Greenstriped Mapleworm.pdf

Insects

Extension

SP290-Y

Greenstriped Mapleworm

Frank A. Hale, Professor

Originally developed by Harry Williams, former Professor Emeritus, and

Jaime Yanes Jr., former Assistant Professor

Entomology and Plant Pathology

Thegreenstripedmapleworm Dryocampa

rubicunda (F.)isfoundthroughoutmostofthe

easternUnitedStates.Thisinsectpestprefersmaples;

however,ithasbeenreportedfeedingonvariousoaks

andboxelder.

Damage

Greenstripedmaplewormlarvae(caterpillars)

feedonleaves,consumingmostoftheleaftissue.

Theirpopulationsmaybecomelarge,causingsevere

defoliation.

Greenstriped mapleworm larva

Gerald J. Lenhard, www.forestryimages.org

Larvaeare1½inches

longwhenfullgrown,

havingcherry-redheads

andpaleyellow-green

bodies.Eightlightand

sevendarkgreenstripes

alternatelyruntheentire

lengthofthebody.Two

prominent,slender,

horn-likeprojections

arelocatedonthetop

ofthesecondsegment

Description and Life Cycle

Theinsectoverwintersasapupainthesoil.Moths

emergefromMaythroughJuly.Mothshavewoolly

bodiesandawingspanof13/4to2½inches.The

forewingisrose-pinkontheinnerandouterborders

withayellowbandbetween.Hind-wingsmaybepure

yelloworyellowwithpinkstreaksthroughout.After

mating,femalemothslaypalegreeneggsinmasses

ontheundersidesoftheleaves.Theeggshatchin

approximately10days.

Greenstriped mapleworm moth

Lacy L. Hyche, Auburn University,

www.forestryimages.org

behindthehead.Therearetworows

ofshortspinesonbothsidesofthe

body.Larvaefeedingroupsonthe

undersidesofleaveswhenyoung.

Astheymature,theyfeedsingly

onthefoliage.Larvaebecomefull-

growninaboutamonth.Theythen

crawltothegroundwherepupation

takesplace.Twogenerationsayear

commonlyoccurinTennessee.

Amount per

Insecticide

Gallon

100 Gallons

carbaryl

Carbaryl80S

Sevin(4lb/galSL)

BayerAdvancedComplete

InsectKillerforGardens

(0.126%)

11/4Tbsp

2tsp

seelabel

11/4lb

1qt

---

azadirachtin

SaferBioneem0.3%EC

AzatinXL(3%EC)

2.5-5tsp

0.6-1tsp

---

10-16 l oz

Control

Greenstripedmapleworms

havebeenshowntobeparasitized

byseveralspeciesofinsects,but

notingreatabundance.Chemical

controlmaybenecessarywhen

largepopulationsarepresent.Maple

treesmaybetreatedwithoneofthe

followingspraysduringtheperiod

fromMayuntilAugust.

cyluthrin

Tempo20WP(20%WP)

Decathlon20WP(20%WP)

BayerAdvancedPowerforce

Multi-InsectKiller(0.75%

concentrate)

---

seelabel

1.3oz(36gm)

---

beta-cyluthrin

TempoSCUltra

(1lb/galSC)

--- 1.5 l oz (45 ml)

bifenthrin

TalstarF(7.9%F)

TalstarOne(7.9%F)

---

5.4-10.8 l oz

luvalinate

Mavrik Aqualow 22.3 F 1.33-3tsp/5gal 4-10 l oz

Bacillusthuringiensis

Dipel2X(6.4%WP)

JavelinWG(7.5%WP)

0.5-1.5tsp

---

0.25-0.75lb

0.25-1.5lb

Precautionary Statement

Toprotectpeopleandtheenvironment,pesticidesshouldbeusedsafely.Thisiseveryone’sresponsibility,especially

theuser.Readandfollowlabeldirectionscarefullybeforeyoubuy,mix,apply,storeordisposeofapesticide.According

tolawsregulatingpesticides,theymustbeusedonlyasdirectedbythelabel.Personswhodonotobeythelawwillbe

subjecttopenalties.

Disclaimer Statement

Thispublicationcontainspesticiderecommendationsthataresubjecttochangeatanytime.Therecommendations

in this publication are provided only as a guide. It is always the pesticide applicator’s responsibility, by law, to read

and follow all current label directions for the speciic pesticide being used. The label always takes precedence over the

recommendationsfoundinthispublication.

SP290Y 06-0267

Programs in agriculture and natural resources, 4-H youth development, family and consumer sciences, and resource development.

University of Tennessee Institute of Agriculture, U.S. Department of Agriculture and county governments cooperating.

UT Extension provides equal opportunities in programs and employment.

Useoftradeorbrandnamesinthispublicationisforclarityandinformation;itdoesnotimplyapprovalofthe

producttotheexclusionofothersthatmaybeofsimilar,suitablecomposition,nordoesitguaranteeorwarrantthe

standardoftheproduct.Theauthor(s),theUniversityofTennesseeInstituteofAgricultureandUniversityofTennessee

Extensionassumenoliabilityresultingfromtheuseoftheserecommendations.

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