June 19, 2021 — Marathon County
Marathon County, WI; (SW portion of Marathon County);(in SW 1/4 of section 17 in McMillan Township). McMillan Marsh State Wildlife Area; (0.3 miles NNW from Marsh Road public parking area). Little Eau Pleine River (I recorded images from east side of river while walking along river bank on a wildlife runway).
Confirmed as male Horned Clubtail (Arigomphus cornutus) through Dan Jackson ("Midwest Odonata" FB page).