65.016 Achyla flavicornis (Yellow Horned)
ws: 17-20mm; Feb-Apr; silver/downy birch (Betula pendula/pubescens); common - ssp galbanus in England & Wales, ssp scotica in Scotland
Achyla flavicornis (Yellow Horned) §3 male
ID: Orange antennae (hence flavicornis and "Yellow Horned"); forewing gery with variable greenish-white or white frosting most apparent at the central portion of the costa; variable dark antemedian and postmedian lines, the former usually double and the latter often but often less obviously so; these lines may or may not converge dorsally (in the female?); a variably prominent pale oval mark is placed subcostally between the two (sets of) lines. Ssp scotica is larger and a darker grey.
Dissection
Male genitalia
Female genitalia
§1 Hockley Woods, Essex; 24/03/2015; male; fw 19.0mm
§1 Hockley Woods, Essex; 24/03/2015; female; fw 17.8mm
§1 Hockley Woods, Essex; 24/03/2015; male; fw 17.3mm
§1 Hockley Woods, Essex; 24/03/2015; male; fw 17.5mm
§1 Hockley Woods, Essex; 24/03/2015
§1 Hockley Woods, Essex; 24/03/2015
§1 Hockley Woods, Essex; 24/03/2015
§1 Hockley Woods, Essex; 24/03/2015
§1 Hockley Woods, Essex; 24/03/2015
§1 Hockley Woods, Essex; 24/03/2015
All images © Chris Lewis
§1 Hockley Woods, Essex; 24/03/2015; female; fw 17.8mm
§1 Hockley Woods, Essex; 24/03/2015; male; fw 17.3mm
§1 Hockley Woods, Essex; 24/03/2015; male; fw 17.5mm
§1 Hockley Woods, Essex; 24/03/2015
§1 Hockley Woods, Essex; 24/03/2015
§1 Hockley Woods, Essex; 24/03/2015
§1 Hockley Woods, Essex; 24/03/2015
§1 Hockley Woods, Essex; 24/03/2015
§1 Hockley Woods, Essex; 24/03/2015
All images © Chris Lewis
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