The Tailed Copper (Lycaena arota) sounds and looks like a cross between a hairstreak and copper butterfly.
The picture shows the contrasting orange(top) and gray (bottom) wings with an orangish zig-zag mark on the bottom wing near the tail. Females usually have a more prounced orange color on the top wing.
They are a common species in the West, with the exception of the northern most and desert areas.
