Danby’s Winter Moth Operophtera
danbyi is a native North American species, of quite striking appearance
and not likely to be confused with either O. brumata or O. bruceata.
Apart from the wing pattern, the shape of the forewing is distinctive, with
a dead straight costa and a relatively sharp apex, not gently rounded as in
the other species. Also, the upperside of the thorax has marks on it reminiscent
of the marks on the thorax of the famous Death’s Head Hawk Moth of Europe.