Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1343463

Western White
Pontia occidentalis

Observation date: September 07, 2022
Submitted by: Cascade Colors
Specimen type: Photograph
Observation notes: It seems late per the species notes, but it looks a bit more like this than the Checkered.
Status: Resident
Verified by: mikefisher
Verified date: October 15, 2022
Coordinator notes: Yes, I agree with your suggestion this is a Western rather than a Checkered...a female. From what I can see of the black markings where the opposite edge of the forewing shows, it looks very black, blacker than most Checkered's display. Mike
Checklist region(s): United States, Colorado, Larimer County