73.212 Ipimorpha retusa (Double Kidney)
fw:13-15mm (Waring & Townsend), ws: 26-32mm (MBGBI10); Jul-Sep; sallows/willows (Salix spp), black poplar (Populus nigra); local in damp woodland, fens and marshes in England and Wales.
Formerly placed in Amphipyrinae.
Formerly placed in Amphipyrinae.
Ipimorpha retusa (Double Kidney) §1
ID: Ground colour usually dark olive, but ranges from brownish-fuscous to reddish-brown; oval mark elongate resembling a kidney mark, forewing termen emarginate, apex strongly falcate. The antemedian and postmedian lines are fairly straight and parallel. I.subtusa (Olive) averages larger (fw 14-16mm), has a paler olive ground colour, a fairly straight termen and a minimally falcate apex. The postmedian line is slightly convex towards the termen and is closer to the antemedian line at the dorsum than at the costa; it also shows a distinct claviform stigma (lacking in I.retusa).
§1 Strumpshaw Fen, Norfolk; 23/07/2008; fw 13.7mm
§2 Strumpshaw Fen, Norfolk; 24/07/2009; male; fw 13.3mm
§3 Strumpshaw Fen, Norfolk; 26/07/2012; male
§4 Strumpshaw Fen, Norfolk; 25/07/2014
§5 Orlestone Forest, Kent; 26/07/2018; male; fw 11.8mm
All images © Chris Lewis
§2 Strumpshaw Fen, Norfolk; 24/07/2009; male; fw 13.3mm
§3 Strumpshaw Fen, Norfolk; 26/07/2012; male
§4 Strumpshaw Fen, Norfolk; 25/07/2014
§5 Orlestone Forest, Kent; 26/07/2018; male; fw 11.8mm
All images © Chris Lewis
Page published 09/06/2016 (§1-4) | §5 added 28/05/2019
