WISCONSIN PEST BULLETIN

I N D E X 2 0 1 9 V O L U M E N O. 64 COMMON NAME SCIENTIFIC NAME PAGE NUMBER Alfalfa caterpillar Colias eurytheme 112 Alfalfa weevil Hypera postica 2, 10, 17, 18, 24, 25, 26, 36, 44, 45, 54, 62, 70, 79, 87, 153 Ambrosia beetle Xylosandrus germanus 72, 73, 156 American painted lady Venessa virginiensis 11 Apiary inspections 158 Apple insect weekly counts 7, 15, 23, 33, 42, 52, 60, 68, 77, 84, 92, 101, 110, 118, 126, 134, 142, 150 Apple maggot Rhagoletis pomonella 65, 69, 72, 85, 88, 93, 97, 105, 115, 123, 131, 139, 147, 157 Bacterial leaf spot 90, 140 Bacterial spot on pepper Xanthomonas spp. 159 Basil downy mildew Peronospora belbaharii 90, 119, 160 Bean leaf beetle Cerotoma trifurcata 27, 55, 63, 80, 88 Black cutworm Agrotis ipsilon 1, 2, 8, 9, 10, 16, 17, 18, 24, 25, 27, 30, 34, 35, 37, 39, 43, 44, 46, 49, 55, 71, 126, 154 Black light trap counts 15, 23, 33, 42, 52, 60, 68, 77, 84, 92, 101, 110, 118, 126, 134, 142, 150 Black rot Xanthomonas campestris 159 Black stem borer Xylosandrus germanus 72, 73, 156 Blossom end rot 116 Botrytis Botrytis spp. 50 Boxelder bug Boisea trivittata 144 Boxwood blight Cylindrocladium buxicola 22, 66, 152, 161 Boxwood spider mite Eurytetranychus buxi 83 Brown marmorated stink bug Halyomorpha halys 1, 3, 86, 89, 122, 135, 138, 143, 147, 152, 156 Cabbage caterpillars Pieris brassicae 75 Cabbage looper Trichoplusia ni 99, 115,124, 132 Cabbage maggot Delia radicum 5, 13 Leaf beetle Cryptocephalus schreibersii 162 Cedar-apple rust Gymnosporangium juniperi-virginianae 39 Celery leaftier Udea rubigalis 130 Chocolate vine Akebia quinata 91 Codling moth Cydia pomonella 4, 9, 17, 19, 26, 28, 35, 38, 45, 47, 53, 56, 61, 73, 80, 88, 97, 106, 114, 123, 130, 139, 147, 156 Coleosporium rust Coleosporium plumeriae 50 Colorado potato beetle Leptinotarsa decemlineata 31, 40, 50, 74, 82, 107, 124 Columbine leafminer Phytomyza aquilegivora 58 Common asparagus beetle Crioceris asparagi 4, 10, 13 Corn earworm Helicoverpa zea 37, 46, 54, 96, 99, 102, 108, 112, 113, 120, 121, 128, 129, 136, 137, 144, 145, 154 COMMON NAME SCIENTIFIC NAME PAGE NUMBER Corn leaf aphid Rhopalosiphum maidis 137 Corn rootworm Diabrotica spp. 63, 70, 71, 87, 96, 121, 127, 128, 135, 137, 143, 145, 151, 153 Corn rootworm survey Diabrotica spp. 163 Creeping Jenny Lysimachia nummularia 21 Crown rust Puccinia coronata var avenae 76 Cucumber mosaic virus Mosaic cucumovirus 83 Cucurbit downy mildew Pseudoperonospora cubensis 147, 160 Cutworms 74 Daylily leaf streak Aureobasidium microstictum 50 Defoliators 80, 88 Dogwood anthracnose Discula destructiva 59 Dogwood borer Synanthedon scitula 73 Dogwood sawfly Macremphytus tarsatus 133 Downy mildew Peronosporaceae 149 Early blight Alternaria solani 159 Eastern tent caterpillar Malacosoma americanum 2, 4, 11, 62 Elm leafminer Kaliofenusa ulmi 91 Elm sawfly Climbex americana 91 Elongate hemlock scale Fiorinia externa 40, 162 Emerald ash borer Agrilus planipennis 51, 162 Euonymus caterpillar Lepidoptera euonymus 67 European chafer Amphimallon majale 102, 162 European corn borer Ostrinia nubilalis 18, 25, 28, 35, 37, 44, 46, 53, 55, 61, 69, 71, 78, 80, 85, 87, 93, 96, 102, 104, 111, 113, 120, 121, 127, 128, 135, 137, 145, 152, 154 European corn borer survey 163 European cherry fruit fly Rhagoletis cerasi 158 European earwig Forficula auricularia 90 European red mite Panonychus ulmi 20 Eurasian hemp borer Grapholita delineana 36, 53, 94, 95, 153 Fall webworm Hyphantria cunea 100, 125 Flea beetle Chaetocnema sp. 5, 12, 49 Fletcher scale Parthenolecanium fletcheri 58 Foliar nematode Aphelenchoides sp. 140 Forest tent caterpillar Malacosoma disstria 58 Goss's wilt Clavibacter michiganensis nebraskensis 155 Granulate cutworm Feltia subterranea 71 Grape berry moth Paralobesia viteana 89 Grape diseases 158 Grape flea beetle Altica sp. 4 Grape phylloxera Daktulosphaira vitifoliae 57 Grape plume moth Geina periscelidactylus 48 Grasshopper 120, 136, 144 Green cloverworm Hypena scabra 96, 105, 122, 129 Green fruitworm Amphipyra pyramidoides 12 Grey field slug Deroseras reticulatum 67 Growing degree days tables 2, 10, 18, 26, 36, 45, 54, 62, 70, 79, 86, 94, 103, 112, 120, 128, 136, 144 Guignardia leaf blotch Fusarium sp. 108 Gymnosporangium rusts 40 COMMON NAME SCIENTIFIC NAME PAGE NUMBER Gypsy moth Lymantria dispar 2, 6, 9, 17, 76, 162 Hemp leaf spot Bipolaris sp 153 Hosta virus X 117, 162 Ilarviruses 161 Impatiens necrotic spot virus 99 Imported cabbageworm Pieris rapae 5, 30, 40, 49, 57, 66, 116 Invasive species rule 14, 21, 76 Iris potyvirus 161 Japanese beetle Popillia japonica 69, 74, 81, 86, 93, 95, 96, 97, 103, 105, 106, 112, 113, 114, 116, 119, 122, 124, 129, 132, 138, 141, 146, 155 Jumping worms Amynthas sp. 66 June beetle Phyllophaga sp. 35 Late blight Phytophthora infestans 20, 82, 85, 98, 120, 123, 131, 136, 139, 143, 147, 159 Leaf beetle Cryptocephalus schreibersii 162 Leaf mold Fulvia fulva 159 Leaf scorch 116 Lily leaf beetle Lilioceris lilii 54, 70, 76, 111, 117, 127, 152 Magnolia scale Neolecanium cornuparvum 161 Maple tar spot Rhytisma acerinum 117, 133 Meadow spittlebug Philaenus spumarius 36, 46, 62 Monarch butterlfy Danaus plexippus 45 Multicolored Asian lady beetle Harmonia axyridis 144 New EAB finds Agrilus planipennis 51, 162 Non-viable nursery stock 31 NR-40 Invasive Species Rule 14, 21, 76 Nursery inspections 160 Oak leaf blister Taphrina caerulescens 58 Oak twig pruner Anelaphus parallelus 133 Oak wilt Ceratocystis fagacearum 132 Obliquebanded leafroller Choristoneura rosaceana 20, 28, 38, 47, 56, 64, 89, 106, 130, 138 Onion maggot Hylemya antiqua 21, 30, 40, 90, 132, 140 Orange-striped oakworm Anisota senatoria 149 Oystershell scale Lepidosaphes ulmi 29 Pea aphid Macrosiphum pisi 2, 10, 18, 26, 36, 45, 55, 62, 70, 87, 94, 103, 112, 128, 136, 144 Pear sawfly Hoplocampa brevis 109 Phomopsis tip blight Phomopsis obscurans 109 Phyllosticta needlecast Phyllosticta spp 125 Pine-oak gall rust Endocronartium harknessii 148 Plant bug Lygus or Adelphocoris spp. 36, 46, 48, 54, 71, 79, 87, 94, 103, 112, 128, 136

Plant viruses 117, 161 Plum curculio Conotrachelus nenuphar 18, 19, 25, 29, 38, 47 Poison ivy gall mite Aculops rhois 91 Potato leafhopper Empoasca fabae 26, 36, 39, 45, 49, 54, 57, 62, 70, 73, 74, 79, 81, 86, 94, 98, 103, 106, 112, 120, 128, 136, 144, 152

Potyvirus 14, 31, 117, 162 Powdery mildew 141 COMMON NAME SCIENTIFIC NAME PAGE NUMBER Pseudomonas blight Pseudomonas syringae 41, 75 Purple blotch Alternaria porri 159 Purple carrot-seed moth Depressaria depressana 107 Pythium Pythium spp. 156 Rabbit damage 6 Ramorum blight Phytophthora ramorum 151, 160 Redheaded flea beetle Systena frontalis 94, 104, 108, 149 Red turnip beetle Entomoscelis americana 74 Redbanded leafroller Argyrotaenia velutinana 4, 12, 20, 29, 65 Rhizoctonia Rhizoctonia solani 14 Ribbon grass Phalaris arundinacea var. picta 75 Root rot Phytophthora spp. 32, 156 Rose chafer Macrodactylus subspinosus 56, 63, 64, 72, 79, 80, 88 Rose slug Endelomyia aethiops 67 Rosy apple aphid Aphis pomi 20 San Jose scale Quadraspidiotus perniciosus 56, 64, 73, 81, 131 Sand chafer Strigoderma arboricola 72, 88 Seed corn inspection 155 Seedcorn maggot Delia platura 4, 9, 11, 13, 20, 30 Seedling blight Syringae 159 Septoria leaf spot Septoria sp. 13, 159 Slugs 27, 46, 47, 67, 80, 88 Soybean aphid Aphis glycines 3, 28, 47, 55, 64, 70, 72, 80, 88, 96, 103, 105, 111, 113, 119, 122, 127, 129, 138, 146, 155 Soybean defoliators 72, 130 Soybean pests 38 Soybean root rot Phytophthora sojae 156 Spotted lanternfly Lycorma delicatula 162 Spotted tentiform leafminer Phyllonorycter blancardella 11, 19, 28, 38, 47, 81, 88, 97, 106, 139, 147 Spotted wing drosophila Drosophila suzukii 48, 61, 65, 69, 78, 81, 86, 93, 97, 105, 146, 157 Spring caterpillars 20 Squash bug Anasa tristis 82, 90, 98, 107, 115, 132, 140, 148 Squash vine borer Melittia satyriniformis 66, 74, 82 Stalk borer Papaipema nebris 55, 62, 63, 71, 87 Stewart's wilt Pantoea stewartii 155 Stink bug Pentatomidae 106, 114, 131 Strawberry leaf spot Mycosphaerella fragariae 157 Striped cucumber beetle Acalymma vittatum 45, 48, 57, 75, 89, 98, 107, 115 Sudden oak death Phytophthora ramorum 151, 160 Swede Midge Contarinia nasturtii 151, 158 Tar spot of maple Rhytisma sp. 117, 133 Tarnished plant bug Lygus lineolaris 10, 18, 25, 29, 39, 56 Thistle caterpillar Vanessa spp. 114 Thrips Thrips sp. 12, 39 Tobacco mosaic virus 6 Tobacco rattle virus 31, 162 Tomato hornworm Manduca sexta 89 Tomato spotted wilt virus 117 True armyworm Pseudaletia unipuncta 1, 3, 19, 28, 36, 37, 44, 46, 53, 61, 69, 71, 79, 80, 87, 113 COMMON NAME SCIENTIFIC NAME PAGE NUMBER Two-spotted spider mite Tetranychus urticae 125 Variegated cutworm Peridroma saucia 57, 82, 159 Velvet longhorned beetle Trichoferus campestris 157 Vegetable diseases 159 Viburnum leaf beetle Pyrrhalta viburni 17, 22, 124, 161 Vinyl tree guards 100 Viruses of ornamentals 161, 163 Vole damage 6 Walnut twig beetle Pityophthorus juglandis 162 Western bean cutworm Richia albicosta 61, 63, 70, 78, 79, 85, 87, 94, 95, 102, 104, 111, 112, 119, 121, 127, 129, 135, 137, 145, 154 Western conifer seed bug Leptoglossus occidentalis 144 Winter injury 5, 10 White apple leafhopper Typhlocyba pomaria 115 Whiteflies Aleyrodidae 148 White mold gall midge Karshomyia caulicola 155 White pine weevil Pissodes strobi 99 Wireworm Conoderus rudis 19, 21, 27 Wooly apple aphid Eriosoma lanigerum 48 Woodland forget-me-not Myosotis sylvaticum 14 Yellowheaded spruce sawfly Pikonema alaskensis 108 Zebra caterpillar Melanchra picta 65

Wisconsin Pest Bulletin 2019 Volume No. 64  Department of Agriculture, Trade and Consumer Protection