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Pseudozius caystrus ?ID

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General Information

GLOBAL DISTRIBUTION: NATIVE Indian Ocean - Indonesia - Cooks - Tuamotu - Hawai‘i

COOK ISLANDS STATUS: Native; Marine, near-shore

KEY FEATURES: Carapace 15x27mm. Reddish-brown, but variable, often with dark-margined cream spots. Legs purple. Carapace oval, depressed, smooth, without clearly outlined areas. Anterolateral border with two indistinct lobes and two more distinct. Chelipeds unequal, large and smooth. Walking legs smooth with few hairs.Smooth oval carapace. [mainly after Edmondson 1962]

SIMILAR SPECIES: Very similar to Pseudozius inornatus. Only separated by expert comparison. The walking legs of inornatus have scattered tufts of hairs mainly on underside and in the joints - for those wanting to look.

Enlarged Image of 'Pseudozius caystrus ?ID'

Cook Islands Distribution

View Distribution Map

Southern Group: Present Makatea:
RR	MG	AT	MK	MT	AK	PL	TK	MN

Northern Group:
TN	MH	RK	PK	NS	SW

Key to Symbols

blank	no data
-	absent	L	localised
X	extinct 'naturally'	W	widespread
XQi	quarantine intercepted	R	recent
XQe	eradicated	?	query preceding category
P	present	T?	taxonomic query
S	seasonal	nn	present, said to have no name
O	occasional	?1	present, name not investigated
++++	very common	?2	presence not verified, no name recorded
+++	common	N/A	absent, name not expected
++	uncommon
+	rare
Cook Islands islands: RR =Rarotonga, MG = Mangaia, AT =‘Ātiu, MK=Ma‘uke, MT=Miti‘āro, AK=Aitutaki, PL=Palmerston, PN=Penrhyn, MN=Manuae, TK=Takūtea, TN=Tongareva (TS=Tongaleva Spoken, TW=Tongareva Written, they say "el" but write "r"), MH=Manihiki, RK=Rakahanga, PK=Pukapuka, NS=Nassau, SW=Suwarrow. After a Polynesian name: ^=orthography query. Countries and other: FIJ=Fiji, WT=Wallis & Futuna, SAM=Samoa, TON=Tonga, NIU=Niue, CK=Cook Islands, CKM=Cook Islands Māori, FP=French Polynesia, AUS=Australs, SOC=Societies, TAH=Tahiti, TUA=Tuamotus, MQS=Marquesas, MNG=Mangareva, PIT=Pitcain group, EAS=Easter Island, HAW=Hawai‘i, NZ=New Zealand, NZM=New Zealand Māori

Scientific Taxonomy

Pseudozius caystrus ?ID (Adams & White, 1848)
SYNONYMS: Panopeus caystrus

TAXONOMY: ANIMALIA; ARTHROPODA; CRUSTACEA; MALACOSTRACA; EUMALACOSTRACA; Eucarida; Decapoda; Reptantia; Brachyura; Brachygnatha; Brachyrhyncha; XANTHIDAE

Vouchers & References

Vouchers:
Cooks: No.032;

References:
Special Reference: Forest & Guinot 1961 [Fr.]; Edmondson 1962

Data Update History (information):
zB02, zD02

Web Resources

Citation Information

McCormack, Gerald (2007) Cook Islands Biodiversity Database, Version 2007.2. Cook Islands Natural Heritage Trust, Rarotonga. Online at http://cookislands.bishopmuseum.org.
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