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Family Caenidae - Small Squaregilled 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 Small Squaregilled Mayflies

Hover over black occurrence boxes to see number of images submitted. Log in to make states, months and boxes clickable.
JanFebMarAprMayJunJulAugSepOctNovDec
Alaska     1      
Arizona   2   3    
Arkansas  4         
British Columbia    2  12   
California  51 7  1   
Colorado    15      
Connecticut      1     
Delaware    4       
Florida33 1 3   112
Illinois    21 4    
Indiana      2     
Iowa      12    
Kansas    2       
Kentucky    3       
Louisiana    1       
Maine       111  
Manitoba     1      
Maryland    4 12    
Massachusetts   111 6    
Michigan     1      
Minnesota    11 32   
Missouri    12      
Montana       1    
Nebraska      2     
Nevada2           
JanFebMarAprMayJunJulAugSepOctNovDec
New Brunswick     1      
New Hampshire 2   11     
New Jersey     4      
New York    1221    
North Carolina   1 1  2   
Ohio      1     
Oklahoma         3  
Ontario     11115  
Oregon     4      
Pennsylvania    6 11    
Quebec    4913 1  
Rhode Island     3 4    
Tennessee   2  4 1   
Texas  2  1  2   
Washington      3     
Wisconsin    1 1 1