San Diego Co., California. March 30, 2012.
This subadult lyre snake was found under a flat rock on a rocky hillside. Formerly a subspecies of Trimorphodon biscutatus, it was elevated to species status in 2008. See:
Devitt, Thomas J.; Travis J. LaDuc, and Jimmy A. McGuire 2008. The Trimorphodon biscutatus (Squamata: Colubridae) Species Complex Revisited: A Multivariate Statistical Analysis of Geographic Variation. Copeia 2008 (2): 370–387
My Flickr album California 2012 is here.
HerpMapper records for this species are here.