Unless noted otherwise, photographs on this website are the property of the photographers and may not be reused without written permission from the photographers. I would like to return to the start of this key. ![]() Oops! If this doesn't appear to be the order for your insect, go back through the key and look more carefully at your insect while answering the questions again. hemimetabolous metamorphosis (egg - naiad - adult)įor a list of all of the orders in this key, click here: List of Orders.įishflies and mayflies are not flies.wings are held vertically when the insect is at rest.large eyes that typically cover most of the head.two long threadlike cerci, usually with a third, similarly long and thin caudal filament between them.the front pair of wings is much larger than the hind pair (some species lack hind wings altogether). ![]() two pairs of net-veined, somewhat triangular-shaped wings.Ephemeroptera, therefore, means a winged insect with a short life, which is a reference to the fact that the typical adult mayfly lives only a day or so. ![]() Photo credit: Photo by Eric Cummings, USGS, UMESC, 2007.Ĭlick here to see examples of more mayflies!īased on your answers to the questions, you have identified your insect as being in the order Ephemeroptera!Įphemeroptera comes from the Greek ephemera, which means ephemeral or short-lived, and ptera, which means wings. This photo shows a typical scene around the water during a massive mayfly hatch. Mayflies often hatch in large numbers, creating huge swarms.
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