| Aulacigastridae | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia |
| Phylum: | Arthropoda |
| Class: | Insecta |
| Order: | Diptera |
| Superfamily: | Opomyzoidea |
| Family: | Aulacigastridae Duda, 1921 |
| Genera | |
|
Aulacigaster Macquart, 1835 |
|
| Synonyms | |
|
Aulacigastreridae |
|
Aulacigastridae is a very small family of flies known as sap flies. The family Stenomicridae used to be included within this family, but was moved by Papp in 1984.
The larvae of sap flies feed on the sap of deciduous and coniferous trees (sap runs) and feed on micro-organisms within the sap. Adults feed on nectar, and other fermenting substances.