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Sitophilus zeamais

Granary Weevil

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General Information

COMMON NAMES: Granary Weevil

GLOBAL DISTRIBUTION: RANGE Global

COOK ISLANDS STATUS: Introduced - Recent, Naturalised; Land, in stored foods; in stored foods

KEY FEATURES: Small dark brown insect to 5mmTL (incl. Snout); adult flies and has round thoracic pits. LARVAE short; very humped with flat ventral side, living inside grains and cereals.

SIMILAR SPECIES: See under Rice Weevil (Sitophilus oryzae).

Cook Islands Distribution

View Distribution Map

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

Sitophilus zeamais Motschulsky
TAXONOMY: ANIMALIA; ARTHROPODA; ATELOCERATA; HEXAPODA; INSECTA; PTERYGOTA; Coleoptera; CURCULIONIDAE

More Information

IDENTIFICATION: Weevil with long snout, 5mmTL (incl. Snout). Uniformly brown to dark-brown. Winged. Thorax pits round. Wing-cover has pit-grooves separated by ridges of almost equal width. LARVAE cream, short, very humped dorsally, ventrally flat without any legs. Adults live about 8 months, development from egg to adult takes 1-5 months, depending upon temperature.

Vouchers & References

Vouchers:
Rarotonga: specimen, 1925, G.Wilder, in BPBM ID by R.T.Thompson 1992 as Sitophilus zeamais.

References:
None recorded.

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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