63.081 Crambus pascuella (White-banded Grass-moth)
ws: 22-25mm; Jun-Aug; various grasses; common throughout GB
I have measured specimens with forewing lengths down to 8.5mm, which would given ws down to ~18.5mm
I have measured specimens with forewing lengths down to 8.5mm, which would given ws down to ~18.5mm
Crambus pascuella §3
ID: 6 British Crambus species have a white longitudinal streak which is cut by a fine oblique dark line around the distal quarter.
In C.silvella the median longitudinal streak extends beyond the subterminal line as a short white patch and the dark line cutting it is less oblique
C.uligonosellus is smaller (ws18-23mm) & paler; its longitudinal streak touches the costa to 1/2
C.ericella is more uniformly chocolate-brown; its longitudinal streak is separated from costa by a band of ground colour at least as broad as the streak
In both C.pratella and C.lathoniellus the median streak is narrowed towards the base and there is an additional narrow white costal streak; in both these species the hindwing is dark.
In C.silvella the median longitudinal streak extends beyond the subterminal line as a short white patch and the dark line cutting it is less oblique
C.uligonosellus is smaller (ws18-23mm) & paler; its longitudinal streak touches the costa to 1/2
C.ericella is more uniformly chocolate-brown; its longitudinal streak is separated from costa by a band of ground colour at least as broad as the streak
In both C.pratella and C.lathoniellus the median streak is narrowed towards the base and there is an additional narrow white costal streak; in both these species the hindwing is dark.
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§1 Westcliff-on-sea, Essex; 20/06/2007
§2 Thursley Common, Surrey; 16/06/2008; fw 10mm §3 Westcliff-on-sea, Essex; 24/06/2008 §4 Kinlochleven, Argyll; 09/07/2011; male; fw 11.3mm §5 New Forest, Hampshire; 02/06/2012; female §6 Westcliff-on-sea, Essex; 12/06/2015 §7 New Forest, Hampshire; 21/06/2016; male; fw 11.0mm §8 Warton Crag, Lancashire; 09/06/2018; male; fw 10.6mm §9 Bampton Grange, Cumbria; 10/06/2018; male; fw 10.5mm All images © Chris Lewis |
§10 St Marys, Isles of Scilly; 21/10/2019; female; fw 10.4mm
§11 Cliburn Moss, Cumbria; 24/06/2019; female; fw 11.0mm §12 Kishorn, Ross & Cromarty; 20/06/2022 §13 Kishorn, Ross & Cromarty; 20/06/2022 |
Page published Feb 2012 | Specimen §5 added 03/01/2013 | §6 added 30/03/2016 | §7 added 21/05/2017 | §8&9 added 13/03/2019 |
§10 added 18/12/2019 | §11 added 17/02/2020 | §12&13 added 11/12/2022
§10 added 18/12/2019 | §11 added 17/02/2020 | §12&13 added 11/12/2022
