Acleris emargana

Alternative names
Notch Wing Tortix
Description

Wingspan 18 to 22 mm. The notched and hooked forewings of this species create a very distinctive outline, but the depth of the emargination varies, and can even be absent. Acleris emargana has recently been split from Acleris effractana and national guidelines now call for all records for these two species to be confirmed by gen det.  Where this has not taken place the records should be submitted as Acleris emargana - effractana agg.

Similar Species

Acleris effractana

Identification difficulty
Recording advice

Acleris emargana has recently been split from Acleris effractana and national guidelines now call for all records for these two species to be confirmed by gen det.  Where this has not taken place the records should be submitted as Acleris emargana - effractana agg.

Habitat

Around the larval foodplants.

When to see it

Flying from July to September.

Life History

The larvae feed on the leaves and shoots of trees such as Willow, Poplar and Birch.

UK Status

The species is commonest in the south of Britain, becoming less common further north. In the Butterfly Conservation’s Microlepidoptera Report 2011 this species was classified as common.

VC55 Status

Acleris emargana is fairly frequent, though not really common, in Leicestershire and Rutland. There are no VC55 records at present for the similar Acleris effractana.

Reference
49.071 BF1062

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Leicestershire & Rutland Map

MAP KEY:

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

UK Map