The Silvery Blue is on the wing from May into mid June and has prominent rows of black spots circled in white on each wing. It can potentially be confused for the Boisduval’s Blue, but the Silvery’s spots tend to be “neater” than those on the Boisduval’s and they tend to lack additional spots toward the inside of the wings (close to the body). In the west, the Silvery Blue ranges from central Alaska to southern California. In the east, it can be found from Nova Scotia to Georgia.
Size: Forewing length 13 mm—16 mm
Photo by: Glenn Marangelo on 5/22/22 near Missoula, MT