Contents: By Damage and Image
(In progress)
Contents: Alphabetical
alder flea beetle
aphid management
apple and thorn skeletonizer
apple ermine moth
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
borers
branch and twig borer
brown marmorated stink bug

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

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

dogwood sawfly
Douglas fir sawfly
Douglas fir twig weevil
earwigs
elm leafminer
European pine shoot moth
European shot-hole borer
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
lacebugs
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
roseslug
sawflies
scale
sequoia pitch moth
speckled green fruitworm
spittlebug
tent caterpillars
thrips
viburnum leaf beetle
violet gall midge
western poplar clearwing
western spotted cucumber beetle
white pine weevil
whiteflies
woolly ash aphid

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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:

University of Nebraska-Lincoln Extension-Coreopsis beetle

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

eHow: The Coreopsis Beetle. Summary of some web-based information on this beetle.

Gallery

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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