Chirostyloidea is an

anomura Anomura (sometimes Anomala) is a group of Decapoda, decapod crustaceans, including hermit crabs and others. Although the names of many anomurans include the word ''crab'', all true crabs are in the sister group to the Anomura, the Brachyura (the ...

superfamily SUPERFAMILY is a database and search platform of structural and functional annotation for all proteins and genomes. It classifies amino acid sequences into known structural domains, especially into SCOP superfamilies. Domains are functional, str ...

with

squat lobster Squat lobsters are dorsoventrally flattened crustaceans with long tails held curled beneath the cephalothorax. They are found in the two superfamilies Galatheoidea and Chirostyloidea, which form part of the decapod infraorder Anomura, alongside ...

-like representatives. It comprises the three

families Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Ideall ...

Chirostylidae, Eumunididae and

Kiwaidae ''Kiwa'' is a genus of marine decapods living at deep-sea hydrothermal vents and cold seeps. The animals are commonly referred to as "yeti lobsters" or "yeti crabs", after the legendary yeti, because of their "hairy" or bristly appearance. The ge ...

. Although representatives of Chirostyloidea are superficially similar to galatheoid squat lobsters, they are more closely related to

Lomisoidea The hairy stone crab (''Lomis hirta'') is a crab-like crustacean that lives in the littoral zone of southern Australia from Bunbury, Western Australia, to the Bass Strait. It is the only species in its family (biology), family. It is wide, slow- ...

and

Aegloidea The Aeglidae are a family of freshwater crustaceans currently restricted to South America. They are the only anomurans to be found in fresh water except for a single hermit crab species, '' Clibanarius fonticola'', on Espiritu Santo, Vanuatu. Th ...

together forming the

clade A clade (), also known as a monophyletic group or natural group, is a group of organisms that are monophyletic – that is, composed of a common ancestor and all its lineal descendants – on a phylogenetic tree. Rather than the English term, ...

Australopoda. No fossils can be confidently assigned to the Chirostyloidea, although '' Pristinaspina'' may belong either in the family

or Chirostylidae.

Genera

; Chirostylidae Ortmann, 1892 *'' Chirostylus'' Ortmann, 1892 *'' Gastroptychus'' Caullery, 1896 *'' Hapaloptyx'' Stebbing, 1920 *'' Uroptychodes'' Baba, 2004 *''

Uroptychus ''Uroptychus'' is a genus of squat lobsters in the family Chirostylidae found across the Indo-Pacific The Indo-Pacific is a vast biogeographic region of Earth. In a narrow sense, sometimes known as the Indo-West Pacific or Indo-Pacific ...

'' Henderson, 1888 ; Eumunididae A. Milne-Edwards & Bouvier, 1900 *'' Eumunida'' Smith, 1883 *'' Pseudomunida'' Haig, 1979 ;

Macpherson, Jones & Segonzac, 2005 *'' Kiwa'' Macpherson, Jones & Segonzac, 2005

References

{{Taxonbar, from=Q12600649 Squat lobsters Arthropod superfamilies