Giant Mayfly

Mayfly in the family Ephemeridae. Lives near water. Its aquatic larva feeds on fine particles gathered from the bottom and fine particles filtered from the current.

There are 42 observations of Giant Mayfly in Québec, mostly in Laurentides, Montréal and Chaudière-Appalaches, and it has been reported in 10 of the 17 regions. They peak in July and become rare from September to May.