Celastrina echo cinerea
(W.H. Edwards, 1883)
Southwestern Azure
Celastrina echo cinerea, the Southwestern Azure, is a of the echo azure in the Lycaenidae. It is one of several subspecies within the Celastrina echo , which is found across western North America. The is known generally as the echo azure or western azure. plant associations include Aesculus californica (California buckeye) in the Bay Area region.



Pronunciation
How to pronounce Celastrina echo cinerea: /sɛˈlæstrɪnə ˈɛkoʊ ˌsɪˈnɪriə/
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Distribution
Western North America; associated with the broader range of Celastrina echo, which occurs from western Canada through the western United States.
Host Associations
- Aesculus californica - plantCalifornia buckeye; specifically noted as a Bay Area plant for the Echo Spring Azure
More Details
Taxonomic Status
GBIF lists Celastrina echo cinerea as a synonym of Celastrina argiolus, indicating taxonomic uncertainty or reclassification in some treatments. The is recognized in iNaturalist with the preferred Southwestern Azure.
Conservation Context
The broader Celastrina echo , like many western butterflies, has been subject to conservation concern due to loss and declining . Conservation efforts for this and related include planting native plants and preserving natural habitats.