Crangonyctidae is a family of cave-dwelling freshwater amphipod crustaceans. It contains the following genera:1]
The Family Crangonyctidae is a member of the Superfamily Crangonyctoidea. Here is the complete "parentage" of Crangonyctidae:
The Family Crangonyctidae is further organized into finer groupings including:
Allocrangonyx is a genus of troglobitic amphipod crustaceans from the South Central United States. The two species are both listed as vulnerable on the IUCN Red List. The animals are blind and unpigmented. During the male's development, the outer ramus of the third uropod differentiates into secondary segments and grows to a length greater than the animal's body length. [more]
Crangonyx is a genus of in family Crangonyctidae. It contains the following species: [more]
Stygobromus is a genus of in family Crangonyctidae. It includes the following species: [more]
At least 7 species and subspecies belong to the Genus Synurella.
More info about the Genus Synurella may be found here.
