Species Account

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Distribution

Summary Data

Season (Adult / Immature):

National Status: Local

Local Status: Scarce and restricted resident.

Local Record: Grade 2 See here for explanation

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

Forewing: 12-14mm.

Foodplant: Downy Birch, Silver Birch.

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:

	VC9	VC11	Region
Year first recorded	1935	1983	1935
Year last recorded	2011	2011	2011
Number of records	857	125	1964
Number of individuals	1591	231	3644
Unique positions	154	15	338
Unique locations	106	14	240
Adult records	830	123	1906
Immature records	0	0	0

For the region, we have a total of 1964 records from 240 sites. Earliest record on file is in 1935.

Photos

Species Account

For further information refer UK Moths.

Davey, P., 2009: A widespread species in Britain, the larva feeding on birch (Betula spp.). In Dorset, the moth is common local amongst birch on sandy soil; typical localities include Arne Wood, Hurn and Holt Heath. It also occurs in woodland on chalky soil in the north-east of the county where birch is frequent, but here it is at a lower density. The dearth of records from west Dorset may be due to smaller numbers of birch trees in this region. The peak of the second brood is, on average, twice as large as that of the first brood.

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