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Georissa striata

Multimedia & Additional Resources

Type	Description	Download
Image:	Shell (Georissa sp. of J.Craig)	30KB

General Information

GLOBAL DISTRIBUTION: NATIVE se.Polynesia (Cooks - Australs - ?)

COOK ISLANDS STATUS: Native, Endemic of se.Polynesia; S.Group - widespread, ?declining; Land, coastal and inland forest

SIMILAR SPECIES: Assiminea nitida has eye-lumps (vs. no lumps); and longer muzzle (vs. short muzzle).

Cook Islands Distribution

View Distribution Map

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

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

Georissa striata (Pease, 1871)
SYNONYMS: Chondrella striata Pease, 1871; Hydrocena striata Pease, 1871; Hydrocena subinsularis Mousson;

TAXONOMY: ANIMALIA; MOLLUSCA; GASTROPODA; PROSOBRANCHIA; Archaeogastropoda; Neritacea; HYDROCENIDAE

Vouchers & References

Vouchers:
Rarotonga: specimens, 1865-69, "plentiful in all parts of the group [specifically Rarotonga, Aitutaki, Mangaia, Atiu]", Garrett with ID as Condrella striata; live specimens+photo, 1995, swamp - dry forest - uplands, J.Craig with ID as Georissa sp. in thesis; dead shells only found on coast & inland status not assessed, ID as Georissa striata, Fred Brook rpt 2005/11, and is reason for this species name in DB. Mangaia: specimens, 1865-69, "plentiful in all parts of the group [specifically Rarotonga, Aitutaki, Mangaia, Atiu]", Garrett with ID as Condrella striata Atiu: specimens, 1865-69, "plentiful in all parts of the group [specifically Rarotonga, Aitutaki, Mangaia, Atiu]", Garrett with ID as Condrella striata Mitiaro: live specimens+photo, 1995, everywhere except on coast, J.Craig with ID as Georissa sp. in thesis. Aitutaki: specimens, 1865-69, "plentiful in all parts of the group [specifically Rarotonga, Aitutaki, Mangaia, Atiu]", Garrett with ID as Condrella striata; possible presence, 1992, M.Allen with ID as Georissa striata.

References:
None recorded.

Data Update History (information):
zTX, zB02, zM05b

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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