Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1275397

Chryxus Arctic
Oeneis chryxus

Observation date: July 05, 2020
Submitted by: Aner
Specimen type: Photograph
Observation notes: None.
Status: Resident
Verified by: mikefisher
Verified date: November 19, 2020
Coordinator notes: Your suggested ID is correct....this is the "on-year" for the Chryxus Arctic, flying biennially only in even years (very rarely otherwise....the high altitude populations (likely a sibling species - Oeneis calais) are found annually (mostly over 10,000 ft. which is about the top limit for chryxus). Mike
Checklist region(s): United States, Colorado, Custer County