Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1121862

Western White
Pontia occidentalis

Observation date: June 21, 2017
Submitted by: A_baldini
Specimen type: Photograph
Observation notes: Found flying in my backyard on a clear, very warm, and very windy day.
Status: Resident
Verified by: mikefisher
Verified date: July 28, 2017
Coordinator notes: Because the black on the forewings is extensive and is very black, not brownish I believe this is a Western White rather than a Checkered White. Sometimes they are hard to distinguish but usually those with much black, especially males are the Western White. This one is a female. Mike
Checklist region(s): Larimer County, United States, Colorado