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Key to the Nearctic species of Euphranta (Rhacochlaena)

Wing with radial-medial band (band covering crossvein R-M) interrupted in cell r₂₊₃, its anterior part equidistant from its posterior part and subapical band (band covering DM-Cu). Apical band not connected to radial-medial band along costa, not extended into cell r₁. Radial-medial and subapical bands broadly connected posteriorly, no hyaline space between them in cell cu₁. Scutum mostly dark brown or bluish gray. Central Mexico. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .  mexicana Norrbom

Wing with radial-medial band uninterrupted and anteriorly well separated from subapical band. Apical band narrowly connected to radial-medial band along costa in cell r₁. Radial-medial and subapical bands usually separated by hyaline space in cell cu₁. Scutum orange brown. Canada, northern and western U.S.A. south to mountains of California and northern New Mexico. . . . . canadensis (Loew)