Where do they live? Deer flies are plentiful in damp, wooded or wetland environments such as marshes, ponds and streams, and their activity peaks in June and July throughout much of their area of distribution.

What states do deer flies live?

Deer Flies In North America

However, according to the study, the species of deer fly now occur in Connecticut, Rhode Island, Vermont, and Virginia. The parasites were also found throughout the entire state of Pennsylvania. The species L. mazamae is increasing its range further into the north and east.

What attracts deer flies to your yard?

Like mosquitoes, deer flies are attracted to carbon dioxide from breathing, warmth, motion and darker colors.