''Periclimenaeus'' is a genus of decapod

crustaceans Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean group ...

of the family

Palaemonidae Palaemonidae is a family of shrimp in the order Decapoda. Many species are carnivores that eat small invertebrates, and can be found in any aquatic habitat except the deep sea. One significant genus is ''Macrobrachium'', which contains commerc ...

which is part of the

infraorder Order ( la, ordo) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between family and class. In biological classification, the order is a taxonomic rank used in the classification of organisms and ...

Caridea The Caridea, commonly known as caridean shrimp or true shrimp, are an infraorder of shrimp within the order Decapoda. This infraorder contains all species of true shrimp. They are found widely around the world in both fresh and salt water. Many ot ...

. The genus was named by the English carcinologist

Lancelot Alexander Borradaile Lancelot Alexander Borradaile (1872 – 20 October 1945) was an English zoologist, noted for his work on crustaceans and his books ''The Invertebrata'' and ''Manual of Elementary Zoology''. Legacy Borradaile may be best known for his undergradua ...

in 1915. He set out the distinguishing features of the genus as: ''Pericimaenaeus robustus'' is known only from the type specimen which was collected off

Amirante Islands The Amirante Islands (''Les Amirantes'') are a group of coral islands and atolls that belong to the Outer Islands of the Seychelles. They stretch about 155 km from the African Banks (African Islands) in the north to Desnœufs (Isle des N ...

by the Western Indian Ocean Expeditions of Prof. J. Stanley Gardiner and described in 1915 and again in 1917 by Borradaile, it was re-described by Dr A.J. "Sandy" Bruce of the

Queensland Museum The Queensland Museum is the state museum of Queensland, dedicated to natural history, cultural heritage, science and human achievement. The museum currently operates from its headquarters and general museum in South Brisbane with specialist mu ...

in 2005.

Biological notes

''Periclimenaeus'' consists of number of species of small shrimps classified in the subfamily Pontoniinae. They occur mainly in tropical seas, especially in and around coral reefs. ''Periclimanaeus'' shrimps live in association with a variety of hosts, mostly

sponge Sponges, the members of the phylum Porifera (; meaning 'pore bearer'), are a basal animal clade as a sister of the diploblasts. They are multicellular organisms that have bodies full of pores and channels allowing water to circulate through t ...

s and

ascidian Ascidiacea, commonly known as the ascidians, tunicates (in part), and sea squirts (in part), is a polyphyletic class in the subphylum Tunicata of sac-like marine invertebrate filter feeders. Ascidians are characterized by a tough outer "tunic" ...

tunicate A tunicate is a marine invertebrate animal, a member of the subphylum Tunicata (). It is part of the Chordata, a phylum which includes all animals with dorsal nerve cords and notochords (including vertebrates). The subphylum was at one time ca ...

s, where they normally live in the hosts' internal cavities as pairs formed of a male and a female. Characteristics of the genus include the presence of grossly unequal chelae on the second pair of walking legs, the larger of which has a conspicuous molar process on the seventh and terminal segment of the leg, which sits opposite a depression on the fixed finger, this is used to produce sound, a feature which is convergent with similar structures in the related genus ''

Coralliocaris ''Coralliocaris'' is a genus of shrimps belonging to the family Palaemonidae Palaemonidae is a family of shrimp in the order Decapoda. Many species are carnivores that eat small invertebrates, and can be found in any aquatic habitat except t ...

'' and in some unrelated genera of snapping shrimps from the family

Alpheidae Alpheidae is a family of caridean snapping shrimp, characterized by having asymmetrical claws, the larger of which is typically capable of producing a loud snapping sound. Other common names for animals in the group are pistol shrimp or alpheid s ...

Species

''Periclimenaeus'' is the genus in the Palaemonidae with the second highest number of species with their distribution centred on the Indo-West Pacific region where there are 60 or so species with a further 14 identified so far in the Atlantic and eastern Pacific. The first species to be described was described from specimens caught in the

Torres Strait The Torres Strait (), also known as Zenadh Kes, is a strait between Australia and the Melanesian island of New Guinea. It is wide at its narrowest extent. To the south is Cape York Peninsula, the northernmost extremity of the Australian mai ...

by HMS ''Alert'' during 1881-82. These specimens were described by Edward J. Miers as ''Coralliocaris tridendatus'', this was then assigned to ''Periclimenaeus'' as ''P. tridentatus'' after Borradaile named the genus. The following species are currently recognised: * '' Periclimenaeus ancylodactylus'' Bruce, 2014 * '' Periclimenaeus arabicus'' (Calman, 1939) * '' Periclimenaeus ardeae'' Bruce, 1970 * ''

Periclimenaeus arthrodactylus ''Periclimenaeus'' is a genus of decapod crustaceans of the family Palaemonidae which is part of the infraorder Caridea. The genus was named by the English carcinologist Lancelot Alexander Borradaile in 1915. He set out the distinguishing featu ...

'' Holthuis, 1952 * '' Periclimenaeus ascidiarum'' Holthuis, 1951 * ''

Periclimenaeus atlanticus ''Periclimenaeus'' is a genus of decapod crustaceans of the family Palaemonidae which is part of the infraorder Caridea. The genus was named by the English carcinologist Lancelot Alexander Borradaile in 1915. He set out the distinguishing featu ...

'' (Rathbun, 1901) * ''

Periclimenaeus aurae ''Periclimenaeus'' is a genus of decapod crustaceans of the family Palaemonidae which is part of the infraorder Caridea. The genus was named by the English carcinologist Lancelot Alexander Borradaile in 1915. He set out the distinguishing featu ...

'' dos Santos, Calado & Araújo, 2008 * ''

Periclimenaeus aurantiacus ''Periclimenaeus'' is a genus of decapod crustaceans of the family Palaemonidae which is part of the infraorder Caridea. The genus was named by the English carcinologist Lancelot Alexander Borradaile in 1915. He set out the distinguishing featu ...

'' Bruce, 2014 * ''

Periclimenaeus bermudensis ''Periclimenaeus'' is a genus of decapod crustaceans of the family Palaemonidae which is part of the infraorder Caridea. The genus was named by the English carcinologist Lancelot Alexander Borradaile in 1915. He set out the distinguishing featu ...

'' (Armstrong, 1940) * ''

Periclimenaeus bidentatus ''Periclimenaeus'' is a genus of decapod crustaceans of the family Palaemonidae which is part of the infraorder Caridea. The genus was named by the English carcinologist Lancelot Alexander Borradaile in 1915. He set out the distinguishing featu ...

'' Bruce, 1970 * ''

Periclimenaeus bouvieri ''Periclimenaeus'' is a genus of decapod crustaceans of the family Palaemonidae which is part of the infraorder Caridea. The genus was named by the English carcinologist Lancelot Alexander Borradaile in 1915. He set out the distinguishing featu ...

Periclimenaeus robustus ''Periclimenaeus'' is a genus of decapod crustaceans of the family Palaemonidae which is part of the infraorder Caridea. The genus was named by the English carcinologist Lancelot Alexander Borradaile in 1915. He set out the distinguishing featu ...

References

{{Taxonbar, from=Q4482956 Palaemonoidea