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Home » Guide » Arthropods (Arthropoda) » Insects (Insecta) » Mayflies (Ephemeroptera) » Stream Mayflies (Heptageniidae)

Family Heptageniidae - Stream Mayflies


The following data 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 Stream Mayflies
Credits: Generated with MapServer. BugGuide integration kindly provided by Mike Boone.

JanFebMarAprMayJunJulAugSepOctNovDec
Alabama  2      1  
Alberta   7        
Arizona      1     
Arkansas  2         
California     53     
Colorado  5    2    
Georgia  2   2     
Illinois   13       
Kansas      1     
Kentucky    1       
Louisiana   2        
Massachusetts 327711522   
Michigan    1       
Minnesota     1 1    
Missouri   1    3   
Montana     117    
New Hampshire  1118381    
New York   1 3   1  
North Carolina  2 1       
Ohio    1       
Oklahoma     251    
Ontario3   322 1   
Oregon   1 2      
Pennsylvania   15786 1  
Quebec     2   1  
Saskatchewan       3    
South Carolina 1          
Tennessee   3  3     
Texas  12        
Vermont  3762   2  
Washington   2  3     
West Virginia     2      
Wisconsin     3 1    

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