Anytime is a good time to look for Buckeye Stoneflies
Stoneflies are indictors of the highest quality streams in Ohio and they are a favorite food for trout. Every fly fisher should be able to recognize them.
There are 9 families of Stoneflies in Ohio, 30 genera and at least 104 species, with possibly another 17 not yet identified (DeWalt, et al., 2012). They are reported in every county. They can be found in every month of the year.
The most widespread stone fly in Ohio is Allocapnia vivipara found in 66 counties, Perlesta lagoi in 59 counties and Acroneuria frisoni in 49. The most prolific county is Hocking with 50 species, followed by Ashland (48) and Geauga. (43). The most prolific stream or river is the East Branch of the Chagrin in Stebbins Gulch of Holden Arboretum (Geauga Co.), with 28 species; followed by a tributary of Queer Cr. at Ash Cave (Hocking Co.) with 23 species (DeWalt, et al., 2012).
You may identify your specimen by comparing it to one of the pictures below, or if you have a microscope, it is preferable to use the Keys to Families (above) to identify your specimen. By following the links in the Keys, you can go to Keys of Genera, and for some, Keys to Species
To find where you might find a particular species refer to the Atlas. This lists the county where the adult species has been reported and when it was found.
You might also find out when you might be able to find stoneflies by referring to the Calendar. This lists the adult species, where and when it was reported (data from DeWalt, et al, 2012). Nymphs should be found about a month or two earlier (depending on species).
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This webpage is created and maintained by Don Dean, Professor Emeritus of Biochemistry and Entomology, The Ohio State University. Please contact me with comments, questions about "Stoneflies of Ohio" or to report new findings. troutman4209@gmail.com
How to cite this work: Dean, D.H. and R.E DeWalt. 2021. Stoneflies of Ohio: The Definitive Site for Ohio Stoneflies [date last used]. http://ohiostoneflies.org
The Keys are only partially completed. Figures are still needed for some nymphs and all the adults
ACKNOWLEDGEMENTS
Ed. DeWalt of the Illinois Natural History Survey, provided the database upon which this webpage is built. His encouragement and collaboration in this work is acknowledged and greatly appreciated.
LINKS TO OTHER STONEFLY WEBPAGES
Updated: 07/31/2022
