Thursday, 16 February 2012

Silver-washed Fritillary Butterfly

Scientific Name: 
Argynnis paphia
Wingspan (mm): 
Male: 69 - 76mm, Female: 73 - 80mm

Description

A fairly large butterfly with a distinctive fast gliding habit, and is the easiest of the fritillaries to identify. Orange ground colour with bold black spots. The black bars on the forewings are present on the males. The underwing is a pale greenish with the characteristic silvery bands from which it earns it's common name. The swooping flight of this large and graceful butterfly is one of the most beautiful sights to be found in woodland during high summer. It is named after the silver streaks on the underside which can be viewed as it stops to feed on flowers such as Bramble. Although the butterfly is seen mostly in sunny glades and rides, it actually breeds in the shadier parts of adjacent woodland. In southern England, a small proportion of females have wings that are bronze-green, known as the form valezina. The Silver-washed Fritillary declined during the twentieth century, especially in England and Wales, but has spread noticeably during recent decades.

Distribution

Widespread across southern England and Wales and more locally in northern England and Ireland.

Habitat

The butterfly breeds in broad-leaved woodland, especially oak woodland or woods with sunny rides and glades. It occasionally uses mixed broad-leaved and conifer plantations and, in parts of south-west England and Ireland, also breeds in wooded hedgerows and sheltered lanes near to woods.

Diet

The main foodplant is Common Dog-violet growing in shady or semi-shady positions on the woodland floor.

Status

UK BAP status: Not listed Butterfly Conservation priority: low European threat status: not threatened

Did You Know?

The Silver-Washed Fritillary females occur in two different forms. They are much more heavily spotted than the males. One of them bears a more greenish buff colour as is known as the Valesina - Scientific name: Argynnis paphia f. valesina. This species chrysalis is difficult to find as it resembles a dead leaf and is often over looked.

Male Image

Female Image