Observation notes: host plants included lupine. it is a small light blue butterfly that flits quickly, so is difficult to photograph. It was dry and hot (85 degrees). in the Sierra Nevada foothills, east of Nevada City. I saw several over a couple of days. I took a video on my phone that is very large, so I saved it to this link. https://www.icloud.com/photos/#0hlT8icA1n8wLfaQmb5g6g_oA. I also uploaded screen shots.