Observation date: July 13, 2019
Submitted by: LightScavenger
Specimen type: Photograph
Observation notes: This butterfly and a tiger swallowtail seemed to be competing on both pale yellow thistle blossoms and western wallflower. This was the only time I've ever seen this butterfly.
Status: Resident
Verified by: stevecary
Verified date: July 27, 2020
Coordinator notes: there are a small handful of similar-looking black swallowtail species and I can't be 100% sure, but this is the most likely. it's a female.