Anaspidesidae is a

family Family (from ) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). It forms the basis for social order. Ideally, families offer predictabili ...

of freshwater

crustacean Crustaceans (from Latin meaning: "those with shells" or "crusted ones") are invertebrate animals that constitute one group of arthropods that are traditionally a part of the subphylum Crustacea (), a large, diverse group of mainly aquatic arthrop ...

that is endemic to

Tasmania Tasmania (; palawa kani: ''Lutruwita'') is an island States and territories of Australia, state of Australia. It is located to the south of the Mainland Australia, Australian mainland, and is separated from it by the Bass Strait. The sta ...

Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller isl ...

. The family contains 3 living

genera Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial s ...

. This group of crustaceans are considered

living fossil A living fossil is a Deprecation, deprecated term for an extant taxon that phenotypically resembles related species known only from the fossil record. To be considered a living fossil, the fossil species must be old relative to the time of or ...

s. They are commonly and collectively known as the Tasmanian anaspid crustaceans. This family is originally called as Anaspididae. However, genus name ''Anaspis'' was preoccupied by the insect genus, ''Anaspis'' Geoffroy, 1762, and therefore, in 2017, the family was renamed to Anaspidesidae by Shane Ahyong and Miguel A. Alonso-Zarazaga. Anaspiesids have stalked eyes, long antennae and antennules, and a slender body with no carapace. The two species of ''Allanaspides'' and the single species of ''Paranaspides'' are all listed as vulnerable on the

IUCN Red List The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is an inventory of the global conservation status and extinction risk of biological ...

Taxonomy

After Höpel ''et al.'' (2023) *''Allanaspides'' Swain, Wilson, Hickman & Ong, 1970 **'' Allanaspides hickmani'' Swain, Wilson & Ong, 1970 – commonly known as Hickman's pygmy mountain shrimp **'' Allanaspides helonomus'' Swain, Wilson, Hickman & Ong, 1970 *''

Anaspides ''Anaspides'' is a genus of freshwater crustaceans in the family Anaspidesidae. The genus was first described in 1894 by George Malcolm Thomson. The genus was originally placed in the family, Anaspididae by Thomson, but this genus name was preo ...

'' Thomson, 1894 **''

Anaspides tasmaniae ''Anaspides tasmaniae'' is a species of fresh water crustacean of the family Anaspididae found in Tasmania. It is also known by the common names "mountain shrimp" or "chris' pseudo-mantis". It has been described as a "living fossil". ''A. tasmani ...

'' Thomson, 1892 **''

Anaspides spinulae ''Anaspides'' is a genus of freshwater crustaceans in the family Anaspidesidae. The genus was first described in 1894 by George Malcolm Thomson. The genus was originally placed in the family, Anaspididae by Thomson, but this genus name was preo ...

'' Williams, 1965 **''

Anaspides jarmani ''Anaspides jarmani'' is a species of freshwater crustacean in the family Anaspidesidae, and was first described in 2015 by Shane Ahyong This species is endemic to Tasmania Tasmania (; palawa kani: ''Lutruwita'') is an island State ...

'' Ahyong, 2015 **''

Anaspides clarkei ''Anaspides clarkei'' is a species of freshwater crustacean in the family Anaspidesidae, and was first described in 2015 by Shane Ahyong This species is endemic to Tasmania Tasmania (; palawa kani: ''Lutruwita'') is an island State ...

'' Ahyong, 2015 **''

Anaspides swaini ''Anaspides swaini'' is a species of freshwater crustacean in the family Anaspidesidae, and was first described in 2015 by Shane Ahyong This species is endemic to Tasmania Tasmania (; palawa kani: ''Lutruwita'') is an island States ...

'' Ahyong, 2015 **''

Anaspides driesseni ''Anaspides driesseni'' is a species of freshwater crustacean in the family Anaspidesidae, and was first described in 2023 by Christoph HöpelStefan Richter& Shane T. Ahyong, Shane Ahyong. In 2016 Ahyong discussed three morphologically differen ...

'' Höpel, Richter & Ahyong, 2023 **''

Anaspides richardsoni ''Anaspides richardsoni'' is a species of arthropod native to Australia Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, t ...

'' Ahyong, 2016 **''

Anaspides eberhardi ''Anaspides'' is a genus of freshwater crustaceans in the family Anaspidesidae. The genus was first described in 1894 by George Malcolm Thomson. The genus was originally placed in the family, Anaspididae by Thomson, but this genus name was preo ...

'' Ahyong, 2016 *''Paranaspides'' Smith, 1908 **''

Paranaspides lacustris Anaspidesidae is a family of freshwater crustacean that is endemic to Tasmania, Australia. The family contains 3 living genera. This group of crustaceans are considered living fossils. They are commonly and collectively known as the Tasmanian ana ...

'' Smith, 1909 **''

Paranaspides williamsi Anaspidesidae is a family (biology), family of freshwater crustacean that is endemic to Tasmania, Australia. The family contains 3 living genus, genera. This group of crustaceans are considered living fossils. They are commonly and collectively k ...

'' Ahyong, Schwentner & Richter, 2017 *'' Anaspidites'' Brooks, 1962 (

Hawkesbury sandstone Sydney sandstone, also known as the Hawkesbury sandstone, yellowblock, and yellow gold, is a sedimentary rock named after Sydney, and the Hawkesbury River north of Sydney, where this sandstone is particularly common. It forms the bedrock f ...

Triassic The Triassic ( ; sometimes symbolized 🝈) is a geologic period and system which spans 50.5 million years from the end of the Permian Period 251.902 million years ago ( Mya), to the beginning of the Jurassic Period 201.4 Mya. The Triassic is t ...

) **''Anaspidites antiquus'' (Chilton, 1929) *''

Koonaspides ''Koonaspides'' is an extinct genus of fossil crustacean in the family Anaspidesidae, from Early Cretaceous (Aptian) Koonwarra Fossil Beds in eastern Victoria, Australia. The only known species within the genus is ''Koonaspides indistinctus''.P. ...

'' Jell & Duncan, 1986 ( Koonwarra fossil bed,

Aptian The Aptian is an age (geology), age in the geologic timescale or a stage (stratigraphy), stage in the stratigraphic column. It is a subdivision of the Early Cretaceous, Early or Lower Cretaceous epoch (geology), Epoch or series (stratigraphy), S ...

Early Cretaceous The Early Cretaceous (geochronology, geochronological name) or the Lower Cretaceous (chronostratigraphy, chronostratigraphic name) is the earlier or lower of the two major divisions of the Cretaceous. It is usually considered to stretch from 143.1 ...

) **''Koonaspides indistinctus'' Jell & Duncan, 1986

References

Crustaceans of Australia Syncarida Malacostraca families {{Malacostraca-stub