Sawtoothed Grain Beetle
Oryzaephilus surinamensis (Linnaeus, 1758)

Taxonomy

Kingdom	Animalia
Phylum	Arthropoda
Subphylum	Hexapoda
Class	Insecta
Order	Coleoptera
Family	Silvanidae
Genus	Oryzaephilus
Species	Oryzaephilus surinamensis (Linnaeus, 1758)

Description

Diagnostic characters

Ecological class: Accidental

Distribution

Range

Known from one county in Iowa.

Continent

North America

Country

United States

States and provinces

Iowa

Counties

Iowa: Dubuque

Conservation and management

NatureServe

GNR Unranked

National ranks

United States: NNA
Canada: NNA

Subnational ranks

Montana: SNA Not Applicable
Rhode Island: SNA Not Applicable
Saskatchewan: SNA Not Applicable
British Columbia: SNA Not Applicable
Manitoba: SNA Not Applicable
Ontario: SNA Not Applicable
Newfoundland and Labrador: SNA Not Applicable
Quebec: SNA Not Applicable
New Brunswick: SNA Not Applicable
Alberta: SNA Not Applicable
Nova Scotia: SNA Not Applicable

Ranks looked up 2 July 2026. Conservation status changes, and a rank here is as current as that date and no more.

State and federal status

Not listed under the U.S. Endangered Species Act.

References

Peck, S.B. & Christiansen, K. 1990. Evolution and zoogeography of the invertebrate cave faunas of the Driftless Area of the upper Mississippi River Valley of Iowa, Minnesota, Wisconsin, and Illinois, U.S.A. Canadian Journal of Zoology 68: 73–88. doi:10.1139/z90-012

This account was last revised 6 September 2026. Conservation ranks were looked up 2 July 2026.

How to cite this account

Oryzaephilus surinamensis (Linnaeus, 1758). Cave Biology Data Portal, account SP-2754. https://cavebiology.org/species/oryzaephilus-surinamensis/ (accessed 22 October 2026).

Data sources and funding are listed in the Acknowledgments.

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