Echo Azure, Western Azure (Celastrina echo)

Widespread in the west. Treated by some as 'Echo' Spring Azure (Celastrina ladon echo), or (Celastrina argiolus echo).
Western Azure, Echo Azure (Celastrina echo) Western Azure, Echo Azure (Celastrina echo)
Echo Azure (Celastrina echo)
Lambs Canyon, Salt Lake Co., UT
16 June 2005
Echo Azure (Celastrina echo)
Lambs Canyon, Salt Lake Co., UT
16 June 2005

Western Azure, Echo Azure (Celastrina echo) Western Azure, Echo Azure (Celastrina echo)
Echo Azure (Celastrina echo)
Lambs Canyon, Salt Lake Co., UT
16 June 2005
Echo Azure (Celastrina echo)
Lambs Canyon, Salt Lake Co., UT
16 June 2005

Western Azure, Echo Azure (Celastrina echo) Western Azure, Echo Azure (Celastrina echo)
Echo Azure (Celastrina echo)
Lambs Canyon, Salt Lake Co., UT
16 June 2005
Echo Azure (Celastrina echo)
Lambs Canyon, Salt Lake Co., UT
16 June 2005

All photos below show azures photographed on the same day from one location in Missoula Co., MT. I'm thinking these look like C. echo nigrescens. Thoughts?
#7929
Rock Creek, Missoula Co., MT
7 MAy 2012
With a Silvery Blue in the background
#7934
Rock Creek, Missoula Co., MT
7 MAy 2012

#7932
Rock Creek, Missoula Co., MT
7 MAy 2012
#7926
Rock Creek, Missoula Co., MT
7 MAy 2012
#7929
Rock Creek, Missoula Co., MT
7 MAy 2012
#7955
Rock Creek, Missoula Co., MT
7 MAy 2012

#7952
Rock Creek, Missoula Co., MT
7 MAy 2012

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Created on ... May 5, 2007 | jspippen@duke.edu