They are almost impossible to see without magnifying them. Only the larvae bite people, and once you feel the itch, they are long gone, so it's difficult unless you know they are there. I can tell you firsthand, they exist in South Jersey.
To find them, walk through waist-high scrub in June/July, and then that evening, stick clear packing tape to your waist and ankles and scan it with a microscope.
To find them, walk through waist-high scrub in June/July, and then that evening, stick clear packing tape to your waist and ankles and scan it with a microscope.