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lesser grain borer

Scientific Name
Rhyzopertha dominica
Scientific Author
(Fabricius, 1775)
Taxonomy
(Coleoptera: Bostrichidae: Dinoderinae)
Status
Exotic Species Establishment in Australia
Reliability
High
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Diagnostic Notes
The subfamily Dinoderinae is characterised by:

- Hind coxae contiguous or closely approximated

- Pronotum hood-like; head deeply inserted into the pronotum underneath, head not entirely visible from above

- Pronotum with posterolateral carina but carina not present along entire lateral margin

- Pronotum anterior margin rounded or conical shaped or truncate

- Pronotum with medium tooth most prominent

- Head with plane or labrum angled downwards from a raised clypeus

- Tarsal segment 1 as long as or longer than segment 2; Segment 3 as long as or longer than segment 2.

The genus Rhyzopertha is characterised by:

- Body length: 3.5-4.2mm

- Colour and shape: red-brown to black-brown with a cylindrical body

- Pronotum evenly or broadly rounded or tapering in front, teeth along anterior margin arranged in a curve

- Pronotum with posterolateral carian - may be weakly developed

- Pronotum basal half granulate

- Eltyra noticeably more than 2.0x as long as pronotum

- Second antennal segment more than 0.5x as long as first

- Last three segments of antennae form a club.

There is only one known (cosmopolitan) species: Rhyzopertha dominica.

Source: Graham Goodyer 2008 (unpublished) Identification of Bostrichid beetles to Genus and Species.
More Information
Specimen Contact
Museum Victoria
Author
Walker, K.
Created
25/09/2006 07:11 AEST
Last Updated
06/09/2011 10:05 AEST
Citation
Walker, K. (2006) lesser grain borer (Rhyzopertha dominica) Updated on 9/6/2011 10:05:18 AM Available online: PaDIL - http://www.padil.gov.au.
Image Use
Free for use under the Creative Commons Attribution 3.0 Australia License

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