''Stygarctus'' is a

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

tardigrade Tardigrades (), known colloquially as water bears or moss piglets, are a phylum of eight-legged segmented micro-animals. They were first described by the German zoologist Johann August Ephraim Goeze in 1773, who called them Kleiner Wasserbär ...

s in the family

Stygarctidae The Stygarctidae are a family of tardigrades. The family was first described by Schulz in 1951. The genus '' Neoarctus'' was first placed in the family Stygarctidae, but it was moved to a separate family, Neoarctidae ''Neoarctus primigenius'' ...

. It was named by Erich Schulz in 1951. The name is a combination of Greek ''

Styx In Greek mythology, Styx (; grc, Στύξ ) is a river that forms the boundary between Earth (Gaia) and the Underworld. The rivers Acheron, Cocytus, Lethe, Phlegethon, and Styx all converge at the centre of the underworld on a great marsh, whic ...

'' and ''arktos'' ("bear").

Species

The genus includes the following species: * '' Stygarctus abornatus'' McKirdy, Schmidt & McGinty-Bayly, 1976 * '' Stygarctus ayatori'' Fujimoto, 2014 * '' Stygarctus bradypus'' Schulz, 1951 * '' Stygarctus gourbaultae'' Renaud-Mornant, 1981 * '' Stygarctus granulatus'' Pollock, 1970 * '' Stygarctus lambertii'' Grimaldi de Zio, D’Addabbo Gallo, Morone De Lucia & Daddabbo, 1987 * '' Stygarctus spinifer'' Hiruta, 1985 * ''

Stygarctus keralensis ''Stygarctus keralensis'' is a species of marine tardigrade. It is described from the intertidal area of Vadakara beach, Kerala it can be easily differentiated from closely related species ''S. gourbaultae''. This species was described by groups ...

'' Vishnudattan, Bijoy Nandan, Hansen & Jayachandran, 2021

Species

References

Further reading