70.270 Ectropis crepuscularia (Engrailed) 1947, 1948
fw: 15-22mm; bivoltine or trivoltine in south Mar-May, Jun-Aug, Sep-Oct, univoltine in north Apr-Jun; various trees and shrubs; common in broadleaved woodland in England, Wales and lowland Scotland.
British literature has recognised Small Engrailed as a separate species with the binomial E.crepuscularia and BF number 1948, with Engrailed as E.bistortata. In Europe Small Engrailed is not recognised as a distinct species and the 'two' cannot be distinguished by wing markings or genitalia. The new British checklist retains Small Engrailed as a separate species, albeit without a binomial (Ectropis sp.) and gives it number 70.271. I propose to only recognise the one species.
British literature has recognised Small Engrailed as a separate species with the binomial E.crepuscularia and BF number 1948, with Engrailed as E.bistortata. In Europe Small Engrailed is not recognised as a distinct species and the 'two' cannot be distinguished by wing markings or genitalia. The new British checklist retains Small Engrailed as a separate species, albeit without a binomial (Ectropis sp.) and gives it number 70.271. I propose to only recognise the one species.
Ectropis crepuscularia (Engrailed) §2
ID: A pair of darts distal to the postmedian line distinguish this from similar species.
Dissection
Male genitalia
§1 Foulness, Essex; 24/06/2007
§2 Foulness, Essex; 13/03/2011
§3 Hatfield Heath, Hertfordshire; 22/03/2012
§4 Strumpshaw Fen, Norfolk; 28/07/2012
§5 Compton Bishop, Somerset; 27/08/2014; male; fw 16.4mm
§6 Foulness, Essex; 01/08/2015; male; fw 17.7mm; to light
§7 Braemar, Aberdeenshire; 09/05/2016; male; fw 20.3mm
All images © Chris Lewis
§2 Foulness, Essex; 13/03/2011
§3 Hatfield Heath, Hertfordshire; 22/03/2012
§4 Strumpshaw Fen, Norfolk; 28/07/2012
§5 Compton Bishop, Somerset; 27/08/2014; male; fw 16.4mm
§6 Foulness, Essex; 01/08/2015; male; fw 17.7mm; to light
§7 Braemar, Aberdeenshire; 09/05/2016; male; fw 20.3mm
All images © Chris Lewis
Page published 06/03/2014 (§1-4) | §5 added 27/11/2014 | §6 added 27/08/2015 | §7 added 26/06/2017
