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Somewhat better ventral view.
Added synonyms.
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| species = sitchensis
| species = sitchensis
| authority = [[Johann Friedrich von Brandt|Brandt]], 1853<ref>{{Cite journal|last=von Brandt|first=Johann Friedrich|author-link=Johann Friedrich von Brandt|date=1853|title=Ueber eine neue Art der Gattung Cryptolithodes (''Cryptolithodes sitchensis'')|trans-title=About a new species of the genus Cryptolithodes (''Cryptolithodes sitchensis'')|url=https://archive.org/stream/bulletindelacla00naukgoog#page/n153/mode/2up|journal=Bulletin de la Classe physico-mathématique de l'Académie Impériale des Sciences de Saint Pétersbourg|issn=1029-998X|language=de|volume=11|pages=254–256}}</ref>
| authority = [[Johann Friedrich von Brandt|Brandt]], 1853<ref>{{Cite journal|last=von Brandt|first=Johann Friedrich|author-link=Johann Friedrich von Brandt|date=1853|title=Ueber eine neue Art der Gattung Cryptolithodes (''Cryptolithodes sitchensis'')|trans-title=About a new species of the genus Cryptolithodes (''Cryptolithodes sitchensis'')|url=https://archive.org/stream/bulletindelacla00naukgoog#page/n153/mode/2up|journal=Bulletin de la Classe physico-mathématique de l'Académie Impériale des Sciences de Saint Pétersbourg|issn=1029-998X|language=de|volume=11|pages=254–256}}</ref>
| synonyms =
{{Species list
| Cryptolithodes altafissura | Spence Bate, 1865
| Cryptolithodes alta-fissura | Spence Bate, 1865
}}
| synonyms_ref = <ref name="WoRMS">{{cite WoRMS|last=De Grave|first=Sammy|date=25 July 2022|title=''Cryptolithodes sitchensis'' Brandt, 1853|id=550616|access-date=4 December 2024}}</ref>
}}
}}



Revision as of 20:11, 4 December 2024

Cryptolithodes sitchensis
An umbrella crab from the intertidal at Bean Hollow State Beach, Pescadero, CA, USA.
An umbrella crab being held in somebody's hand. The dorsal carapace is facing downward, revealing the venter (underside), and the anterior is toward the bottom of the frame. The abdomen, walking legs, chelipeds, and mouthparts are visible. The chelipeds conceal the eyes and all but a small portion of the antennae.
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Arthropoda
Class: Malacostraca
Order: Decapoda
Suborder: Pleocyemata
Infraorder: Anomura
Family: Lithodidae
Genus: Cryptolithodes
Species:
C. sitchensis
Binomial name
Cryptolithodes sitchensis
Brandt, 1853[1]
Synonyms[2]
  • Cryptolithodes altafissura Spence Bate, 1865
  • Cryptolithodes alta-fissura Spence Bate, 1865

Cryptolithodes sitchensis, known as the umbrella crab and the turtle crab,[3][4] is a species of king crab native to coastal regions of the northeastern Pacific Ocean, ranging from Sitka, Alaska to Point Loma, California.[5] Its carapace extends over its legs such that when it pulls in its legs, it resembles a small stone. It lives in rocky areas from the low intertidal to depths of 37 m (121 ft).[5][6]

Description

Cryptolithodes sitchensis' carapace extends over all of its three pairs of walking legs and two chelipeds. The carapace can be over 5 cm (2.0 in) wide at the adult stage and ranges from neutral sandy colors to bright oranges, reds, and purples.[4] In adults, the first abdominal segment is fused with the second.[7] The third, fourth, and fifth segments are each composed of one median (inner) plate and a pair of lateral (outer) plates, although the third segment has accessory plates in two small regions on the left and right surrounded by the second segment, third median plate, and third lateral plates.[7] Males have an equal number of these plates on both sides, but females often have more accessory plates to the left of the median.[7]

References

  1. ^ von Brandt, Johann Friedrich (1853). "Ueber eine neue Art der Gattung Cryptolithodes (Cryptolithodes sitchensis)" [About a new species of the genus Cryptolithodes (Cryptolithodes sitchensis)]. Bulletin de la Classe physico-mathématique de l'Académie Impériale des Sciences de Saint Pétersbourg (in German). 11: 254–256. ISSN 1029-998X.
  2. ^ De Grave, Sammy (25 July 2022). "Cryptolithodes sitchensis Brandt, 1853". WoRMS. World Register of Marine Species. Retrieved 4 December 2024.
  3. ^ Snow, C. Dale (April 1978). "Interesting Crabs of Oregon". Oregon Wildlife. Vol. 33, no. 4. Oregon Fish and Wildlife Commission. p. 6.
  4. ^ a b Kozloff, Eugene N. (1993). Seashore Life of the Northern Pacific Coast: An Illustrated Guide to Northern California, Oregon, Washington, and British Columbia. Seattle, WA: University of Washington Press. pp. 192, 255. ISBN 0-295-96084-1. LCCN 83001130 – via the Internet Archive.
  5. ^ a b Jensen, Gregory C. (1995). Pacific Coast Crabs and Shrimps. Sea Challengers. ISBN 0-930118-20-0. LCCN 94039292.
  6. ^ Hall, Sally; Thatje, Sven (October 15, 2009). "Global bottlenecks in the distribution of marine Crustacea: temperature constraints in the family Lithodidae" (PDF). Journal of Biogeography. 36 (11): 2125–2135. doi:10.1111/j.1365-2699.2009.02153.x. Archived (PDF) from the original on July 24, 2018 – via the University of Southampton.
  7. ^ a b c McLaughlin, Patsy A.; Lemaitre, Rafael (2000). "Aspects of evolution in the anomuran superfamily Paguroidea: one larval prospective" (PDF). Invertebrate Reproduction and Development. 38 (3): 159–169. doi:10.1080/07924259.2000.9652453. S2CID 55956527. Archived (PDF) from the original on February 27, 2012.