Eubranchipus oregonus Creaser, 1930

New records. OREGON: Benton Co.: Corvallis, Shallow pool at 1633 Brooklane Dr. 15 March 2007 collector unknown, Det. D.C. Rogers. Lynn Co.: McLogan Pond, Calapooia River flood plain at Tangent Drive, 1 February 2007, collector unknown, Det. D.C. Rogers, DCR-756. Wasco Co.: The Dalles, vernal pool on Columbia River basalt flow formation, 45˚ 36’ 52.88”N, 121˚ 11’ 57.56’W, 35m elevation, 7 April 2009, S. Wille, det. D. C. Rogers. WASHINGTON: Jefferson County: No data, March 2001, det. D.C. Rogers, DCR-361.

Comments. This species is common on the west side of the Cascade Mountains from British Columbia and Vancouver Island (Canada), south to northwest California (USA), with relict populations in Oklahoma (USA)(Eng et al. 1990).