Surprising find on Park Point! First briefly seen roughly 1.25 miles to the southeast nearer the end of Minnesota Point, then relocated in a grassy area between buildings at the airport (photographed from the other side of the fence as the airport is private property). Few records of this vagrant in Minnesota, and most/all of these are from the southern half of the state; perhaps came north as a result of the record-high early October temperatures and southerly winds.
By location this is an intergrade between bairdii and dodi.
The host plant is Linear-leaved Wormwood -- Artemisia dracunculus.
This swallowtail was raised from a larva found feeding on Artemisia dracunculus. Well known population among enthusiasts.
'Not real sure on this ID...hopefully others will weigh in. General setting/location shown in last photo. Many butterflies working on a great flush of wallflower this year.
This was the site where the sighting was made and many adults were captured in the sticky traps placed.
https://content.govdelivery.com/accounts/ORODA/bulletins/320275c
Two individuals found on a pillar by the shoreline. I collected one of the specimens