Entomological sampling effort for the detection of <i>Culicoides sonorensis</i> from 2002 to 2011 in Alberta (AB, Canada) and Montana (MT, US).

*One site (positive) was sampled once. In table are reported the name of the sampled area (Location), the source of information (data from T. Lysyk or G.D. Johnson), the year of collection (Year), the number of sites in each area (Nr. of sites), duration (weekly, sampling for a week; nightly, sampling for one night only), trapping effort (number of trap nights: number of traps * number of nights), and the number of sites in which C. sonorensis was recorded (positive).