Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1270292

Sleepy Duskywing
Erynnis brizo

Observation date: May 20, 2020
Submitted by: DeepSkyKelly
Specimen type: Photograph
Observation notes: Black forewing patterns and lack of white spots point toward Dreamy or Sleepy Duskywing.
Status: Resident
Verified by: stevecary
Verified date: August 31, 2020
Coordinator notes: Your diagnostic thinking is correct. the next step to distinguish sleepy from dreamy is to check the forewing between the two rows of gray scales. Dreamy has a lot of silvery scales in that space, while Sleepy does not. this individual has a moderate amount of silvering there, so not an ideal example. what made the difference for me was the habitat, which I believe has more oaks (Sleepy host plant) than aspens (Dreamy host plant).
Checklist region(s): United States, New Mexico, Colfax County