Speyeria cybele
Male Great Spangled Fritillary butterflies are tan to orange with black scales on forewing veins, females are tawny and darker than males.
This is a female Great Spangled Fritillary, a butterfly species that can be abundant in the Wasatch Mountains at this time of the year.
Last year I saw an abundance of Great Spangled Fritillary butterflies in the Wasatch Mountains, it seemed that I could easily spot them flitting about or nectaring on thistles but this year I noticed that these and the numbers of other species of butterflies are way down in numbers
I'm confident in my North American bird ID abilities but when it comes to Fritillary butterfly species ID in the Wasatch Mountains I feel stymied a lot of the time.
Last week while I was up in a canyon in the Wasatch Mountains I spotted a female Great Spangled Fritillary butterfly nectaring on a Musk Thistle so I felt I had to take photos of she sipped the nectar of the flower.