Friday's Blue (Plebejus fridayi)

Recognition of this species has not yet made it to the field guides. Field identification is quite difficult as Friday's Blue is very similar to Melissa Blue and Anna's Blue. Many thanks go to Paul Opler for the determinations below! According to Paul, Friday's Blues are closely associated with sites containing their caterpillar host plant, Whitney Locoweed (Astragalus whitneyi). He also pointed out that the reflective blue-green scales almost completely fill the submarginal spots in this species.


Female, #0277 meadows at Carson Pass, CA 13 July 2007	Male, #0297 meadows at Carson Pass, CA 13 July 2007

#0279
meadows at Carson Pass, CA
13 July 2007


Female, #9994 meadows at Sonora Pass, CA 12 July 2007

According to Paul Opler, the individuals below from the Fresno Dome area could be either Friday's Blue or Anna's Blue (or both).


#9429 Female Near Fresno Dome, Madera Co., CA 10 July 2007	#9429 Female Near Fresno Dome, Madera Co., CA 10 July 2007


#9413 Female Near Fresno Dome, Madera Co., CA 10 July 2007	#9426 Female Near Fresno Dome, Madera Co., CA 10 July 2007


#9509 Female Near Fresno Dome, Madera Co., CA 10 July 2007	#9522 Female Near Fresno Dome, Madera Co., CA 10 July 2007


#9418 Male Near Fresno Dome, Madera Co., CA 10 July 2007	#9425 Male Near Fresno Dome, Madera Co., CA 10 July 2007


#9507 Male Near Fresno Dome, Madera Co., CA 10 July 2007

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Created on ... July 24, 2007 | Updated on ... Sep 23, 2007 | jeffpippen9@gmail.com