Sightings summary: 2019

Annual overview of butterflies reported to the Dorset branch website*

89,120 adult butterflies of 49 species reported to the website this year.

Recording activity

Number of species records by date seen (scroll right for key).

Top butterflies

TIP Click chart segments to see numbers reported.

Species count

Total records by species.

First sightings

Earliest dates on which adult butterflies were reported to the website.

Species Date
Adonis Blue 08 May
Brimstone 14 Feb
Brown Argus 20 Apr
Brown Hairstreak 20 Jul
Chalkhill Blue 14 Jul
Clouded Yellow 24 Feb
Comma 14 Feb
Common Blue 29 Apr
Dark Green Fritillary 14 Jun
Dingy Skipper 19 Apr
Duke of Burgundy 04 May
Essex Skipper 14 Jun
Gatekeeper 28 Jun
Glanville Fritillary 01 Jun
Grayling 27 Jun
Green Hairstreak 15 Apr
Green-veined White 24 Mar
Grizzled Skipper 19 Apr
Holly Blue 12 Feb
Large Skipper 26 May
Large Tortoiseshell 24 Feb
Large White 24 Mar
Long-tailed Blue 03 Aug
Lulworth Skipper 11 May
Marbled White 05 Jun
Marsh Fritillary 06 May
Meadow Brown 30 May
Orange Tip 24 Mar
Painted Lady 09 Jan
Peacock 01 Jan
Purple Emperor 10 Jul
Purple Hairstreak 20 Jun
Red Admiral 01 Jan
Ringlet 18 Jun
Silver-spotted Skipper 28 Jul
Silver-studded Blue 01 Jun
Silver-washed Fritillary 26 Jun
Small Blue 04 May
Small Copper 26 Mar
Small Heath 19 Apr
Small Pearl-bordered Fritillary 09 Jun
Small Skipper 01 Jun
Small Tortoiseshell 13 Jan
Small White 24 Mar
Speckled Wood 24 Mar
Swallowtail 05 Aug
Wall Brown 13 Apr
White Admiral 26 Jun
White-letter Hairstreak 24 Jun

Flight times

Duration between earliest and latest reported sightings of adult butterflies.

Seen a butterfly? Report a sighting

*Please note: The charts shown on this page are drawn only from casual sightings submitted to this website. They are therefore not statistically significant, but do serve as an indication of what’s going on in the Dorset butterfly world. The records from this website will be added to a lot more data collected throughout the year, and used to compile the five-yearly Butterfly Atlases for Dorset and the UK. These are vitally important because they show the location of species and, over time, measure distribution changes and the possible effects of climate change. This gives us the information we need to help various species in appropriate ways.

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