Hertfordshire & Middlesex Branch
Saving butterflies, moths and our environment
Last updated 8 September 2025
First and last sightings in 2014-2023
Butterfly Conservation First Sightings 2025
| Species | 2024 | 2025 |
|---|---|---|
| Adonis Blue | 24 May | 13 May |
| Brimstone | 25 January | 24 February |
| Brown Argus | 5 May | 24 April |
| Brown Hairstreak | 23 July | 1 July |
| Camberwell Beauty | ||
| Chalk Hill Blue | 8 July | 25 June |
| Clouded Yellow | 1 May | 16 June |
| Comma | 9 March | 3 March |
| Common Blue | 16 May | 28 April |
| Dark Green Fritillary | 21 June | 1 June |
| Dingy Skipper | 8 May | 25 April |
| Essex Skipper | 1 July | 17 June |
| Gatekeeper | 1 July | 10 June |
| Green-veined White | 4 April | 26 March |
| Green Hairstreak | 13 April | 27 April |
| Grizzled Skipper | 26 April | 9 April |
| Holly Blue | 30 March | 26 March |
| Large Skipper | 24 May | 29 April |
| Large Tortoiseshell | 29 June | |
| Large White | 8 April | 20 March |
| Marbled White | 12 June | 31 May |
| Meadow Brown | 28 May | 22 May |
| Orange-tip | 30 March | 31 March |
| Painted Lady | 10 May | 11 May |
| Peacock | 10 January | 21 February |
| Purple Emperor | 26 June | 19 June |
| Purple Hairstreak | 23 June | 9 June |
| Red Admiral | 2 January | 25 January |
| Ringlet | 15 June | 5 June |
| Silver-washed Fritillary | 24 June | 13 June |
| Small Blue | 17 May | 2 May |
| Small Copper | 9 May | 12 April |
| Small Heath | 30 April | 25 April |
| Small Skipper | 18 June | 31 May |
| Small Tortoiseshell | 19 February | 4 March |
| Small White | 20 March | 19 March |
| Speckled Wood | 16 March | 26 March |
| Wall | 7 September | |
| White Admiral | 17 June | 12 June |
| White-letter Hairstreak | 9 June | 2 June |