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

Back to Home

Contact Us

Ceanothus stem gall moth

A sporatic but potentially damaging pest, the ceanothus stem gall moth, Periploca ceanothiella (Cosens), is present throughout the west coast in concert with the distribution of Ceanothus species. The moth lays eggs on the buds and flowers of Ceanothus. The young larvae bore into the stem and feed within causing tissue to gall. The larvae overwinter inside these galls which are very noticeable in the early spring. They then pupate and emerge as adult moths in summer.

Research by Munro in 1963 showed a wide range of susceptibility of Ceanothus species. Pruning out and disposing of galled materials may reduce overall damage as the moth only has one generation a year.


Munro, J.A. 1963. Biology ofthe Ceanothus stem-gall moth, Periploca ceanothiella (Cosens). J. Res. Lepid. 1:183-190.

Johnson, W.T. and H.H. Lyon. 1991. Insects that feed on trees and shrubs. 2nd ed. Cornell University Press, New York. pp.438-439.

Galls of ceanothus stem gall moth
galls of ceanothus stem gall moth
Photo: Rosetta
Closeup of gallscloseup of gall
Photo: Rosetta
Gall near flower buds
gall near flower buds
Photo: Rosetta
Website editor:
Robin Rosetta

Page last modified 3/14/05


Before applying any of the information found on this site, please read our disclaimer.
Copyright © 2016, All Rights Reserved