73.361 Xestia triangulum (Double Square-spot)
fw: 17-19mm (Waring & Townsend), ws: 36-46mm (MBGBI9); Jun-Aug; various herbaceous and woody plants; common throughout GB.
Synonym: Amathes ditrapezium (Pierce, 1942)
Synonym: Amathes ditrapezium (Pierce, 1942)
Xestia triangulum (Double Square-spot) §4 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.
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§1 Horsey, Norfolk; 13/07/2008; male; fw 19.0mm
§2 Cyffdy Farm, Gwynedd; 22/06/2010; female; fw 18.8mm §3 Cyffdy Farm, Gwynedd; 24/06/2010; male §4 Mull; 25/06/2011; male; fw 18.6mm §5 Strumpshaw Fen, Norfolk; 04/07/2013; male; fw 18.5mm §6 Silverdale, Lancashire; 19/06/2014 (ID not confirmed) §7 Winterton, Norfolk; 09/07/2015; male; fw 17.9mm §8 Snettisham, Norfolk; 05/07/2013; female; fw 17.2mm §9 Foulness, Essex; 24/06/2017; male; fw 18.0mm; to light §10 ??; ??/??/2021; male; fw 18.1mm All images © Chris Lewis |
Larva
Westcliff-on-sea, Essex; 16/05/2019 |
Page published 17/03/2017 (§1-8) | §9 added 22/10/2017 | Larva added 07/01/2020 | §10 added 17/02/2022
