[Butterflies of the Columbia River Gorge of Oregon and Washington]

An unidentified blue (unknown species) with gray hairstreak (Strymon melinus) on puccoon (Lithospermum ruderale), seen at left along the East Bank Trail, Lower Deschutes River...........April 24, 2005. The photo at right shows a gray hairstreak resting on an unopened lupine raceme on grassy slopes adjacent to Washington Highway SR 14 at milepost 115.5................April 18, 2010.

A gray hairstreak on big sagebrush (Artemisia tridentata) as seen at left along the old railroad embankment along the lower Deschutes River, about one mile above its mouth..........April 24, 2005. The photo at right shows a gray hairstreak resting on a Carey's balsamroot leaf as seen at the Mill Creek Ridge Preserve, Columbia Land Trust lands southwest of The Dalles, OR.......April 22, 2018.

The photo at left shows the ventral surface of the wings of a gray hairstreak with its forefeet in the Deschutes River near its mouth.........September 1, 2007. The photo at right shows a gray hairstreak nectaring on puccoon (Lithospermum ruderale) as seen along trails above the Crawford Oaks trailhead at Columbia Hills Historical State Park......May 5, 2018.