Species Account

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Summary Data

Season (Adult / Immature):

National Status: Common

Local Status: Uncommon and thinly distributed resident. Under-recorded?

Local Record: Grade 1   See here for explanation

Flight time: One generation, Oct-Jan, peak late Oct-early Nov.

Forewing: 15-21mm.

Foodplant: Broadleaved trees, Oak, Birch, Elm etc.

IMPORTANT - Please note that the maps and accounts are provisional, subject to change and further update.  The whole dataset still needs to go through the final verification process and it is likely that a very small number of records will not satisfy the present requirements and there are other records that have not been formally submitted.  The information is for guidance only.

Record breakdown:

Year first recorded195519831955
Year last recorded201120112011
Number of records646791450
Number of individuals624621512922
Unique positions764160
Unique locations624132
Adult records633791424
Immature records102

For the region, we have a total of 1450 records from 132 sites. Earliest record on file is in 1955.


1631 December Moth 10
© Julian Francis
1631 December Moth 09
© Gillian Nash, November 2017
1631 December Moth 09 male and female
© Gillian Nash
1631 December Moth 07
© Will Bown
1631 December Moth 06
© Paul Harris
1631 December Moth 05
© Paul Harris
1631 December Moth 04
© Les Hill
1631 December Moth 03
© Paul Harris
1631 December Moth 02
© Mike Hetherington, 12 Nov 2012
1631 December Moth 01
© Tom Morris

Species Account

For further information refer UK Moths.

Davey, P., 2009: A widespread species in the British Isles, the larva feeding on a large range of deciduous trees and shrubs.

In Dorset, the moth is abundant in deciduous woodland containing birch (Betula spp.), elm (Ulmus spp.), hawthorn (Crataegus spp.) or blackthorn (Prunus spinosa), and common amongst coastal blackthorn thickets, but less frequent elsewhere.

The moth is readily attracted to light and has been observed by the author, flying at a lighted window in sub-zero temperatures and snow falling.

See background to species accounts.  Index of Vernacular names - Search - Random Species