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Engrailed
Ectropis crepuscularia (Goeze, 1781)
Geometridae: Ennominae
1947 / 70.270
Photo © Andy Nunn,  Raywell VC 61

Brindled White-spot
Parectropis similaria
Forewing: 15-22mm
Flight: March - May and June - August
Foodplant:   Mainly broadleaved trees and shrubs
Red List: Least Concern (LC)
GB Status: Common
Verification Grade:  Adult: 1

Yorkshire Status: Fairly common and fairly widespread resident.

Sutton & Beaumont, 1989: Recorded from all five vice-counties and both imagines and larvae are said to be frequent. However, this species and E. crepuscularia (Denis & Schiffermuller) are very difficult to separate, even by dissection so the date of capture is often a crucial item of information. In the period when both species are flying almost all records are suspect and the Rothamsted Insect Survey records them as one species for the purpose of their survey because of these difficulties.

Beaumont, 2002: This taxon and the next have long caused problems and in the past records have been assigned to one or the other largely on the basis of the flight period, a means of distinction that is becoming more and more unreliable given that the flight period of many species has shown considerable change during the past decade. On the continent (from where both were named) they are considered conspecific, the name crepuscularia having priority. If our two taxa are shown to be distinct the Small Engrailed will require a new name. (see Agassiz, 2000).

2012 (CHF): The situation is still confused with Engrailed and Small Engrailed. Wing markings are identical and there is no difference in genitalia but the official British position is that they are two separate species. Continental authors still seem to disagree! Widespread across the county and often common in broadleaved woodland.

Recorded in 156 (78%) of 200 10k Squares.
First Recorded in 1883.
Last Recorded in 2023.

Latest 5 Records
Date#VC10k Area
06/10/2023161TA04 - Beverley (N)
01/10/2023261TA07 - Hunmanby
26/09/2023161SE94 - Middleton-on-the-Wolds
25/09/2023161SE94 - Middleton-on-the-Wolds
21/09/2023161TA02 - Hessle
Further info: Ectropis crepuscularia
 
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