Noctuidae: Acronictinae

2281 (ABH73.036) Alder Moth Acronicta alni, (Linnaeus, 1767)


 Photo © Barry Dickerson
Alder Moth
 Photo © Barry Dickerson
Llanbedr, N Wales, July 2010
Llanbedr, N Wales, July 2010
 Photo © Nick Greatorex-Davies

General Information

Pupates burrowing into decaying wood.

Overwinters as Overwinters as a pupa.
Both sexes come to light.

Forewing length: 16-19mm.
Foodplant(s): birches (Betula spp.), Alder (Alnus glutinosa), Goat Willow (Salix caprea), oaks (Quercus spp.), elms (Ulmus spp.), broadleaved trees
Flying: One generation, May-June
UK Presence: Resident
National status: Local


Broadleaved woodland, heathland, carr, fens, and scrub.

Regional Information

Recorded in 32 (11.9%) of the 270 2km squares of Huntingdonshire.

Last recorded in June 2023

Recorded date range (Adult): 26 April to 03 July

Larva Type:
With lumps, bumps or horn(s)
Black, yellow, brown, grey, white
No. of Proleg Pairs: