Geometridae: Sterrhinae

1708 (ABH70.011) Single-dotted Wave Idaea dimidiata, (Hufnagel, 1767)

KR08161

Great Staughton
Great Staughton
 Photo © Peter Bissell
Great Staughton
 Photo © Peter Bissell
 pre-1981
 1981-1999
 2000-2009
 2010-onwards
Earith
Earith
 Photo © David Griffiths
Monks Wood
Monks Wood
 Photo © Nick Greatorex-Davies
Hemingford Grey, 22nd July 2013
Hemingford Grey, 22nd July 2013
 Photo © Nick Greatorex-Davies
Monks Wood
Monks Wood
 Photo © Nick Greatorex-Davies


General Information

The outer part of the rounded, straw-white forewing darkens towards the trailing corner and this is diagnostic. On some individuals, the darkening is evident as a dark brown band, but even lighter specimens have at least two small dark marks. The dots around the border of both the forewing and hindwing are sometimes absent.

 

Pupates in plant debris.

Overwinters as Overwinters as a larva.
Both sexes readily come to light, sometimes in numbers.

Forewing length: 9-11mm.
Foodplant(s): Cow Parsley (Anthriscus sylvetris), Burnet-saxifrage (Pimpinella saxifraga), Hedge Bedstraw (Galium mollugo)
Flying: One generation, June-August
UK Presence: Resident
National status: Common

Habitat

Woodland, hedgerows, gardens, marshes and fens.

Regional Information

Recorded in 130 (48.1%) of the 270 2km squares of Huntingdonshire.

Last recorded in September 2018

Recorded date range (Adult): 28 May to 14 October

Similar Species
Earith
Earith
 Photo © David Griffiths
Small Fan-footed Wave Idaea biselata
Earith
Earith
 Photo © David Griffiths
Treble Brown Spot Idaea trigeminata


Larva/Leafmine:
Larva Type:
Smooth
Colours:
Brown, white
No. of Proleg Pairs:
2