Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1241933

Acmon Blue
Plebejus acmon

Observation date: October 06, 2019
Submitted by: stevecary
Specimen type: Photograph
Observation notes: only one seen on this cool, breezy day; unsure how to differentiate acmon and lupini here . . . ; could not get ventral shot
Status: Resident
Verified by: Ken Davenport
Verified date: February 02, 2020
Coordinator notes: Based on the date, this would be acmon, members of the Lupine Blue complex fly in that area and up above timberline June-early to late August...some may represent subspecies alpicola which many be a species level taxa. Friday's Blue (Plebejus fridayi) also occurs near there earlier in the season.
Checklist region(s): United States, California, Mono County