For terms see Morphology of Diptera.
Pediciidae are medium-sized to large (5 millimetres (0.20 in), Dicranota 35 millimetres (1.4 in), Pedicia) flies which resemble Tipulidae. The wings, legs and abdomen are long and slender. Ocelli are absent. The eyes are pubescent; short erect hairs are present in between the eye facets (the eyes are usually glabrous in related families). The antenna have 12-17 segments. The thorax has a V-shaped transverse suture. The wing has 2 anal veins. The apical crossveins and M-Cu form an oblique line. The wings of Pedicia have contrasting brown longitudinal stripes.