 "U. republicensis" was one of three sawfly species described in Archibald & Rasnitsyn's 2015 paper, the other two being "Ypresiosirex orthosemos" and "Cuspilongus cachecreekensis", both from the McAbee fossil beds in south central British Columbia.The single described wing of "U. republicensis" is incomplete, missing the very basal and apical sections.Additionally the area of the wing between the Radial and Costal veins is either damaged or folded, obscuring vein details.