Family: Potamanthidae

Hacklegill Mayflies

These photos supplement pages 49-62 of the Guide to Aquatic Invertebrates of the Upper Midwest. Information on the biology of Potamanthidae can be found on page 61. There are two other families of Mayflies that have mandibular tusks. Click to compare with Ephemeridae and Polymitarcyidae.




Potamanthidae tusks


Potamanthidae gills