Ohio Aquatic Macros

Aquatic Insects of Ohio & Some Aq

Aquatic Macroinvertebrates of Ohio

This is a webpage for people who like to get in the stream and look for bugs.

Not all the keys are fully illustrated.
You can help by sending pictures and correcting errors. See my email below.
WHAT'S NEW? Mayfly Atlas now includes OEPA Data for all Counties

uatic Macroinvertebrates

This webpage is an ambitious attempt to provide something that I have found lacking in my quest to learn about the larval aquatic insects of Ohio, i.e., keys to the species, or genera, in one place. Granted, some of the aquatic insects are only known in the adult form, but it is useful, nevertheless, to identify them to the lowest level possible.
These webpages are dedicated to Michael Bolton, upon his retirement from Ohio EPA. He has set the standard for knowledge of the Ohio aquatic macros.
Large portions of this webpage are incomplete. I continue to add to it on a daily basis. I hope you find it useful. Please let me know of any errors.
Enjoy!
Don Dean
Email: troutman4209@gmail.com
last update: 01/19/2021 Mayfly Atlas

Key to Insect Orders

Stoneflies (Plecoptera)

Mayflies (Ephemeroptera)

Caddisflies (Trichoptera)

Dragonflies & Damselflies (Odonata)

MAYFLIES