008 Idaea seriata (Small Dusty Wave)

70.008 Idaea seriata (Small Dusty Wave)

fw: 9-11mm; bivoltine in south Jun-Jul, Aug-Sep, univoltine in north Jul-Aug; withered leaves and plant debris; common in England and lowland Wales and Scotland

Idaea seriata (Small Dusty Wave) §1

ID: Characterised by central dark dot on each wing; dusting of grey scales which is very variable in strength; relatively indistinct cross-lines though a diffuse central (2nd) line can usually be discerned and the 3rd line is usually present as a row of neural dots; termenal neural dots are usually present but variable in strength and the termenal margin usually also shows a fine dashed line (§9 below has unusually strong cross-lines). Similar to some pugs (Eupithecia spp) but these lack the grey dusting, usually lack the central hindwing spot and they have cross-lines which are distinctly angled near the forewing costa.

Variation
Dissection
Male genitalia
Female genitalia

§1 Westcliff-on-sea, Essex; 05/05/2007
§2 Westcliff-on-sea, Essex; 05/07/2007
§3 Westcliff-on-sea, Essex; 31/05/2008; fw 9.0mm
§4 Westcliff-on-sea, Essex; 24/05/2009
§5 Foulness, Essex; 04/09/2011; male
§6 Westcliff-on-sea, Essex; 05/09/2012; male
§7 Westcliff-on-sea, Essex; 05/09/2012; male
§8 Westcliff-on-sea, Essex; 05/09/2012; male
§9 Folkestone Warren, Kent; 04/07/2013; male; fw 9.1mm
All images © Chris Lewis

§10 Westcliff-on-sea, Essex; 19/09/2014; female; fw 9.5mm
§11 Somerton, Somerset; 18/06/2015; to light
§12 Foulness, Essex; 11/06/2016; male; fw 8.9mm
§13 Westcliff-on-sea, Essex; 02/05/2020; male; fw 9.0mm