Hemaris thetis

Hemaris thetis, the Rocky Mountain clearwing or California clearwing, is a moth of the family Sphingidae. The species was first described by Jean Baptiste Boisduval in 1855. It is found from Colorado, New Mexico, Montana, Idaho, Wyoming and Utah west to California and north to British Columbia. The habitat consists of streamsides and meadows in mountainous areas.

There is probably one generation per year with adults on wing from May to August. They feed on the nectar of various flowers, including Arctostaphylos uva-ursi and Lupinus species.

The larvae feed on Symphoricarpos species.