skip to Main Content

65.016 (BF1659)

Yellow Horned   

Achlya flavicornis
Adult: 1
Resident. Common.


So named through having distinctive orange antennae.

Life cycle

One generation. Overwinters as a pupa, in a cocoon in leaf-litter on the ground. Larvae are present mid-May to mid-July.

Larval foodplants

Downy Birch and Silver Birch.


Woodland and moorland where the larval foodplants are found.

History 1860-2010

W. Douglas Robinson (1870-71) first recorded it for the region when he found two at sugar in July on Almorness (VC73). The Gordon brothers found had it common at light in the early 1900s.

Sir Arthur Duncan (1909-84) during his lifetime had found it at Closeburn, Tynron and Castlehill, Dumfries (all VC72).

During 1974-88 four of the Rothamsted stations contributed 21 records between them. But since then, from 1992 to 2010, the moth has appeared at regular trapped sites at Bargaly Lodge, Carsfad at Dalry, Stroan Wood and Caldons Wood, Kirkconnell Flow (VC73) and Durisdeer (VC72), with just one record in Wigtownshire at Forest Moor.

Which subspecies occurs here is unclear.

164 record(s) from 29 hectad(s) in D&G

VC74 VC73 VC72
Last recorded 2006 2022 2021

 UK Moths website - further information on species (with photos)

 East Scotland Butterfly Conservation website - national distribution maps and phenology

Back To Top