Brood XIII (17-year)
Note: Red areas indicate well established records. Green areas indicate less well established records. All boundaries are approximate. For more detailed maps, consult Simon (1988) or Marlatt (1907).
Note - after surveying the SW Michigan counties, and consulting with Dick Alexander, I have changed the map to reflect that it is unlikely that Brood XIII occurs in Michigan. - Mark O'Brien, June 6, 2007.