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, in 1998.
Subfamilies and genera
They are divided into the following subfamilies and genera:- Megastygarctidinae Bello & de Zio Grimaldi, 1998:
- *Megastygarctides McKirdy, Schmidt & McGinty-Bayly, 1976
- Stygarctinae Schulz, 1951:
- *Faroestygarctus Hansen, Kristensen & Jørgensen, 2012
- *Mesostygarctus Renaud-Mornant, 1979
- *Parastygarctus Renaud-Debyser, 1965
- *Prostygarctus Rubal, Veiga, Fontoura & Sousa-Pinto, 2013
- *Pseudostygarctus McKirdy, Schmidt & McGinty-Bayly, 1976
- *Stygarctus Schulz, 1951