Family: Ephemeridae

Common Burrowing Mayflies

These photos supplement pages 49-62 of the Guide to Aquatic Invertebrates of the Upper Midwest. Information on the biology of Ephemeridae can be found on page 58. There are two other families of Mayflies that have mandibular tusks, although Ephemeridae are the only tusks to project upwards. Click to compare with Potamanthidae and Polymitarcyidae.




Hexagenia head


Hexagenia lateral view