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WEB OF DETRUCTION:
Caterpillar species of concern to PNW nurseries
Compiled by Robin Rosetta, Department of Horticulture/OSU/NWREC
and James Young, Department of Botany and Plant Pathology, OSU/Corvallis
SPECIES LIST*
*Species with an asterisk are considered a threat but
not yet established in the PNW.
Leafrollers and leaftiers
fruittree leafroller, Archips argyrospila
European leafroller, Archips rosanus
orange tortrix, Argyrotaenia franciscana
carnation tortrix, Cacaecimorpha pronubana
obliquebanded leafroller, Choristoneura rosaceana
cherry
bark tortrix, Enarmonia formosana
African carnation tortrix, Epichoristodes acerbella Walker
holly
bud moth [blackheaded fireworm], Rhopobota naevana
omnivorous leafroller, Platynota stultana
apple pandemis, Pandemis pyrusana
threelined leafroller, P. limitata
dark fruit tree tortrix, P. heparana
omnivorous leaftier, Cnephasia longana
*strawbery tortrix, Acleris comariana
*light
brown apple moth, Epiphyas postvittana
Webworms and budworms
cotoneaster webworm, Cremona cotoneastri
western spruce budworm, Choristoneura occidentalis
spruce budworm, C. fumiferana
ponderosa pine budworm, C. lambertiana
jack pine budworm, C. pinus ssp.
juniper webworm, Dichomeris marginella
cypress leaftier, Epinotia subviridis
Skeletonizers
apple
and thorn skeletonizer, Choreutis pariana
oak skeletonizer, Bucculatrix ainsliella
Tent Caterpillars/ Large
web makers
western
tent caterpillar, Malacosoma californicum
Pacific tent caterpillar, M constrictum
forest tent caterpillar, M dispar
fall webworm,
Hyphantria cunea
apple
ermine moth, Yponomeuta malinellus
cherry
ermine moth, Yponomeuta padella
Broadleaf defoliators and leaf feeders
imported cabbageworm, Artogeia rapae[=Pieris rapae]
tobacco or geranium budworm, Heliothis virescens
corn earworm/tomato fruitworm/cotton bollworm, Helicoverpa zea
western oak looper, Lambdina fiscellaria somniaria
satin moth, Leucoma salicis
green fruitworm, Lithophane antennata
spiny elm caterpillar (mourning cloak butterfly), Nymphalis antiopa
*gypsy
moth, Lymantria dispar
cabbage looper, Trichoplusia ni
alfalfa looper, Autographa californica
silverspotted tiger moth, Lophocampa argentata
*vine moth, Eupoecilia ambiguella
*green oak Tortrix, Tortrix viridana
winter moth, Operophtera brumata
*the lappet, Gastropacha quercifolia
*silver y moth, Autographa gamma
Conifer defoliator and needle
feeders
*Asian
gypsy moth, Lymantria dispar (Asian strain)
rusty tussock moth, O. antigua
whitemarked tussock moth, Orygia leucostigma
western tussock moth, O. vetusta
douglas-fir tussock moth, O. pseudotsugata
*nun
moth, Lymantria monacha
*pine tree lappet, Dendrolimus pini
Cutworms
spotted cutworm, Xestia c-nigrum
black cutworm, Agrotis ipsilon
variegated cutworm, Peridroma saucia
yellowheaded cutworm, Apamea amputatrix
glassy cutworm, Apamea devastator
large yellow underwing, Noctua pronuba
true armyworm, Pseudaletia unipuncta
western yellowstriped armyworm, Spodoptera praefica (Grote)
Bagworms
snailcase bagworm, Apterona helix
Leafminers
western tentiform leafminer, Phyllonorycter elmaella
lilac leafminer, Caloptilia syringella
azalea leafminer, C. azaleella
*aspen leafblotch miner, Phyllonorycter tremuloidiella
spruce needleminer, Endothenia albolineana
cypress
tipminer, Argyresthia cupressella
European spruce needleminer, Epinotia nanana
larch casebearer, Coleophora laricella
Coneworms
fir coneworm, Dioryctria abietivorella
Tip feeders
European pine
shoot moth, Rhyacionia buoliana
Tip borers
peach twig borer, Anarsia lineatella
maple
twig borer, Proteoteras aesculana
ceanothus
stem gall moth, Periploca ceanothiella
Clearwing borers
peachtree
borer, Synanthedon exitiosa
western
poplar clearwing, Parathrene robiniae
Douglas-fir pitch moth, S. novaroensis
sequoia
pitch moth, S. sequoiae
*dusky clearwing, Paranthrene tabaniformis,
Fruit pests
*summer fruit tortrix moth, Adoxophyes orana
*plum fruit maggot, Cydia funebrana
*peach fruit moth, Carposina niponensis
speckled
green fruitworm, Orthosia hibisci
Acknowledgements: The authors would like to thank Eric
LaGasa, WSDA, Todd Murray, WSU Extension, and Richard Worth, ODA for their
comments and review of this list.
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