Genus is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus.
Paracalliope is a genus of amphipod crustaceans that live in Australasia. They include the most common freshwater amphipods in New Zealand, where they are particularly frequent in slow-flowing reaches of rivers. They shelter among weed beds and are important prey items for fish such as the New Zealand smelt, Retropinna retropinna, which are in turn important prey for the freshwater eels Anguilla australis and Anguilla dieffenbachii. Paracalliope acts as an intermediate host for the nematode Hedruris spinigera, which can thus reach their primary host, the eel.
The Interim Register of Marine and Nonmarine Genera (IRMNG) is a taxonomic database which attempts to cover published genus names for all domains of life, from 1758 in zoology up to the present, arranged in a single, internally consistent taxonomic hierarchy, for the benefit of Biodiversity Informatics initiatives plus general users of biodiversity (taxonomic) information. In addition to containing just over 500,000 published genus name instances as at May 2023, the database holds over 1.7 million species names, although this component of the data is not maintained in as current or complete state as the genus-level holdings. IRMNG can be queried online for access to the latest version of the dataset and is also made available as periodic snapshots or data dumps for import/upload into other systems as desired. The database was commenced in 2006 at the then CSIRO Division of Marine and Atmospheric Research in Australia and, since 2016, has been hosted at the Flanders Marine Institute (VLIZ) in Belgium.
Trichodectes is a genus of louse belonging to the family Trichodectidae.
Acrotrichis is a genus of beetles belonging to the family Ptiliidae.
Naineris is a genus of polychaete annelids belonging to the family Orbiniidae. It was first described by Henri Marie Ducrotay de Blainville in 1828. The type species is Nais quadricuspida Fabricius, 1780, currently accepted as Naineris quadricuspida. The genus has cosmopolitan distribution.
Neopachylus is a genus of harvestmen belonging to the family Gonyleptidae.
Epirodrilus is a genus of annelids belonging to the family Naididae. Its class is Clitellata.
Anomalocardia is a genus of bivalves belonging to the family Veneridae.
Hedruridae is a family of nematodes belonging to the order Rhabditida.
Ostertagia is a genus of nematodes belonging to the family Trichostrongylidae.
Aspiculuris is a genus of nematodes belonging to the family Oxyuridae.
Polyplax is a genus of lice belonging to the family Polyplacidae.
Trinodes emarginatus, is a species of skin beetle found in India and Sri Lanka.
Cyrtosomum is a genus of nematodes belonging to the family Atractidae.
Hexametra is a genus of nematodes belonging to the family Ascarididae.
Skrjabinodon is a genus of nematodes belonging to the family Pharyngodonidae.
Cystidicoloides is a genus of nematodes belonging to the family Cystidicolidae.
Heligmosomoides is a genus of nematodes belonging to the family Heligmosomidae.
Oxyuris is a genus of nematodes belonging to the family Oxyuridae.
