Gianius
{{Short description|Genus of annelid worms}}
{{Automatic taxobox
|image =
|image_caption =
|taxon = Gianius
|authority = Erséus, 1992
}}
Gianius is a genus of annelids belonging to the family Naididae.{{cite web |title=Gianius Erséus, 1992 |url=https://www.gbif.org/species/4307818 |website=www.gbif.org |access-date=7 April 2021 |language=en}}
The species of this genus are found in Europe and Northern America.
- Gianius anatolicus {{small|Arslan, Timm & Erséus, 2007}}
- Gianius aquaedulcis {{small|(Hrabě, 1960)}}
- Gianius cavealis {{small|Juget & Des Châtelliers, 2001}}
- Gianius cristolatus {{small|(Erséus, 1983)}}
- Gianius crypticus {{small|(Rodriguez & Giani, 1989)}}
- Gianius densespectinis {{small|(Erséus, 1987)}}
- Gianius eximius {{small|Erséus, 1997}}
- Gianius labouichensis {{small|(Rodriguez & Giani, 1989)}}
- Gianius monnioti {{small|(Erséus, 1987)}}
- Gianius navarroi {{small|Rodriguez & Achurra, 2010}}
- Gianius riparius {{small|(Giani & Martinez-Ansemil, 1981)}}