Figure 1. Provinces, territories, states and one federal district representing endemic areas in Canada and the USA that report the presence of stoneflies. Canada: AB (Alberta), BC (British Columbia), LB (Labrador), MB (Manitoba), NB (New Brunswick), NE (Newfoundland), NS (Nova Scotia), NT (Northwest Territories), NU (Nunavut), ON (Ontario), PE (Prince Edward Island), PQ (Quebec), SK (Saskatchewan), YK (Yukon). USA: AL (Alabama), AK (Alaska), AR (Arkansas), AZ (Arizona), CA (California), CO (Colorado), CT (Connecticut), DC (District of Columbia), DE (Delaware), FL (Florida), GA (Georgia), IA (Iowa), ID (Idaho), IL (Illinois), IN (Indiana), KS (Kansas), KY (Kentucky), LA (Louisiana), MA (Massachusetts), MD (Maryland), ME (Maine), MI (Michigan), MN (Minnesota), MO (Missouri), MS (Mississippi), MT (Montana), NC (North Carolina), ND (North Dakota), NE (Nebraska), NH (New Hampshire), NJ (New Jersey), NM (New Mexico), NV (Nevada), NY (New York), OH (Ohio), OK (Oklahoma), OR (Oregon), PA (Pennsylvania), RI (Rhode Island), SC (South Carolina), SD (South Dakota), TN (Tennessee), TX (Texas), UT (Utah), VA (Virginia), VT (Vermont), WN (Washington), WI (Wisconsin), WV (West Virginia), WY (Wyoming).

Published as part of Nelson, Charles H., 2008, Hierarchical Relationships Of North American States And Provinces: An Area Cladistic Analysis Based On The Distribution Of Stoneflies (Insecta: Plecoptera), pp. 176-204 in Illiesia 4 (18) on page 178, DOI: 10.5281/zenodo.4754815