Grey or Dark Dagger

(Acronicta psi)
(Acronicta tridens)

The Grey Dagger and the Dark Dagger moths are distinguishable from each other only by microscopic examination of the genitalia.
Not having the inclination or expertise to do that, it has to be accepted that these could be either a Grey or a Dark Dagger.
The first of these pictures is a combination of three different images and the second is a combination of four images.