Excerpt: A fairly extensive collection of Epl~emeroptera representing 35 genera, 1 12 determined species and subspecies is preserved in alcohol in the Entomology Museum at Michigan State University, East Lansing, Michigan 48823. Although most of the specimens were collected in Michigan, the collection also contains representatives of many of the common species found in New England and neighboring Canada. A small portion of the collection is not Northeast in origin.
This list is designed to aid those interested in the fauna of the Northeast and Great Lakes regions, especially if they need specimens for study. I have included the states or provinces in which specimens were collected, as well as the numbers of individuals; more complete collecting data may be obtained from the author or the museum. Many new state records occur in the collection, and some of these records extend the known range significantly.
Koss, Richard W.
"A List of the Mayflies (Ephemeroptera) in the Michigan State University Entomology Museum,"
The Great Lakes Entomologist, vol 3
Available at: https://scholar.valpo.edu/tgle/vol3/iss4/1