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73.038 ~ 2284 ~ Grey Dagger ~ Acronicta psi
UK Status

Resident. Common

Montgomeryshire Status

A fairly common species (see note for the Dark/Grey Dagger agg.).

Wingspan :  M & F, 34-45mm.

Confusion species

Dark Dagger.
Flight time (Montgomeryshire)


Many habitats, especially woodland.


A wide range of broadleaf trees.

Lifestage data

Overwinters as a pupa in a silken cocoon beneath the bark, in a crevice or under rotten wood. Larva July-early September and September-early November.
Montgomeryshire photos

Photo by DB, 23rd July 2012, Middletown
Confirmed by a genitalia test
Photo by MDH, 3rd Oct 2008, Llanfyllin