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16.005 (BF428)

Willow Ermine   

Yponomeuta rorrella
Adult: 3
Migrant. ?Resident.

Identification

Usually distinctive. Care required, potential confusion with other Yponomeuta spp.

Recording Method

Attracted to light. If breeding locally, larval webs should be on willows.

Life cycle

Flight season July to August. Larvae feed gregariously in a web May-June.

Larval foodplants

Willows.

Habitat

Plantations, marshes, farmland.

History

The first record for D&G was one to light in Kirkcudbright (VC73) on 20 July 2025. This was quickly followed by multiple further records in VC 73 and VC74 with counts of up to 18 individuals.

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

VC74 VC73 VC72
Last recorded

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

 East Scotland Butterfly Conservation website - national distribution maps and phenology

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