A aedeagus in ventral view B, C, D, G, H, K, L median lobe of aedeagus B, G, K, L in ventral view, C, D, H, O–Q in lateral view E, F, I, J, M, N underside of paramere showing peg setae A–F Paraquedius marginicollis sp. nov. E atypical specimen from Clallam County, Washington, United States G–J Paraquedius puncticeps (Horn) I lectotype, from Vancouver, British Columbia, Canada J non-type specimen from Vancouver Island K–Q Quediellus debilis (Horn), specimens from east (K, M) and west (L, M) sides of the continental divide. Filled circles = typical ‘nanulus’ morphotype; open circles = typical ‘debilis’ morphotype. Scale bars: 0.1 mm.