Contents: By Damage and Image
(In progress)
Contents: Alphabetical
alder flea beetle
aphid management
apple and thorn skeletonizer
apple ermine moth
ash whitefly new
azalea bark scale
azalea lace bug Updated
bark lice
Barypeithes root weevil
Beneficial nematodes
biocontrol of root weevils
birch aphid
black stem borer
bluegum psyllid
branch and twig borer
brown marmorated stink bug

bronze birch borer
boxwood leafminer
boxwood psyllid
bulb flies
carpet beetle New
Calligraph californica

Ceanothus stem gall moth
cereal leaf beetle
cherry ermine moth
chilli thrips
cinnabar moth
clay colored weevil
cottony camellia scale
cutworm Updated
cypress tip moth

dogwood sawfly
Douglas fir sawfly
Douglas fir twig weevil
elm leafminer
European pine shoot moth
European shot-hole borer Updated
European wool carder bee
emerald ash borer
Fall webworm
flatheaded cedar borer
hollyhock weevil
honeylocust plant bug
honeylocust pod gall midge
Heliothis phloxiphaga
holly bud moth
huckleberry root aphids
ground mealybug
lady beetle gallery
leaf weevil
light brown apple moth
maple tip moth
maple midge
March flies
mountain ash sawfly
spruce aphid on spruce
oak ambrosia beetle
oak slug
obscure root weevil
Pacific flatheaded borer
peach tree borer
peach twig borer
pear psylla
pear leaf-curling midge
pear sawfly New
pine needle scale
poplar and willow borer
rose curculio weevil
rose midge
sequoia pitch moth
speckled green fruitworm
tent caterpillars
viburnum leaf beetle
violet gall midge
western poplar clearwing
western spotted cucumber beetle
white pine weevil
woolly ash aphid

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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.


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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