Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1330959

Northwestern Fritillary
Speyeria hesperis

Observation date: July 03, 2022
Submitted by: tjay13
Specimen type: Photograph
Observation notes: Well I would have though Northwestern based on images, but see from your PEEC Butterfly Guide that those would generally be a lower elevations. The habitat seems to fit perfectly with Great Spangled, and potentially Mormon. I'm struggling with separating this one - but leaning Great Spangled based on the "swollen" veins in forewing.
Status: Resident
Verified by: stevecary
Verified date: July 06, 2022
Coordinator notes: tjay, this excellent photo shows everything we need to ID it. blue eyes eliminate Great Spangled and Aphrodite. Dark, thickened veins eliminate Mormon. I suspect Northwestern is occurring at higher places in the mountain landscape than it once did. This photo, a male, proves it.
Checklist region(s): United States, New Mexico, Santa Fe County