Species Account

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Distribution

Summary Data

Season (Adult / Immature):

National Status: Local

Local Status: Scarce and local resident.

Local Record: Grade G See here for explanation

Flight time:

Forewing:

Foodplant:

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	1970	1983	1970
Year last recorded	2011	2010	2011
Number of records	292	30	644
Number of individuals	560	87	1294
Unique positions	58	7	130
Unique locations	50	6	112
Adult records	284	30	628
Immature records	3	0	6

For the region, we have a total of 644 records from 112 sites. Earliest record on file is in 1970.

Photos

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Species Account

For further information refer UK Moths.

Davey, P., 2009: A local species in England and Wales, the larva feeding on birch (Betula spp.), sallow (Salix spp.), larch (Larix spp.), beech (Fagus spp.), and various other deciduous tree and shrub species. In Dorset, the moth is local and tends to be confined to deciduous woodland containing birch and sallow in the eastern half of the county. Debate surrounds the possibility that this species is merely a form of the Engrailed¹⁹⁴⁷, indeed Ectropis crepuscularia is not recognised as a distinct species on the Continent. Structurally there is no difference between the two, but externally, the ground colour is usually much whiter in this species.

Hill, L., 2014: Ectropis crepuscularia ([D. & S.]) is now considered a valid European species; E. bistortata (Goeze) is relegated to a specific synonym of E. crepuscularia ([D. & S.]) (Agassiz et al, 2013). The species that we call E. crepuscularia appears to be endemic to Britain. Agassiz (2003) informs us, however, that the name crepuscularia was first assigned to a moth caught in Vienna and so that must, of course apply to the European species. Thus, our E. bistortata (Goeze) is really E. crepuscularia ([D. & S.]) and our crepuscularia is in need of a valid new name! (Plant, 2008)

Reference
Agassiz, D.J.L. 2003. The names of Engrailed moths (Geometridae). Entomologist’s Rec. J. Var. 115: 223.

Agassiz, D.J.L., Bevan, S.D. & Heckford, R.J. 2013. Checklist of the Lepidoptera of the British Isles.

Plant, C.W. 2008. The Moths of Hertfordshire. The history, status, distribution and phenology of the micro-
and macro-lepidoptera of a south-eastern English county. Hertfordshire Natural History Society. 373.

Last updated: 10 January 2014

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