A sample of 21 Gordionus violaceus (Baird) (Nematomorpha: Gordioidea) was obtained from a puddle in Winona County, southeastern Minnesota. These are the first of this species reported from the upper Midwest. Sex ratio was not significantly different from 50:50 and females and males did not differ significantly in length, but females were of significantly greater diameter than males.
Cochran, Philip A.; Zanon, Jacob D.; and Hanelt, Ben
"The Horsehair Worm Gordionus Violaceus (Nematomorpha: Gordiida) in Minnesota,"
The Great Lakes Entomologist: Vol. 46
, Article 13.
Available at: https://scholar.valpo.edu/tgle/vol46/iss1/13