species, the adults of
are difficult to identify and are best determined by the structure of the genitalia.
The larval foodplant, blackthorn (
), is shared with the similar
and the mines are difficult to distinguish. The larvae however are different;
is greyish with black rings on the legs, whereas
is usually pale green with concolorous legs.
Distributed in the southern half of England and Wales, ranging northwards to Yorkshire, there are two generations, flying in May and again in August.