Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1226467

Shasta Blue
Plebejus shasta

Observation date: July 28, 2019
Submitted by: A_baldini
Specimen type: Photograph
Observation notes: I observed this single Shasta Blue in the rocky alpine tundra near Crown Point, at about 11,400 feet.
Status: Resident
Verified by: mikefisher
Verified date: October 13, 2019
Coordinator notes: Correct ID, the uns is very "clear" white. Most have more gray in the ground color. You should catch a series of these for comparison to material in the CSU Gillette collection. It could be a new subspecies, somewhat isolated from the other high mountains but proximate to other lower altitude populations in North Park (which are also very grayish not so white on the uns). Mike
Checklist region(s): United States, Colorado, Larimer County