Hygrotus sensu Stephens 1828
Authors/Creators
Description
Genus Hygrotus Stephens, 1828
Type species: Dytiscus inaequalis Fabricius, 1777: 239, by subsequent designation of Curtis (1835: pl. 531).
The genus Hygrotus as here defined includes 129 described species (two of them bitypic) distributed in the Nearctic (including the north of MeXico), Palaearctic, Afrotropical and Oriental zoogeographical regions (Fig. 2 and Table 1). One Nearctic species was introduced to Hawaii (see below), which belongs to the Pacific region.
Diagnosis. In the new classification Hygrotus is the second of two genera of the tribe Hygrotini. As in Clemnius n. gen. all species of the genus have two carinae in each antennal cavity (see Figs 4–6).
According to the two main clades in the phylogeny of Hygrotini and several morphological characters, the genus (which corresponds to Clade B in Fig. 1) is subdivided into four clades corresponding to the following four subgenera: clade B1 = subgenus Coelambus, clade B2 = subgenus Hyphoporus, clade B3 = subgenus Hygrotus s. str. and clade B4 = Leptolambus n. subgen.
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Scientific name authorship
- sensu Stephens
- Kingdom
- Animalia
- Phylum
- Arthropoda
- Order
- Coleoptera
- Family
- Dytiscidae
- Genus
- Hygrotus
- Taxon rank
- genus
- Taxonomic concept label
- Hygrotus Stephens, 1828 sec. Fery, 2017
References
- Stephens, J. F. (1828 - 1829) Illustrations of British entomology. Mandibulata. Vol. 2. Baldwin & Cradock, London, 200 pp. [pp. 1 - 112 in 1828, pp. 113 - 200 in 1829]
- Fabricius, J. C. (1777) Genera Insectorum eorumque characteres naturales secundum numerum, figuram, situm et proportionem omnium partium oris adiecta mantissa speciorum nuper detectarum. M. F. Bartschii, Chilonii, xvi + 310 pp.
- Curtis, J. (1835) British entomology; being illustrations and descriptions of the genera of insects found in Great Britain and Ireland. Vol. 12. J. Curtis, London, pls. 530 - 577.