Acilius abbreviatus female Acilius semisulcatus female Acilius semisulcatus male Agabus mackenziensis male Agabus obliteratus female Boreonectes griseostriatus Coelambus impressopunctatus Coelambus novemlineatus hudsonicus Coelambus obscureplagiatus female Coelambus obscureplagiatus male Colymbetes dahuricus female Colymbetes dahuricus male Colymbetes dolabratus female Colymbetes dolabratus male Colymbetes exaratus female Colymbetes sculptilis female Coptotomus longulus female Dytiscus alaskanus female Dytiscus circumcinctus female Dytiscus circumcinctus male Dytiscus fasciventris female Dytiscus marginicollis female Dytiscus marginicollis male Graphoderus occidentalis female Graphoderus occidentalis male Graphoderus perplexus female Graphoderus perplexus male Hydroporus columbianus female Hydroporus columbianus male Hydroporus tademus female Hydroporus transpunctatus Ilybius pleuriticus female Neoclypeodytes ornatellus Neoscutopterus augustus female Oreodytes obesus cordillerensis Oreodytes quadrimaculatus Oreodytes scitulus scitulus Rhantus suturellus female Sanfilippodytes compertus Sanfilippodytes pacificus Sanfilippodytes pseudovilis Sanfilippodytes terminalis