Elm Tortrix Acleris kochiella

Formerly given the vernacular name Elm Button.

Although it's not a particularly common species, it took me longer than might be expected to find this species. Some individuals can be quite hard to tell from some Pale Birch Tortrix Acleris logiana - indeed if all the photos posted online are identified correctly then I'm not convinced all are separable externally (but I suspect that at least in some cases they are not labelled correctly). If in doubt there are differences in the genitalia.

When I looked at this one I was pretty confident it was kochiella from its external appearance but made quite sure by checking the genitalia.

female Elm Tortrix Acleris kochiella, near Cranwich (Norfolk, UK), 21st March 2025