identification of a lepidoptera species

[Garrytrust]

I have  a moth on butterfly collected early June  on a Rosy Pussytoes(
Antennaria rosea) flower growing in the floodplain of the North Fork of the
Flathead River, Montana. The speciman is rose and white wings and blends in
perfectly on the flower. Its body length measures 8mm long. I thing it is a
moth based on the structure of the antennae. Can anyone identify this speciman?
Thank you!