World Catalogue of Insects, Vol. 2: Hydrophiloidea (Coleoptera). By Hansen, M.
Hansen, M. 1999. World Catalogue of Insects, Vol. 2: Hydrophiloidea (Coleoptera). Apollo Books, Vester-Skerninge, Denmark. 416 pp.
World Catalogue of Insects is an initiative aimed at compiling worldscale, authoritative catalogues of monophyletic insect taxa.
Volumes will as a minimum contain standard nomenclatoral information on all names pertaining to the taxon treated, including type locality and distribution to the extent this is relevant.
Additional information is optional, e.