The Limoniidae are a family of flies closely related to the crane flies, Tipulidae, although they can usually be distinguished by the way the wings are held at rest. Limoniids usually hold/fold the wings along the back of the body, whereas tipulids usually hold them out at right angles. Members of the genus Chionea (snow flies) have no wings at all. Limoniids are also usually smaller than tipulids, with some exceptions. Limoniidae are a very large family with nearly 10500 described species in 133 genera. These flies are found in damp places throughout the world, and many species form dense swarms in suitable habitats.
Limoniids are not particularly common in amber deposits, but a few finds (e.g. Tipunia intermedia Krzeminski & Ansorge, 1995 from the Upper Jurassic Solnhofen limestones) suggest the family has been extant since the Jurassic period.