view of two Silver-washed Fritillariesnectaring on bramble flowers Active

Silver-washed Fritillaries. Photo: Maire Murphy

Size: Large   Wingspan: 74mm

Large, eye-catching butterflies: a lovely sight fluttering through woodland.

Where to see

  • Habitat: Deciduous woodland
  • Caterpillar foodplants: Mainly Common Dog Violet but other violets too.
  • Best places: Widespread where there is woodland. Try Brackett's Coppice, Duncliffe Wood, Garston Wood, Hethfelton, Langton Westwood, Powerstock, or Stubhampton Bottom.

Distribution map

Silver-washed Fritillary was recorded from these 1km squares in Dorset (2015-19).

  •     1 record
  •     2-9 records
  •     10+ records
Explore the Atlas to see historical distribution trends for this species.

When to see

Peaks in July, but can be seen a month either side.

Sightings by month (last 5 years)*

Compare flight times for all species.

This year and last*

Browse the sightings archive.

What to look for

Size is the first distinguishing factor for this butterfly: it is large. The only other butterfly likely to be occasionally seen in the same habitat is the Dark Green Fritillary.

Male upperwings are different to all other fritillaries, having four black lines along the veins of the forewing; these are sex brands which during courtship burst open, showering the female with scent scales.

The underwings have a wash of green, like the Dark-Green Fritillary, but this is broken up by distinctive streaks of white/silver.

Between 5% and 15% of female Silver-Washed in Dorset are a variant called Valezina. Their upper wings are not orange, but a more muted colour, with a bronze green sheen, the underwings have a pinkish tinge, but still with the green wash and white streaks.

Eggs are laid in tree bark crevices or moss. The caterpillars hatch and hibernate in the tree, then in spring they drop to the ground and seek out violets.

Overwinter stage: Caterpillar

Photo gallery

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Find more Silver-washed Fritillary related content, including news and photos.
*Note: The charts shown on this page are drawn only from casual sightings submitted to this website. 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.