- Adult – 1" 3/8 long (wingspan 2" 15/16). They are grey–brown and slender. Their legs are super–thin and long.
- Larvae – 9/16"–2" 15/16. They are worm–like and grey, brown or cream–coloured.
- Eggs are laid over the water of a pond or lake, or on the vegetation near the lake shore and hatch after about six weeks.
- The larvae live in the water or in moist soil for up to five years depending on the species.
- In the spring the larvae pupate and then emerge as adults.
- As adults they neither feed, bite nor sting.
- The larvae, called leatherjackets, consume roots (such as garden lawns) and other vegetation.