Species Details

ABH: 65.016

BF: 1659

Family: Drepanidae

Subfamily: Thyatirinae

Taxon: Achlya flavicornis

=Achlya flavicornis galbanus

=Achlya flavicornis scotica

Authority: (Linnaeus, 1758)

Vernacular: Yellow Horned

Account: Common in woodland, and on heathland and moorland throughout England and Wales Characterised by orange coloration of antennae. Larva feeds on Downy and Silver Birch, over-wintering as a pupa.

Accounts provided by and used with the kind permission of Mike Wall, Hampshire County Moth Recorder. These will in due course be gradually replaced with species accounts with a Surrey context.

Wingspan: 39 — 44 mm

Surrey Flight Period: 15 Feb (2024) — 11 May (2001)

The flight period of overwintering adults are not given. See the flight chart below the distribution map.

Foodplant: Betula pendula (Silver Birch), Betula sp. (a birch).

Foodplant accounts are from the HOSTS database — Natural History Museum, London, UK. (CC0).

Status: Least Concern (LC)

UK BAP:

WCA:

Click here to view the full geology map of Surrey.

Verification Grade: 1 — Relatively easily identified 👌

Further Information: https://www.ukmoths.org.uk/species/achlya-flavicornis/

Statistics

* Based on adult records only.

Records: 592

Individuals: 987

Earliest Year: 1886

Latest Year: 2025

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