The flea Anomiopsyllus amphibolus is reported from southeastern Oregon, a range extension of about 475 km from the nearest reported localities in northwestern Utah.
Egoscue, Harold J.
"Woodrat nest flea Anomiopsyllus amphibolus in southeastern Oregon,"
Great Basin Naturalist: Vol. 40
, Article 6.
Available at: https://scholarsarchive.byu.edu/gbn/vol40/iss4/6