Ligiarctus is a monotypic genus of tardigrades, in the subfamily Florarctinae which is part of the family Halechiniscidae. The genus was named and described by Jeanne Renaud-Mornant in 1982. Its only species is Ligiarctus eastwardi.
References
Publications Renaud-Mornant, 1982 : Sous-famille et genre nouveaux de tardigrades marins (Arth(r)otardigrada). [New Subfamily and Genre of Underwater Tardigrades (Arthrotardigrada)] Bulletin from Muséum National d'Histoire Naturelle Section A Zoologie Biologie et Écologie Animales, vol. 4, no 1/2, pp. 89–94.