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Oryzaephilus surinamensis

Sawtoothed Grain-Beetle

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General Information

COMMON NAMES: Sawtoothed Grain-Beetle; German Getreideplattkäfer

GLOBAL DISTRIBUTION: Circumglobal

COOK ISLANDS STATUS: Introduced - Recent, Naturalised; S.Group; Land, in stored food

SIGNIFICANCE LIST: ; in stored foods

KEY FEATURES: 3mm TL. Slender dark brown beetle with 6 teeth on each side of thorax; antennae 1mm. Winged but rarely fly. LARVAE white, to 5mm.

SIMILAR SPECIES: Oryzaephilus mercator length of head behind the eye is much shorter (vs. longer). For experts with samples to compare!

Enlarged Image of 'Oryzaephilus surinamensis'

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

Oryzaephilus surinamensis (Linnaeus)
TAXONOMY: ANIMALIA; ARTHROPODA; ATELOCERATA; HEXAPODA; INSECTA; PTERYGOTA; Coleoptera; SILVANIDAE. COMMENT: Formerly in CUCUJIDAE

More Information

SIGNIFICANCE NOTES -
NEGATIVE SIGNIFICANCE: in stored foods. Comments: common in cereals, nuts and dried fruits. Larvae feed within the product; adults also attach the product.

IDENTIFICATION: To 3mm TL. Slender, dark brown, prothorax has 6 sawtooth-like projections on each side; antennae 1mm with terminal club. LARVAE white, elongate, partially flattened, to 5mm. Adults winged, but rarely fly.

Vouchers & References

Vouchers:
Rarotonga: specimens, cereals in Meatco, 8/2000, Maja Poeschko.

References:
None recorded.

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