22/10/2026
FRIDAY FLUTTER #42: Species Of The Week – Heath Fritillary (Melitaea athalia)
The Heath Fritillary is a species of Butterfly in the family Nymphalidae. It is found throughout the Palaearctic from western Europe to Japan, in heathland, grassland, and in coppiced woodland. It is considered a threatened species in the UK and Germany, but not Europe-wide or globally. This rare Butterfly was on the brink of extinction in the 1970s, but conservation action turned its fortunes around. It is protected in the UK under the Wildlife and Countryside Act, 1981 and a priority species under the UK Post-2010 Biodiversity Framework. Sadly it is now one of our rarest Butterflies even though it has been saved from the brink of extinction by the concerted action of conservationists.
It is confined to a small number of sites in Somerset, Devon, Cornwall and Kent, and has also been reintroduced into sites in Essex. Although very local in its distribution, this Butterfly can be seen in large numbers in good years. It forms discrete colonies and rarely strays from its main breeding grounds.
The upperside is predominantly dark brown and orange brown, with the orange-brown spots delineated by dark brown (along and across the wing veins); there is a white fringe to the wings through which the dark brown extends. The upperside of the body is a similar dark brown to the colour on the wing, and the base of both wings is dark brown. The underside shows bands of red and off-white, again with each vein dark brown and each colour delineated by dark brown. The pattern of white spots at the base of the hindwing (visible at rest) is diagnostic for identification.
The Heath Fritillary is distinguished by its dusky wing colours, but is variable in terms of both the colour and the pattern of the wings. It is restricted to a few specialised habitats where it flies close to the ground with characteristic flits and glides. The species has historically been linked with the traditional practice of woodland coppicing, giving it the nickname of the 'Woodman's Follower' as it follows the cycle of cutting around a wood.
This Butterfly prefers sunny, warm and sheltered habitats of two main types; coppiced or newly felled woodland on acid soils (where Common Cow-wheat is abundant), and sheltered heathland valleys on Exmoor (where Common Cow-wheat grows as scattered plants on mineral soils amongst vegetation dominated by Bilberry). It is known for a low, flutter-and-glide flight pattern. They are generally on the wing May to July (sometimes stretching into August). Heath Fritillary are a small Butterfly with a typical wing span of 39 to 50 mm.
I visited several of the known locations of reintroduction in the course of four years trying to spot a Heath Fritillary. I finally got lucky on the fourth year when visiting a Cornwall site, there were several on the wing and I managed a few decent photo's. It was well worth the time and effort because they are so beautiful, and being so rare to see one is amazing, to see several is a miracle!
Have you ever seen a Heath Fritillary Butterfly?
Acknowledgements:
Featured Photo by Butterfly Whisperer UK
(the Butterfly branch of Utopia Photography)
aka The Butterfly Lady.
Disclaimer: This feature was written from a combination of my own words plus some information borrowed from various other sources. ..................