First sightings

Which Dorset butterflies emerged when?

These are the earliest dates on which each species of adult butterfly was reported to the website.

Key: Earliest emergence / Latest emergence
Species 2014 2015 2016 2017 2018 2019 2020
Adonis Blue 04 May 07 May 12 May 29 Apr 14 May 08 May 27 Apr
Brimstone 09 Jan 08 Jan 17 Jan 04 Feb 28 Jan 14 Feb 19 Jan
Brown Argus 03 May 30 Apr 06 May 29 Apr 07 May 20 Apr 19 Apr
Brown Hairstreak 12 Jul 21 Jul 20 Jul 12 Jul 15 Jul 20 Jul 12 Jul
Chalkhill Blue 30 Jun 24 Jun 12 Jul 06 Jul 02 Jul 14 Jul 06 Jul
Clouded Yellow 13 Apr 06 Apr 25 Mar 26 Mar 18 Apr 24 Feb 19 Apr
Comma 08 Mar 18 Mar 14 Mar 18 Feb 15 Mar 14 Feb 19 Jan
Common Blue 11 Apr 19 Apr 06 May 14 Apr 30 Apr 29 Apr 26 Apr
Dark Green Fritillary 08 Jun 06 Jun 27 Jun 30 May 02 Jun 14 Jun 25 May
Dingy Skipper 15 Apr 17 Apr 28 Apr 18 Apr 30 Apr 19 Apr 14 Apr
Duke of Burgundy 03 May 12 May 13 May 23 Apr 07 May 04 May 02 May
Essex Skipper 21 Jun 24 Jun 06 Jul 26 Jun 22 Jun 14 Jun 14 Jun
Gatekeeper 28 Jun 24 Jun 25 May 13 Jun 20 Jun 28 Jun 09 Jun
Glanville Fritillary - - - - - 01 Jun -
Grayling 29 Jun 24 Jun 05 Jul 18 Jun 23 Jun 27 Jun 14 Jun
Green Hairstreak 10 Apr 13 Apr 09 Apr 07 Apr 25 Apr 15 Apr 08 Apr
Green-veined White 01 Apr 08 Apr 11 Apr 03 Apr 14 Apr 24 Mar 16 Mar
Grizzled Skipper 15 Apr 16 Apr 20 Apr 09 Apr 20 Apr 19 Apr 08 Apr
Holly Blue 08 Mar 06 Apr 12 Apr 25 Mar 05 Apr 12 Feb 25 Mar
Large Skipper 26 May 28 May 26 May 24 May 26 May 26 May 07 May
Large Tortoiseshell - - - - - 24 Feb 03 Mar
Large White 13 Apr 05 Apr 31 Mar 30 Mar 17 Apr 24 Mar 24 Mar
Long-tailed Blue - 29 Aug 12 Sep - - 03 Aug 10 Aug
Lulworth Skipper 21 May 21 May 27 May 10 May 18 May 11 May 19 May
Marbled White 08 Jun 11 Jun 07 Jun 04 Jun 06 Jun 05 Jun 19 May
Marsh Fritillary 06 May 04 May 08 May 10 May 14 May 06 May 26 Apr
Meadow Brown 01 Jun 04 Jun 14 May 24 May 27 May 30 May 17 May
Orange Tip 30 Mar 19 Mar 11 Apr 28 Mar 14 Apr 24 Mar 26 Mar
Painted Lady 01 Mar 11 Apr 03 Jan 16 Feb 22 Apr 09 Jan 03 Apr
Peacock 02 Jan 09 Jan 15 Feb 19 Jan 12 Jan 01 Jan 05 Jan
Purple Emperor 05 Jul 18 Jul 13 Jul 08 Jul 26 Jun 18 Jun 23 Jun
Purple Hairstreak 22 Jun 01 Jul 22 Jun 17 Jun 17 Jun 20 Jun 07 Jun
Red Admiral 08 Jan 02 Jan 06 Jan 04 Jan 05 Jan 01 Jan 02 Jan
Ringlet 20 Apr 21 May 16 Jun 10 Jun 10 Jun 18 Jun 05 Jun
Silver-spotted Skipper 30 Jul 08 Aug 06 Aug 06 Aug 02 Aug 28 Jul 03 Aug
Silver-studded Blue 08 Jun 08 Jun 06 Jun 03 Jun 08 Jun 01 Jun 25 May
Silver-washed Fritillary 15 Jun 24 Jun 21 Jun 14 Jun 21 Jun 26 Jun 07 Jun
Small Blue 06 May 28 Apr 23 Apr 21 Apr 13 May 04 May 25 Apr
Small Copper 30 Mar 12 Apr 18 Apr 27 Mar 18 Apr 26 Mar 24 Mar
Small Heath 29 Apr 29 Apr 06 May 18 Apr 07 May 19 Apr 22 Apr
Small Pearl-bordered Fritillary 07 Jun 13 Jun 10 Jun 04 Jun 11 Jun 09 Jun 27 May
Small Skipper 13 Jun 08 Jun 20 Jun 12 Jun 28 May 01 Jun 27 May
Small Tortoiseshell 09 Jan 02 Jan 06 Jan 18 Jan 16 Feb 13 Jan 19 Jan
Small White 01 Mar 22 Mar 10 Mar 13 Mar 26 Mar 24 Mar 01 Mar
Speckled Wood 07 Feb 06 Mar 25 Mar 25 Mar 16 Apr 24 Mar 21 Mar
Swallowtail 02 Jul 15 Aug - - - 05 Aug 09 Aug
Wall Brown 14 Apr 19 Apr 17 Apr 19 Apr 04 May 13 Apr 08 Apr
White Admiral 18 Jun 24 Jun 21 Jun 14 Jun 15 Jun 26 Jun 04 Jun
White-letter Hairstreak 14 Jun 25 Jun 02 Jul 15 Jun 18 Jun 24 Jun 15 Jun
Wood White - - - 26 May 09 Jul - 19 Apr