Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1429719

Sylvan Hairstreak
Satyrium sylvinus

Observation date: July 28, 2026
Submitted by: Julie Arington
Specimen type: Photograph
Observation notes: Feeding on carrot blooms. Added to iNaturalist and it was also identified there.
Status: Resident
Verified by: mikefisher
Verified date: August 01, 2026
Coordinator notes: Your suggested ID is correct...a female. The BAMONA species list does not include dryope as a species...genetics does suggest dryope and sylvinus are separate species-level taxa though for reasons related to confusion the list will probably not be updated anytime in the near future. Based on the genetics sylvinus or what I have called the Western Willow Hairstreak (and would probably also apply to dryope) is primarily confined to the West Coast states. Thanks for you submission. Mike
Checklist region(s): United States, Colorado, Routt County