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Sunflower beetle

Scientific Name
Zygogramma exclamationis
Scientific Author
(Fabricius, 1798)
Taxonomy
(Coleoptera: Chrysomelidae: Chrysomelinae: Chrysomelini)
Status
Exotic species - absent from Australia
Reliability
High
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Diagnostic Notes
Zygogramma is a large genus of leaf beetles in the subfamily Chrysomelinae, which include approximetely 100 species.

The sunflower beetle, Zygogramma exclamationis , is one of the major economic insect pests of sunflower in the northern plains. It is native to North America and has moved from feeding on wild sunflowers to become the major defoliating pest of cultivated sunflower.

This insect has been reported from southern Canada to northern Texas, Arizona, New Mexico, and west to Utah. High populations often necessitate control measures in cultivated sunflower grown in North and South Dakota and Minnesota. Although present in the central and southern plains, the sunflower beetle has not been considered a serious pest of cultivated sunflower in these regions.

Identification

Adult: The head of the adult is reddish-brown and the thorax is pale cream-colored with a reddish-brown patch at the base. Each wing cover is cream-colored and has three dark stripes that extend its length. A shorter lateral stripe ends at the middle of the wing in a small dot that resembles an exclamation point. The beetle is 6 to 12 mm long and 2 to 4 mm wide.

More Information
Specimen Contact
Museum Victoria
Author
McCaffrey, Sarah & Ken Walker
Created
29/03/2012 03:08 AEST
Last Updated
16/04/2012 12:44 AEST
Citation
McCaffrey, Sarah & Ken Walker (2012) Sunflower beetle (Zygogramma exclamationis) Updated on 4/16/2012 12:44:15 PM 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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