Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1423546

Western White
Pontia occidentalis

Observation date: May 25, 2026
Submitted by: Cascade Colors
Specimen type: Photograph
Observation notes: None.
Status: Resident
Verified by: mikefisher
Verified date: May 31, 2026
Coordinator notes: Based on the completeness of the apical black markings on the forewing I call this the Western White...a female...the black on the Checkered is not quite as complete toward the end of the markings (but they are sometimes!). Mike
Checklist region(s): United States, Colorado, Grand County