73.360 Xestia ditrapezium (Triple-spotted Clay)
fw: 17-19mm (Waring & Townsend), fw 39-46mm (MBGBI9); Jun-Aug; various herbaceous and woody plants; local in England, Wales and W.Scotland
Synonym: Amathes ditrapezium (Pierce, 1942)
Synonym: Amathes ditrapezium (Pierce, 1942)
Xestia ditrapezium (Triple-spotted Clay) §2 male
ID: See X.ditrapezium vs X.triangulum.
At this stage of my understanding, when assigning identity to one of these two species darker purplish specimens should be A.ditrapezium and paler ochreous specimens should be X.triangulum. Genital differences are diagnostic.
At this stage of my understanding, when assigning identity to one of these two species darker purplish specimens should be A.ditrapezium and paler ochreous specimens should be X.triangulum. Genital differences are diagnostic.
Dissection
Male genitalia
Female genitalia
§1 Mull; 27/06/2011 (ID not confirmed)
§2 Ardnamurchan; 07/07/2012; male; fw 18.0mm
§3 Silverdale, Lancashire; 19/06/2014 (ID not confirmed)
§4 Conwy mountain, Caernarvonshire; 21/07/2015 (ID not confirmed)
§5 Bampton Grange, Cumbria; 06/07/2017; male; fw 16.8mm
§6 Bampton Grange, Cumbria; 01/08/2017; female; fw 15.8mm
§7 Mull; 21/06/2018
All images © Chris Lewis
§2 Ardnamurchan; 07/07/2012; male; fw 18.0mm
§3 Silverdale, Lancashire; 19/06/2014 (ID not confirmed)
§4 Conwy mountain, Caernarvonshire; 21/07/2015 (ID not confirmed)
§5 Bampton Grange, Cumbria; 06/07/2017; male; fw 16.8mm
§6 Bampton Grange, Cumbria; 01/08/2017; female; fw 15.8mm
§7 Mull; 21/06/2018
All images © Chris Lewis
Page published 17/03/2017 (§1-4) | §7 added 22/04/2019
