70.234 Ennomos alniaria (Canary-shouldered Thorn)
fw: 16-20mm; Jul-Oct; downy/silver
birch (Betula pubescens/pendula), elms (Ulmus spp), limes (Tilia spp); common throughout GB
Ennomos alniaria (Canary-shouldered Thorn) §3 female
ID: canary-yellow thorax; distal cross-line
steeply angled compared with E.quercinaria (August Thorn) and E.erosaria
(September Thorn) so that it meets the costa more distally (at 3/4 - 4/5 compared
with 2/3); distal cross-line meets costa in a smooth arc (kinked near costa in
E.quercinaria); central crescent mark usually present between the cross-lines
(usually absent or very faint in E.erosaria); orange-yellow ground colour of
wings and a variable amount of darker speckling evenly distributed across
forewing (band distal to distal cross-line clearly darker in E.fuscantaria
(Dusky Thorn).
§1 Rett, Norfolk; 21/08/2011; male
§2 Foulness, Essex; 04/09/2011; male
§3 New Forest, Hampshire; 02/09/2013; female
§4 Westcliff-on-sea, Essex; 22/07/2021; male; fw 17.9mm
§5 Glen Urquart, Inverness-shire; 23/09/2021; female
§6 Cliburn Moss, Cumbria, 02/09/2022; male
§7 Haugh Woods, Herefordshire; 07/09/2023; female; fw 20.8mm
All images © Chris Lewis
§2 Foulness, Essex; 04/09/2011; male
§3 New Forest, Hampshire; 02/09/2013; female
§4 Westcliff-on-sea, Essex; 22/07/2021; male; fw 17.9mm
§5 Glen Urquart, Inverness-shire; 23/09/2021; female
§6 Cliburn Moss, Cumbria, 02/09/2022; male
§7 Haugh Woods, Herefordshire; 07/09/2023; female; fw 20.8mm
All images © Chris Lewis
Page published 04/03/2014 (§1-3) | §4 added 07/11/2021 | §5 added 30/12/2021 | §6 added 01/12/2022 | §7 added 29/12/2023
