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Cereal leaf beetle

Cereal leaf beetle, Oulema melanopus (L.), is best known as an introduced pest of cereal crops such as wheat, barley, oats, rye and various grass crops such as Timothy hay, perennial rye, brome, and sudangrass. Their wide host range also includes reports of their occurence on the ornamental grass, Calamagrostis. One nursery in Oregon has reported cereal leaf beetle feeding on Calamagrostis planted adjacent to a nearby wheat field.

Both the larval and adult stages of these leaf beetles can feed on their grass hosts. Currently only the adult beetles have been found on the ornamental grasses, thought to have moved over with the harvest of the adjacent wheat crop.

Web Resources:

OSU Extension: Cereal Leaf Beetle This site has useful information on biology and life stages as well as images of the larval stage. Keep in mind that the monitoring, thresholds, and management information have been developed for cereal crops rather than ornamental grasses.

WSU Extension: Tiny Wasp is Keeping Cereal Leaf Beetle in Check. This publication gives information on the classical biological control program introduced in the Western US to control this beetle.

 

Gallery
Cereal leaf beetle on Calamagrostis
cereal leaf beetle
Photo: Anonymous
Cereal leaf beetle feeding damage
cereal leaf beetle feeding damage on Calamagrostis
Photo: Anonymous
Website editor:
Robin Rosetta

Page last modified 8/9/11

 

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