Elaphrus (Elaphrus) californicus von Mannerheim 1843  

Found commonly on wet silt near the water on both sides of the Channel and along the river. Although cryptic in color and behavior these beetles are made active (and visible) by splashing water over the silt. They are active in the daytime, fully winged, and probably fly quite well, although they mostly run to escape capture. They are attracted to white lights (Larochelle, 1973). Several examples were collected on the Island and adjacent shores between 1905 and the present (HSB, PJS, GFH, TLE, & DRW). No teneral specimens seen. Adults were collected in April, May, and July. Larochelle (1974b) found these beetles hibernating on "mounds' and two inches deep in mounds in November and December in Quebec. Total length, 6.3 to 8.0 mm (7.2).

Synonyms: Elaphrus californicus, von Mannerheim, 1843; Elaphrus similis, LeConte, 1848; Elaphrus hesperius, Casey, 1920