Ypsolopha alpella

Alternative names
Barred Smudge

Wingspan about 16 mm.

Similar Species

It closely resembles Ypsolopha sylvella, but with generally paler ground colour and less obvious fasciae. Care has to be taken with identification.

Identification difficulty
Recording advice

Unless identified by a recognised expert, a photo is required. If the photo doesn't show the key ID features then in the comments box describe the size and identifying characters you have observed.


Areas where oak is present.

When to see it

The adults fly during August when they are attracted to light. 

Life History

The larva feeds in a slight web on the leaves of oak (Quercus) and pupates in a boat-shaped cocoon typical of the genus, amongst the bark.

UK Status

Mainly recorded in the southern part of England and Wales where it is local in distribution. In the Butterfly Conservation's Microlepidoptera Report 2011 this species was classified as local.

VC55 Status

Infrequently recorded in Leicestershire and Rutland.

17.008 BF458

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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