Dark form of Agapeta zoegana

This is the dark form of Agapeta zoegana (please correct me if I'm wrong!).

I thought this moth would be very easy to identify, but it wasn't. I went through the drawings in the Micro Moths book by Sterling, Parsons & Lewington three times before I noticed it looked like Agapeta zoegana (I'd seen the normal form once before) but with the wrong background colour. There wasn't a drawing of the dark form, though it is mentioned in the separate text section. Nor does the 'Common Micro-moths of Berkshire' have a photo of the dark form.

So I thought I'd post the photo for others who, like me, were unaware of this dark form.


Paxton Ivinghoe Moths 102 by Wabi Gallery, on Flickr