | . | 2 | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | ||||
| Red Admiral | 2 | . | . | . | 2 | 2 | . | . | . | . | . | . | 4 | . | . | . | 2 | . | . | . | . | . | ||||
| Painted Lady | . | . | . | . | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | ||||
| Small Tortoiseshell | . | . | . | . | . | . | . | . | . | . | . | . | 2 | . | . | . | 2 | 2 | 2 | . | . | . | ||||
| Peacock | 10 | 6 | 6 | . | . | . | . | 2 | . | . | . | . | . | . | 2 | 2 | . | . | . | . | . | . | ||||
| Comma | . | . | . | . | . | . | . | . | . | . | . | 2 | 2 | . | 2 | . | . | . | . | . | . | . | ||||
| Dark Green Fritillary | . | . | . | . | . | . | . | . | . | 4 | 4 | . | 4 | 6 | . | . | . | . | . | . | . | . | ||||
| Silver-washed Fritillary | . | . | . | . | . | . | . | . | . | 4 | . | 2 | . | 2 | . | 2 | . | 2 | . | . | . | . | ||||
| Speckled Wood | . | . | . | . | . | 2 | . | . | . | . | . | . | . | . | 2 | . | 2 | 2 | 4 | 8 | . | 2 | ||||
| Marbled White | . | . | . | . | . | . | . | . | 2 | 30 | 56 | 56 | 66 | 20 | . | . | . | . | . | . | . | . | ||||
| Gatekeeper/Hedge Brown | . | . | . | . | . | . | . | . | . | . | . | . | . | 52 | 64 | 72 | 2 | 2 | 2 | . | . | . | ||||
| Meadow Brown | . | . | . | . | . | . | . | . | 8 | 34 | 34 | 32 | 18 | 62 | 270 | 276 | 308 | 276 | 132 | 106 | 66 | 14 | ||||
| Small Heath | . | . | . | . | 32 | 8 | 42 | 38 | 30 | 132 | 100 | 96 | 70 | 46 | 16 | 4 | 34 | 48 | 40 | 20 | 24 | 8 | ||||
| Ringlet | . | . | . | . | . | . | . | . | 2 | 4 | 14 | 14 | 6 | 2 | . | . | . | . | . | . | . | . | ||||