This species is found in stagnant water along streams, about lakes, and in dredged ditches. It is doubtless much more frequent than our map indicates. I did not know the species until recent years and I suspect that many collectors are not acquainted with it. It is usually found associated with duckweeds. This species was first reported from Indiana by Prince Maximilian in 1839. It has been reported so far from Starke and St. Joseph Counties.