World catalogue of insects, Vol. 1: Hydraenidae (Coleoptera).
By Hansen, M. 1998.
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Michael Hansen. 1998. World catalogue of insects, Vol. 1: Hydraenidae (Coleoptera). Apollo Books, Vester-Skerninge, Denmark. 168 pp.
World Catalogue of Insects is an initiative aiming at compiling worldscale, authoritative catalogues of monophyletic insect taxa.
Volumes in this series will 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.g.