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Glanville Fritillary (Melitaea cinxia)

On this page, we have made available all the information we have for this species

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Picture of Glanville Fritillary
© Eddie John

In Britain the Glanville Fritillary only occurs in the extreme south on crumbling cliffs where it's main foodplant, Narrow-leaved Plantain (Plantago lanceolata), grows in warm south-facing situations. (For further details on this species see

Family : Nymphalidae

Status : Stable

Status details :
Status since 1989 is Stable with a decrease of -27.6%
Status over the last 20 years is Stable with a increase of 116%
Status over the last 10 years is Stable with a increase of 157%

Log collated index plot

Species Log Collated Index Plot

This chart shows the index of abundance (LCI = Log Collated Index) over time. It shows fluctuations in populations from year to year, and is scaled so that the average index over the whole series is equal to 2 (horizontal line). For greater detail about how this index is derived, click on the green question mark above.

Trend description :
The Glanville Fritillary has occured regularly at only one UKBMS site since monitoring began, on the Isel of Wight, where its population has remained stable for most of the recording period (from 1989). New sites both within its natural range and where it has been introduced have been added and the short-term trend for Glanville Fritillary is a highly significant increase with an exceptionally good year in 2011 during which it likely benefited from the extremely warm spring that year.

This map shows the distribution between 1995 and 2016. Data is derived from the Butterflies for the New Millenium dataset via the NBN Gateway

Phenology plot
Species Phenology Plot

Phenology plot

This chart shows the average number of butterflies seen on transects between Arpil and October across all sites (fitted values from a Generalised Additive Model). The blue line gives average counts over the full BMS series (1976 to date) and the red line gives the average for the last year.

Species abundance map


This map shows symbols for the mean abundance at transect sites, with the colour of the symbol reflecting the level of abundance. Means are over all years. Grey background squares are the occupied cells as shown by the Butterflies for the New Millenium over the previous ten year period.


In total, Glanville Fritillary has been recorded from 49 transects in the Butterfly Monitoring Scheme. Of these, annual indices of abundance have been calculated from 35 sites, with an average index of 0 individuals per site.

For 0 of these sites, Glanville Fritillary has been recorded well enough to calculate annual indices of abundance in more years, allowing trends to be calculated.

In 2018, 6 individuals were recorded from 2 sites, producing annual indices at 2 of these.

The UK Butterfly Monitoring Scheme is organized and funded by Butterfly Conservation (BC), the Centre for Ecology and Hydrology (CEH), the British Trust for Ornithology (BTO), and the Joint Nature Conservation Committee (JNCC). The UKBMS is indebted to all volunteers who contribute data to the scheme.