Lesser Swallow Prominent - Pheosia gnoma


Wingspan 45-50 mm. This species is very similar to Swallow Prominent (P. tremula) but can be identified with care. It is brown and white with a white triangular wedge near the corner of the hind wing, and it lacks the wavy white line in the blackish area of the hindwing found in P. tremula.

Identification difficulty

Woodland, heathland, parks and gardens.

When to see it

There are two generations - on the wing in May and June and later in August.

Life History

The larvae feed on Birch and overwinter as pupae underground.

UK Status

Fairly common moth throughout most of Britain. In a recent survey to determine the status of all macro moths in Britain this species was classified as common.

VC55 Status

Fairly common in Leicestershire and Rutland. L&R Moth Group status = A (common and resident)

71.018 BF2006

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Leicestershire & Rutland Map


Yellow squares = NBN records (all known data)
Coloured circles = NatureSpot records: 2020+ | 2015-2019 | pre-2015

UK Map