Sympatric speciation in the Simuluim arcticum complex (Diptera: Simuludae)

Five separate data sets were included in our analyses: Alaska (Shields and Procunier 1982), Montana, Idaho, and eastern Washington (Shields 2013; Shields 2014; Shields and Shields 2017 and Shields, unpub. data); throughout the range of <i>S. arcticum</i> (Conflitti <i>et al</i>. 2016); western Canada (Procunier, unpub.); and throughout the range of <i>S. arcticum</i> (Adler <i>et al</i>. 2004. <br>Locations for 299 sites were determined with varying accuracy. There were 125 sites associated with recent collections using GPS capture that have an accuracy of plus or minus 5 m. There were 90 legacy sites with good location descriptions with coordinates captured with Google Earth that we are confident are within 1 km of the collection location. Finally, 84 sites had poor location descriptions often listing only a county. We used the centroid of the county location for these sites resulting in a spatial accuracy of approximately 100 km. Both the GPS coordinates and the Google Earth capture location used the datum WGS 1984. <br>Locations for each site along with associated sibling species and cytotypes were used to create an attribute table. <br>