Pammene fasciana

Alternative names
Acorn Piercer

Wingspan 13-17 mm. An attractive species which, when fresh, shows a series of bluish metallic and tawny markings with a rosy flush to the whitish ground colour.

Identification difficulty

Various habitats, particularly well wooded areas containing Oak or Sweet Chestnut.

When to see it

The moths fly in June and July and are partially diurnal with the males in particular flying at sunrise and in the afternoon.

Life History

The larvae feed internally in the acorns of Oak and the nuts of Sweet Chestnut.

UK Status

Widely distributed throughout Britain, it is commonest in the south, becoming gradually scarcer further north. In the Butterfly Conservation’s Microlepidoptera Report 2011 this species was classified as common.

VC55 Status

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

49.367 BF1236

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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