Idana marginata (Say) was previously known from northeastern North America: Canada and the United States, west to northeastern Illinois and south to North Carolina. Herein, collection events are reported from Richland County in southwestern Wisconsin. This new state record significantly increases the known geographical distribution of the species to the west. The specimens were recovered from an unbaited Lindgren funnel trap during two intervals between 26 June and 28 July 2019.
Young, Daniel K.
"New Record of Idana marginata (Say) (Diptera: Tephritoidea: Ulidiidae) from Wisconsin,"
The Great Lakes Entomologist, vol 54
Available at: https://scholar.valpo.edu/tgle/vol54/iss1/11