Possibly the second record west of the Continental Divide, the first being http://n2t.net/ark:/65665/39d93e4e8-a728-44d6-b31e-86529dc0e56e

Habitat temporary pool with much vegetation.
Image 1 - male head showing fan-shaped antennae with three pointed tips.
Image 2 - male, ventral view.
Image 3 - male right antenna, lateral view.
Image 4 - knob at base of distal segment of right male antenna. Although Hartland-Rowe in his 1967 description of the species describes this knob as round, it's actually more-or-less pear shaped.
Image 5 - frontal view of male head.
Image 6 - habitat.