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Bradybaena similaris

Asian Trampsnail

Multimedia & Additional Resources

Type	Description	Download
Image:	Adult on leaf	65KB
Image:	Adult, Cook Islands	63KB
Image:	Adult, Rarotonga	18KB

General Information

COMMON NAMES: Asian Trampsnail, white bradybaena snail, Asian Tramp Snail

GLOBAL DISTRIBUTION: NATIVE se.Asia - Indonesia; EXOTIC EXOTIC circumtropical and subtropical, incl. many Pacific islands

COOK ISLANDS STATUS: Introduced - Recent, Naturalised; S.Group - common; Land, horticultural - mountains; disturbed and undisturbed habitats, gardens

SIGNIFICANCE LIST: ; Pest - mild

KEY FEATURES: Shell a low spiral (helicoid), to 15x11mm(ØxH). SHELL colour variable - pale brownish to yellow-brown, 0-1 dark spiral stripe; ~5 whorls, spire convex; aperture with out-turned lip. ANIMAL grey to brown, tentacles dark. REPRODUCTION hermaphroditic, mutual mating, lay ~20 eggs (each 2mmØ) just under surface of the soil, hatch in ~15days.

Enlarged Image of 'Bradybaena similaris'

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

Bradybaena similaris (Rang, 1831)
SYNONYMS: Helix similaris Rang, 1831; Bradybaena similaris (Férussac, 1821) [mistaken: Rang 1831 cited Férussac 1821 as author, but similaris Férussac, 1821 is not valid]

TAXONOMY: ANIMALIA; MOLLUSCA; GASTROPODA; PULMONATA; Stylommatophora; Sigmurethra; Holopoda; Helicaea; BRADYBAENIDAE

More Information

SIGNIFICANCE NOTES -
NEGATIVE SIGNIFICANCE: Pest - mild. Comments: spread with plants

Vouchers & References

Vouchers:
None Recorded.

References:
None recorded.

Data Update History (information):
zTX, zB02, zM02, zD05b

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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