Size: 0.75 - 1.0 inches wingspan
Key ID features: Male bright blue above, female dark gray or gray-brown, with coppery-green iridescence when fresh. HW with white fringe and marginal band of black spots with gray borders. Below, gray or bluish-gray, with black spots rimmed with white, variable marginal band of spots and chevrons, orange patches next to small white-tipped tails. Usually shows black cell-end bar on FW above and below.
Similar species: Western Tailed-Blue tends to be whiter below and usually lacks black cell end bar on the FW above.
Host plant: Many species in the pea family including lupines, vetches and clovers.
Habitat: Often in weedy, disturbed habitats, but also in native wet meadows and riparian areas.
Range: West of the Cascade Range, Wallowa Mtns and NE Blue Mtns.
Season: Early April to early August
Conservation Status: Secure