Taxonomy of Guatemalan water beetles in the genus Hydrochus (Coleoptera: Hydrochidae)
Perkins Philip D.
Acta Entomologica Musei Nationalis Pragae 60(1): 291-301, 2020
Published online: 23rd April 2020
Published in print: 15th June 2020
Abstract: The taxonomy of Guatemalan water beetles in the genus Hydrochus Leach, 1817
(Coleoptera: Hydrophiloidea: Hydrochidae) is presented. The known fauna now
consists of six species, four of which are described as new species. The new
species are diagnosed, and high-resolution images of the habitus and male
genitalia of each species are given. The following new species are described: H.
directus sp. nov., H. pertuberculatus sp. nov., H. sinuatus sp. nov., and H.
steineri sp. nov. The historical types of H. debilis Sharp, 1882 and H.
obscurus Sharp, 1882 are redescribed, their lectotypes are designated, and
high-resolution images of the habitus, male genitalia and labels of the
lectotypes are given.
Key words: Coleoptera, Hydrophiloidea, Hydrochidae, Hydrochus, new species, lectotype designation, Guatemala, Central America, Neotropical Region