Tags: Crustacean.
Gelyella is a genus of freshwater copepods which are surrounded by mystery. They live in groundwater in karstic areas of southern France and western Switzerland. The two species are the only members of the family Gelyellidae and although previously placed in the order Harpacticoida a new order Gelyelloida was erected for this family alone.Gelyella shows some paedomorphosis in which animals reach sexual maturity while still partly resembling juveniles.