A population of the Racket-tailed Emerald, Dorocordulia libera, was found at Singer Lake, a collection of numerous bogs in southern Summit County, Ohio. This species was previously known in Ohio from two speci mens collected 22 June 1924 from a bog in Geauga County. Between 8 June and 23 July 1999, 14 male and 3 female specimens were collected at Singer Lake. Notes on this species behavior and flight season in Ohio are presented.
Chapman, Eric G.
"First Record of Dorocordulia Libera (Odonata: Corduliidae) in Ohio in 75 Years,"
The Great Lakes Entomologist, vol 32
Available at: https://scholar.valpo.edu/tgle/vol32/iss3/1