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Genus Isoperla

The information below is based on images submitted and identified by contributors. Range and date information may be incomplete, overinclusive, or just plain wrong.

Contributed Images Map No Images   Images
Range map for Isoperla

Hover over black occurrence boxes to see number of images submitted. Log in to make states, months and boxes clickable.
Alberta   3        
Arkansas    1       
California3425 1    2 
Colorado  6   1     
Illinois   11       
Iowa     1      
Maine     2      
Massachusetts   156      
Michigan     11     
Montana   2        
New Brunswick     11     
New Hampshire  61323      
New York   22       
Newfoundland/Labrador      4     
Ohio    1       
Oregon   33  2    
Pennsylvania   1 1      
Tennessee    3       
Vermont  31 4      
Virginia61119435317    4 
Washington      1     
West Virginia     1      
Wisconsin    13