Pygarctia murina, the mouse-colored euchaetias, is a moth in the family Erebidae. It was described by Richard Harper Stretch in 1885. It is found in the United States in south-western Utah, from southern Colorado to south-eastern California and in southern Texas.
The wingspan is 26–33 mm. Adults are on wing from late July to September.[1]
Larvae feed on Euphorbia species and have also been reared on Funastrum species. They reach a length of about 22 mm when fully grown. Pupation takes place in a silken cocoon within surface debris.[2]