Species Account

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Summary Data

Season (Adult / Immature):

National Status: Common

Local Status: Fairly common and thinly distributed or restricted resident.

Local Record: Grade 2   See here for explanation

Flight time: One generation, Jul-Aug

Forewing: 17-20mm.

Foodplant: Grasses.

Regional breakdown:

Year first recorded18801883188318831883
Year last recorded20142014201420142008
Number of records2104821001082
Number of individuals67921401391222
Unique positions724441442
Unique locations784139462
Adult records20897590982
Immature records10010

For the county, we have a total of 2396 records from 206 sites. First recorded in 1880.


73.109 Straw Underwing 04
© Andy Nunn
73.109 Straw Underwing 03
© Damian Money
73.109 Straw Underwing 02
© Ian Marshall, 21 Jul 2009
73.109 Straw Underwing 01
© Alan Miller, 2010

Species Account

Sutton & Beaumont, 1989: Although many records are still from lowland sites, the habitat preferences of this species do not seem as restrictive as suggested previously (YNU, 1970) ["apparently confined to the lower ground from which all records come"]. There are now also many more coastal records.

2012 (CHF): This species has been gradually declining in the county for many years and there is some evidence of a contraction of range to the south-east. In many areas of the county it has become rather local. 80% of our records come from the Spurn area where it used to be common for example 45 on 28/7/95, but large counts like this have not been noted since 2000. It is very much a moth of lowland areas though there is an odd record from Malham in 2003 which seems well out of area.

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