Moved from Conophorus.

I now have a copy of Priddy (1958) , and this indeed goes to C. fenestratus in his key. It also agrees well with his description thereof. There are only two nearctic species of Conophorus with patterned wings (see quote here), C. fenestratus and C. collini, and the latter has a medial longitudinal "groove" (sulcus) with yellowish tomentum...which is lacking here.

The specimen here has lighter, narrower wing markings than those of other current BugGuide posts, but Priddy mentions that markings are sometimes lighter. Compare with type images here. (Note the type image shows a male which has fine serrations along the costa of the wing. These are lacking in females like mine here.)