After Parker, 1982 and Caterino, 2002 ["The Tree of Life"]
<==o Hydrophiloidea [Histeroidea] (vedensuosijamaiset kovakuoriaiset, tylppömäiset) |--o Hydrophilidae (vedensuosijat) | |-- Helophorinae [Helophoridae] | |-- Epimetopinae | |-- Georissinae [Georyssidae] | |-- Hydrochinae [Hydrochidae] | |-- Spercheinae [Spercheidae] | |-- Horelophinae | |-- Hydrophilinae | `-- Sphaeridiinae [Sphaeridiidae] |-- Synteliidae `--+-- Sphaeritidae `-- Histeridae [incl. Niponiidae] (tylpöt)
Reference(s):
- Lahti, S., Malmström, K. K., Koli, L., Leikola, A., Syrjämäki, J. & Lahti, J., 1980: Zoo, Suuri Eläinkirja 6: Selkärangattomat.
–Werner Söderström Osakeyhtiö, Porvoo-Helsinki-Juva, 1980.
Original work [in French]: Beaut‚ Du Monde Animal XI & XII Invertébrés.
–Rizzoli Editore, Milano, 1968 - Caterino, M. S., 2002: Hydrophilidae.
–iNet: The Tree of Life: http://tolweb.org/tree?group=Hydrophilidae&contgroup=Hydrophiloidea&dynnodeid=8064 - Parker, S. P. (ed.), 1982: Synopsis and classification of living organisms. Vols. 1 & 2
–McGrew-Hill Book Company