Family Veliidae Amyot and Serville 1843 (riffle bug)
Parent taxon: Gerromorpha according to J. Damgaard 2012
Sister taxa: Engynabis, Gerridae, Hebridae, Hydrometridae, Mesoveliidae
Subtaxa: Haloveliinae, Microveliinae, Palaeovelia, Stenovelia, Velia, Veliinae
Ecology: