Collected and mounted by a fellow student at the 2011 Field Entomology class at San Francisco State University's Sierra Nevada Field Campus. I believe it was taken while nectaring on flowers of pussypaws (Calyptridium monospermum).

The bright yellow legs and yellow-pubescent, metallic blue-green body remind me of Eulonchus sapphirinus...but the proboscis is much too short. However, it occurs to me that a portion of it may have been inadvertently broken off during capture, transportation, or pinning.