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
azalea sawfly New
bark lice
Barypeithes root weevil Updated
Beneficial nematodes
biocontrol of root weevils
birch aphid Updated
black stem borer
bluegum psyllid
branch and twig borer
brown marmorated stink bug

bronze birch borer
boxwood leafminer
boxwood psyllid Updated
bulb flies
carpet beetle (images)
Calligraph californica

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

dogwood sawfly
Douglas fir sawfly
Douglas fir twig weevil
elm leafminer
European pine shoot moth
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 aphids Updated
maple tip moth
maple midge
March flies Updated
mountain ash sawfly
Narcissus bulb fly Updated
spruce aphid on spruce
oak ambrosia beetle
oak slug
obscure root weevil
Pacific flatheaded borer
peach tree borer
peach twig borer
pear blight beetle Updated
pear psylla
pear leaf-curling midge
pear sawfly
pine needle scale
pine and cone spittlebug New
poplar and willow borer
rose curculio weevil
rose midge
sequoia pitch moth
speckled green fruitworm
meadow spittlebug updated
tent caterpillars
viburnum leaf beetle
violet gall midge
western poplar clearwing
western spotted cucumber beetle
white pine weevil Updated
woolly ash aphid
woolly beech aphid Updated

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Calligrapha californica

This Chrysomelid leaf beetle has a targeted host range and in nurseries it is found on occasion on coreopsis, also known as tickweed. You can find mention of it as coreopsis beetle or even tickweed beetle. It is also reputed to feed on ragweed. Both adults and larvae feed causing leaf skeletonization. There is limited information available on this insect. The adults have been found in the late May-early June here in Oregon. This is also a time when they are noted mating.

Management note: Some nurseries use the Bt var. tenebrionis (Novodor) to control the young larval stages of the beetle.

Web resources:

Blackstone, Victoria. About the Coreopsis beetle.

The Home Garden: Calligrapha leaf beetles. This site has images of the larvae and their damage.

Orginal publication: 6/6/2011
Latest publication: 5/12/2016


Author: R.L. Rosetta, Extension Nursery Integrated Pest Management, Department of Horticulture, Oregon State University




Calligrapha californica adult
Calligrapha californica
Photo: Rosetta, Oregon State University
Calligrapha beetles often come in bunches. It is not infrequent to find mating pairs
Calligrapha californica infestation
Photo: Cindy M.
Website editor:
Robin Rosetta

Page last modified 6/8/11


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