Cirolana cranchii

Cirolana cranchii is a species of isopod crustacean.

Cirolana cranchii
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Subphylum:
Crustacea
Class:
Malacostraca
Order:
Isopoda
Suborder:
Cymothoida
Family:
Cirolanidae
Genus:
Cirolana
Species:
C. cranchii
Binomial name
Cirolana cranchii
Leach, 1818[1]
Synonyms

Nelocira swainsonii
Eurydice swainsonii
Conilera grampoides
Cirolana borealis[2]

History and etymology

Cirolana cranchii was described by the English zoologist William Elford Leach in 1818; he named the genus anagramatically after an unknown woman called Caroline/Carolina, and the species after his friend and collector John Cranch.[3][4]

C. cranchii is the type species of the genus Cirolana, which in turn is the type genus for the family Cirolanidae.[2] The type locality is Cornwall, Great Britain.[1][2]

Distribution

The species is found around the British Isles and the northwestern coasts of Portugal, Spain and France, with the greatest abundance around the western coasts of Ireland, Cornwall and Brittany.[5] The species has also been recorded from the North Sea, the Mediterranean, and the coasts of Australia.[6] Bruce and Ellis consider only the eastern North Atlantic and Mediterranean records reliable.[2]

Description

The adult male is between 9.0 and 19.1 mm long and about 3 times as long as it is wide. The head (cephalon) lacks a forward-pointing spine (rostral process). The body consists of 11 visible segments each covered in a smooth dorsal scale behind the head, with a triangular tail (pleotelson).[2] There are six joints to the abdomen. The legs are used for walking and have small claws.[4] Tail paddles (uropods) extend beyond the point of the tail. The female has a wider pleotelson and non-angled uropods, and lacks the dense bristles (setae) on these parts. Females are between 9.6 and 19.2 mm long. Young males resemble females.[2]

References
  1. "Cirolana cranchii". Integrated Taxonomic Information System.
  2. Bruce, Niel L.; Ellis, Joan (1983). "Cirolana cranchi Leach, 1818 (Crustacea: Isopoda: Cirolanidae) redescribed, with notes on its distribution)". Bulletin of the British Museum (Natural History), Zoology Series. 44 (2): 75–84.
  3. David M. Damkaer (2002). "Adding pages". The Copepodologist's Cabinet: A Biographical and Bibliographical History, Volume 1. Memoirs of the American Philosophical Society, Volume 240. American Philosophical Society. pp. 131–155. ISBN 978-0-87169-240-5.
  4. White, Adam (1857). A Popular History of British Crustacea; Comprising a Familiar Account of Their Classification and Habits. Lovell Reeve. pp. 249–250.
  5. "AquaMaps for Cirolana cranchii (Year 2050 range)". EOL. Encyclopedia of Life. Retrieved 10 November 2014.
  6. "Cirolana cranchii". EOL. Encyclopedia of Life. Retrieved 10 November 2014.
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