Species Account

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Summary Data

Season (Adult / Immature):

National Status: Common

Local Status: Common and widespread resident.

Local Record: Grade 2   See here for explanation

Flight time: Jun-Sep.

Forewing: 8-9mm.

Foodplant: Mosses.

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 recorded193519931935
Year last recorded201020102010
Number of records5011531308
Number of individuals14614293780
Unique positions25330566
Unique locations18417402
Adult records4961491290
Immature records000

For the region, we have a total of 1308 records from 402 sites. Earliest record on file is in 1935.


1344 Eudonia mercurella 01
© Tom Morris

Species Account

For further information refer UK Moths.

Davey, P., 2009: A widespread species in England, Wales and southern Scotland, the larva feeding on mosses (Musci spp.) and lichens (Lichenes spp.) growing on tree trunks, rocks and walls. In Dorset, the moth is widespread and locally common, with no discernible ecological preference. The form portlandica, where the basal area on the forewing is whitish, occurs infrequently along the Dorset coast.

The national norm is for a single brood in June and July, but in Dorset, the moth is also on the wing in August and into early September. Given the lack of sufficient nutrient in mosses and even less in lichens to sustain two summer generations, the moth is probably single brooded, comprising a small emergence initially followed by the main emergence.

This species is similar to Dipleurina lacustrata1338. Diagnostics include: the absence of a pale-grey region across the central portion of the forewing.


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