Species Account

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Summary Data

Season (Adult / Immature):

National Status: Common

Local Status: Rare and local resident, under-recorded as majority undetermined

Local Record: Grade G   See here for explanation

Flight time: One generation, Jul-Aug

Forewing: 11-16mm.

Foodplant: Grasses.

Regional breakdown:

Year first recorded19841990197819872009
Year last recorded20142013201420142014
Number of records5512181612
Number of individuals6518152424
Unique positions910121610
Unique locations910121610
Adult records5512181512
Immature records00010

For the county, we have a total of 113 records from 57 sites. First recorded in 1978.


73.170 Lesser Common Rustic 03 (gen. det.)
© Charles Fletcher, 8 Aug 2012
73.170 Lesser Common Rustic 02 (gen. det)
© Charles Fletcher, 8 Aug 2012
73.170 Lesser Common Rustic 01
© Alan Draper

Species Account

Sutton & Beaumont, 1989: Recognised as British in February 1984, some specimens were soon found in Yorkshire by H. E. Beaumont in July of the same year (Harrison & Sterling, 1986). Although there are as yet few confirmed records it is thought likely that this species is sympatric with its congener over most, if not all of its range. Some authorities are still not convinced by the separation and refuse to distinguish the two. The name of this species has just been revised from secalella (Remm) to didyma (Esper) (Lempke, 1988).

Beaumont, 2002:
VC61. South Cave, July 1992 gen. det. HEB (DBC); Rudston, presence confirmed by gen. det. (ASE).
VC62. Hutton Rudby, 23.6.1990 conf HEB (GWF). NEW VICE-COUNTY RECORD.
VC63. Rossington, presence confirmed (RIH); Wintersett Country Park, four 21.7-3.8.1998 gen. det. HEB (PSm, PM et. al.).
VC64. Malham Tarn, regularly during August 1991-1998 (DB).

Argus 58, 2009:
VC65. Keld, 24.7.2009 (CHF, JCW, DB et al.). NEW VICE-COUNTY RECORD.

2012 (CHF): See the comments under Common Rustic. We now have confirmed records of both species from all five vice-counties.

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