Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1122751

Persius Duskywing
Erynnis persius

Observation date: June 27, 2017
Submitted by: Christian.Nunes
Specimen type: Photograph
Observation notes: Flying low along the side of a dirt road at ~7000 ft elevation in a conifer forest. Feeding at yellow buckwheat flowers. Several duskywings out and about, a few Pacuvius and the rest were Afranius/Persius. I would like to hear any comments a reviewer may have on the ID of this one. I'm leaning female Afranius but only for subjective reasons. Perfectly happy leaving it unidentified.
Status: Resident
Verified by: mikefisher
Verified date: July 22, 2017
Coordinator notes: Chris, I believe this is a female E. persius because the spots on the hindwings are clearly developed, are more extensive on the hindwings than they are except in the case of an occasional afranius female from the second flight on the high prairie along the Front Range. In addition, the altitude and area where you photographed it is sufficiently high enough for persius and this is the dominate small Erynnid in the mountains in early summer. I have a specimen that is virtually identical to it I took on Lookout Mt. (Jefferson Co.) at about the same altitude, June 11, 1968, also at about 7000 ft. That is my opinion, based on specimens of both species at hand. Mike
Checklist region(s): Boulder County, United States, Colorado