Species Account

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Summary Data

Season (Adult / Immature):

National Status: Nb

Local Status: Uncommon and restricted resident.

Local Record: Grade 3   See here for explanation

Flight time: Two generations, May-Jun, Jul-Aug.

Forewing: 11-14mm.

Foodplant: Field Maple.

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 recorded1891200720051891
Year last recorded2011200720112011
Number of records14323296
Number of individuals22853472
Unique positions7911162
Unique locations6412134
Adult records13423278
Immature records2004

For the region, we have a total of 296 records from 134 sites. Earliest record on file is in 1891.


1676 Mocha 06
© Colin Burningham
1676 Mocha 05
© Will Bown
1676 Mocha 04
© Phyl England
1676 Mocha 03
© Paul Harris
1676 Mocha 02
© Tom Morris
1676 Mocha 01
© Terry Box

Species Account

For further information refer UK Moths.

Davey, P., 2009: A local species confined to southern Britain, the larva feeding on field maple (Acer campestre). In Dorset, the moth has a scattered distribution and is always local. Field maple, however, is a frequent understory tree in old woods and hedges and is most common on soils with relatively high calcium content. A handful of localities evidently support flourishing colonies, and these tend to be situations where field maple is dominant. The following individual is likely to have been an immigrant from abroad transported on a warm south-easterly airflow from northern France: Portland, on 22 August 2001 (M Cade).

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