Cindy: fungus gnats I believe are in all states. Thay look like small gnats that really don't fly around or if they do it's really short distances, they kind of jump around. They like moist placed to lay their eggs since moisture breeds algae and fungus which is what the fungus gnat larvae feed on and if there happens to be roots around they will feed on them as well. I don't think it's really noticeable on mature plants just seedlings since they really like young tender roots. I have dug up a seedling that looked like it was having problems and it would have no roots whatsoever. The adults are said not to eat although some species will feed on nectar so they cause no damage other than laying their eggs. I have a ton in my outside beds because I use a lot of stuff they like such as manure, milorganite, alfalfa pellets.
taken from this website
http://www.hort.uconn.edu/ipm/...
In laboratory studies, adult fungus gnats carried spores of Pythium, Botrytis, Verticillium, Fusarium and Thielaviopsis as they moved from plant to plant. Spores have also been found in their droppings.
Pythium is one of the things that causes rot in daylilies.
