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Data

Family Heptageniidae - Flatheaded Mayflies


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 Flatheaded Mayflies

Hover over black occurrence boxes to see number of images submitted. Log in to make states, months and boxes clickable.
JanFebMarAprMayJunJulAugSepOctNovDec
Alabama  57212332  
Alberta   7 262    
Arizona  1 112     
Arkansas1 6   234   
British Columbia2  12186    
California 441835201429 2 
Colorado 25  2461   
Connecticut   243285   
Delaware   2        
Florida7 11 12  3 1
Georgia 169 12 21  
Idaho      1 2   
Illinois   12113171342  
Indiana 63210352    
Iowa    16231592   
Kansas  5 154 2   
Kentucky  14523     
Louisiana  351 311   
Maine 2  37251   
Manitoba      1 1   
Maryland   294554421588  
Massachusetts 329212728133   
Michigan    3573    
Minnesota    17734   
Mississippi     1      
JanFebMarAprMayJunJulAugSepOctNovDec
Missouri  13677431  
Montana 11111816  1 
Nebraska     129161  
Nevada    12      
New Brunswick    22101    
New Hampshire  1111251623   
New Jersey   17785 2  
New Mexico    31      
New York   3134315831  
North Carolina  63281018423 
North Dakota     32     
Nova Scotia     5      
Ohio    751141   
Oklahoma   217781   
Ontario3  193832171243 
Oregon   3251541532 1
Pennsylvania   1167616332633 
Quebec    271267857143  
Rhode Island       10    
Saskatchewan       3    
South Carolina 11815 12    
Tennessee  92621163420615 
Texas113745142 2 
Vermont  379861 2  
Virginia8437335345311033112
Washington   9110111231  
JanFebMarAprMayJunJulAugSepOctNovDec
West Virginia    43 4 2  
Wisconsin    123175    
Wyoming     1 1