Birkiglyrnuætt
Birkiglyrnuætt (fræðiheiti: Hemerobiidae) er flugutegund af netvængjubálki. Bæði lirfur og fullvaxnar flugur eru rándýr. Fjórar tegundir finnast hérlendis (t.d. birkiglyrna), þar af þrjár nýkomnar.

Ættkvíslir
Undirættir eru:

 Subfamily Adelphohemerobiinae
 Genus Adelphohemerobius Oswald, 1993
 Subfamily Drepanacrinae
 Genus Austromegalomus
 Genus Conchopterella
 Genus Drepanacra
 Subfamily Carobiinae
 Genus Carobius
 Subfamily Drepanepteryginae
 Genus Drepanepteryx Leach, 1815
 Genus Gayomyia
 Genus Neuronema 
 Subfamily Hemerobiinae
 Genus Biramus
 Genus Hemerobiella
 Genus Hemerobius Linnaeus, 1758
 Genus Nesobiella
 Genus Wesmaelius Krüger, 1922
 Subfamily Megalominae
 Genus Megalomus  Rambur, 1842 
 Subfamily Microminae
 Genus Megalomina Banks, 1909
 Genus Micromus Rambur, 1842
 Genus Nusalala Navás, 1913
 Subfamily Notiobiellinae
 Genus Anapsectra
 Genus Notiobiella
 Genus Psectra Hagen, 1866
 Genus Zachobiella
Subfamily Psychobiellinae
 Genus Psychobiella
 Subfamily Sympherobiinae
 Genus Neosympherobius
 Genus Nesobiella
 Genus Sympherobius Banks, 1904

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