Name root – Lampornis, lampas meaning “lamp” and ornis meaning “bird”; clemenciae after the wife of Rene Lesson (Clemence Lesson).
Distribution – Breeds in northern portions of the Sierra Madre Occidental from southeastern Arizona, southwestern New Mexico, northern Mexico and western Texas, south and east through Chihuahua, Coahuila and Durango, south to Oaxaca and possibly Chiapas. Typically not found in winter north of southern Sonora and Chihuahua.
Texas – Summer resident and breeding in the Chisos Mountains of Big Bend National Park; rare in Davis Mountains where breeding has not been documented; rare to accidental in the Guadalupe Mountains where the species reportedly bred once. In the mountains, spring birds typically arrive in early April and leave in October. Several documented records outside of the Trans-Pecos region where accidental. First Texas record; 1 June 1901, in Pine Canyon of the Chisos Mountains, Brewster County, by H. C. Oberholser.
Habitat – Pine-oak forests.