Aagaardia, Genus
Abiskomyia, Genus
Ablabesmyia, Subgenus (Ablabesmyia)
Ablabesmyia, Genus
Acamptocladius, Genus
Acricotopus, Genus
Allopsectrocladius, Subgenus (Psectrocladius)
Amblycladius, Subgenus (Chaetocladius)
Anatopynia, Genus
Anatopyniini, Tribus
Animalia, Regnum
Apsectrotanypus, Genus
Arctopelopia, Genus
Arthropoda, Phylum
Axarus, Genus