Redefined-family
Guides
Aulacigastridae
Sap Flies
Aulacigastridae is a small family of true flies (Diptera) commonly known as sap flies. The family was redefined in 1984 when Stenomicridae was separated from it. Members are found globally across all ecoregions. Both larvae and adults have specialized feeding habits associated with tree sap and fermenting substances.