Field Guidecontrol of Weeds
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US Department of Agriculture FOR THE BIOLOGICALFIELD GUIDECONTROL OF WEEDS IN THE NORTHWEST Rachel Winston, Carol Bell Randall, Rosemarie De Clerck-Floate, Alec McClay, Jennifer Andreas and Mark Schwarzländer Forest Health Technology FHTET-2014-08 Enterprise Team May 2014 he Forest Health Technology Enterprise Team (FHTET) was created in T1995 by the Deputy Chief for State and Private Forestry, USDA, Forest Service, to develop and deliver technologies to protect and improve the health of American forests. This book was published by FHTET as part of the technology transfer series. http://www.fs.fed.us/foresthealth/technology/ Cover photos: Aphthona nigriscutis (R. Richard, USDA APHIS), Mecinus spp. (Bob Richard, USDA APHIS PPQ), Chrysolina hypericic quadrigemina, Eustenopus villosus (Laura Parsons & Mark Schwarzländer, University of Idaho), Cyphocleonus achates (Jennifer Andreas, Washington State University Extension) The U.S. Department of Agriculture (USDA) prohibits discrimination in all its programs and activities on the basis of race, color, national origin, sex, religion, age, disability, political beliefs, sexual orientation, or marital or family status. (Not all prohibited bases apply to all programs.) Persons with disabilities who require alternative means for communication of program information (Braille, large print, audiotape, etc.) should contact USDA’s TARGET Center at 202-720-2600 (voice and TDD). To file a complaint of discrimination, write USDA, Director, Office of Civil Rights, Room 326- W, Whitten Building, 1400 Independence Avenue, SW, Washington, D.C. 20250-9410, or call 202-720-5964 (voice and TDD). USDA is an equal opportunity provider and employer. The use of trade, firm, or corporation names in this publication is for the information and convenience of the reader. Such use does not constitute an official endorsement or approval by the U.S. Department of Agriculture or the Forest Service of any product or service to the exclusion of others that may be suitable. Federal Recycling Program Printed on recycled paper BIOLOGICAL CONTROL OF WEEDS IN THE NORTHWEST Rachel L. Winston Carol Bell Randall Environmental Consultant Entomologist, Forest Health Protection MIA Consulting, LLC USDA Forest Service Sandpoint, ID, USA Coeur d’Alene, ID, USA [email protected] [email protected] Rosemarie A. De Clerck-Floate Alec S. McClay Weed Biocontrol, Lethbridge Research Centre McClay Ecoscience Agriculture and Agri-Food Canada Sherwood Park, Alberta, Canada Lethbridge, Alberta, Canada [email protected] [email protected] Mark Schwarzländer Jennifer E. Andreas Associate Professor for Entomology Integrated Weed Control Project University of Idaho, Department of Plant, Washington State University Extension Soil and Entomological Sciences Puyallup, WA Moscow, ID, USA [email protected] [email protected] For additional copies of this publication, contact: Mark Schwarzländer Richard Reardon University of Idaho USDA Forest Service PSES Department 180 Canfield Street Morgantown, WV 26505 Moscow, ID 83844 304.285.1566 208.885.9319 [email protected] [email protected] Acknowledgments Significant help in reviewing and compiling the content in this field guide was provided by Eric Coombs (Oregon Department of Agriculture), Jeffrey Littlefield (Montana State University), Dan Bean (Colorado Department of Agriculture), Robert Bourchier (Agriculture and Agri- Food Canada), and Susan Turner (British Columbia Ministry of Forests and Range). We would like to thank all of the photographers who granted permission for the use of photos. We also extend our gratitude to Denise Binion, Forest Service-Forest Health Technology Enterprise Team (FHTET) for help with editing, layout and graphics, and Richard Reardon (FHTET) for producing this guide. Field Guide Components About This Field Guide 10 Biological Control of Weeds 12 Weed Botanical Traits 14 Life Cycle 14 Duration 14 Leaf Arrangement and Margination 15 Flower heads 15 Biological Control Agent Life Cycles 16 Insects 16 Butterflies and Moths (Order Lepidoptera) 17 Beetles (Order Coleoptera) 17 Table of Contents of Table Flies (Order Diptera) 17 Aphids (Order Hemiptera) 18 Mites 18 Nematodes 18 Fungi 18 Scientific Name Changes 19 Collection Methods 20 Sweep netting 20 Aspirating 20 Hand-picking/Tapping 21 Vacuuming 21 Light trap 21 Transport Considerations 22 Containers 22 Transporting Biological Control Agents 22 Shipping long distances 22 Other factors to consider 23 Releasing Biocontrol Agents 24 Select release site 24 Establish permanent location marker 24 Record geographical coordinates at release point using GPS 24 Prepare map 24 Complete relevant paperwork at site 25 Set up photo point 25 Release as many agents as possible 25 Table of Contents of Table Monitoring Biocontrol Agents 26 Assessing biocontrol agent populations 26 Assessing the status of the target weed and co-occurring plants 27 Qualitative (descriptive) vegetation monitoring 27 Quantitative vegetation monitoring 28 Assessing impacts on nontarget plants 28 Additional Considerations 29 Avoiding Parasitism 29 Pinkish-Purple Flowers 30 Houndstongue, Cynoglossum officinale 30 Houndstongue Biological Control 32 Longitarsus quadriguttatus (Pontoppidan) 34 Mogulones crucifer (Pallas) 36 Knapweed species comparison (Centaurea) 38 Diffuse knapweed, Centaurea diffusa 40 Spotted knapweed, Centaure stoebe 42 Knapweed Biological Control 44 Agapeta zoegana 46 Bangasternus fausti 48 Chaetorellia acrolophi 50 Cyphocleonus achates 52 Larinus minutus 54 Larinus obtusus 56 Metzneria paucipunctella 58 Pelochrista medullana 60 Pterolonche inspersa 62 Sphenoptera jugoslavica 64 Terellia virens 66 Urophora affinis 68 Urophora quadrifasciata 70 Russian knapweed, Rhaponticum repens 72 Russian Knapweed Biological Control 74 Aulacidea acroptilonica 76 Jaapiella ivannikovi 78 Subanguina picridis 80 Russian Knapweed, Unapproved Agents 82 Puccinia acroptili. 82 Purple loosestrife, Lythrum salicaria 84 Purple Loosestrife Biological Control 86 Galerucella calmariensis 88 Hylobius transversovittatus 90 Table of Contents of Table Nanophyes marmoratus 92 Saltcedar, Tamarix chinensis & T. ramosissima 94 Smallflower tamarisk, Tamarix parviflora 96 Saltcedar Biological Control 98 Saltcedars, Unapproved Agents 99 Coniatus splendidulus 99 Diorhabda spp. 100 Thistle species comparison 102 Bull thistle, Cirsium vulgare 104 Canada thistle, Cirsium arvense 106 Musk thistle, Carduus nutans 108 Thistle Biological Control 110 Cheilosia grossa 112 Hadroplontus litura 114 Rhinocyllus conicus 116 Trichosirocalus horridus 118 Urophora cardui 120 Urophora stylata 122 Thistles, Non-Established Agents 124 Altica carduorum 124 Lema cyanella 124 Table of Contents of Table Psylliodes chalcomera 125 Urophora solstitialis 125 Thistles, Unapproved Agents 126 Puccinia punctiformis 126 Aceria anthocoptes 127 Cassida rubiginosa 127 Cleonis pigra 128 Larinus carlinae (=L. planus) 128 Puccinia carduorum 129 Terellia ruficauda 129 Yellow Flowers 130 Scotch broom, Cytisus scoparius 130 Broom Biological Control 132 Bruchidius villosus 134 Exapion fuscirostre 136 Leucoptera spartifoliella 138 Broom, Unapproved Agents 140 Aceria genistae 140 Agonopterix nervosa 141 Arytainilla spartiophila 141 Gorse, Ulex europaeus 142 Gorse Biological Control 144 Exapion ulicis 146 Tetranychus lintearius 148 Gorse, Unapproved Agents 150 Agonopterix nervosa 150 Orange hawkweed, Pilosella aurantiaca 152 Whiplash hawkweed, Pilosella flagellaris 154 Hawkweed Biological Control 156 Aulacidea subterminalis 158 Puncturevine, Tribulus terrestris 160 Puncturevine Biological Control 162 Microlarinus lareynii 164 Microlarinus lypriformis 166 Tansy ragwort, Jacobaea vulgaris 168 Tansy Ragwort Biological Control 170 Botanophila seneciella 172 Cochylis atricapitana 174 Longitarsus jacobaeae 176 Tyria jacobaeae 180 Tansy Ragwort, Unapproved Agents 182 Table of Contents of Table Longitarsus spp. 182 Rush skeletonweed, Chondrilla juncea 184 Rush Skeletonweed Biological Control 186 Aceria chondrillae 188 Bradyrrhoa gilveolella 190 Cystiphora schmidti 192 Puccinia chondrillina 194 Yellow starthistle, Centaurea solstitialis 196 Yellow Starthistle Biological Control 198 Bangasternus orientalis 200 Chaetorellia australis & C. succinea 202 Eustenopus villosus 204 Larinus curtus 206 Puccinia jacea var. solstitialis 208 Urophora sirunaseva 210 Common St. Johnswort, Hypericum perforatum 212 Common St. Johnswort Biological Control 214 Agrilus hyperici 216 Aphis chloris 218 Aplocera plagiata 220 Chrysolina hyperici & C. quadrigemina 222 Zeuxidiplosis giardi 224 Table of Contents of Table Dalmatian toadflax, Linaria dalmatica ssp. dalmatica 226 Yellow toadflax, Linaria vulgaris 228 Toadflax Biological Control 230 Brachypterolus pulicarius 232 Calophasia lunula 234 Mecinus janthiniformis & M. janthinus 236 Rhinusa antirrhini 238 Rhinusa linariae 240 Toadflaxes, Non-Established Agents 242 Eteobalea intermediella 242 Toadflaxes, Unapproved Agents 243 Rhinusa neta 243 Green Flowers 244 Leafy spurge, Euphorbia esula 244 Leafy Spurge Biological Control 246 Aphthona cyparissiae 248 Aphthona czwalinai 250 Aphthona flava 252 Aphthona lacertosa 254 Aphthona nigriscutis 256 Hyles euphorbiae 258 Lobesia euphorbiana 260 Oberea erythrocephala 262 Spurgia capitigena & S. esulae 264 Leafy Spurge, Non-Established Agents 266 Aphthona abdominalis 266 Chamaesphecia spp. 266 Minoa murinata 267 Pegomya curticornis & P. euphorbiae 267 White Flowers 268 Field bindweed, Convolvulus arvensis 268 Bindweed Biological Control 270 Aceria