158 Frank: Survey of Street Tree Pests Table 2. Top pest categories for each genus and key pest species within those categories. Top pest category reflects the category with the highest value in Table 1. If equal values appeared in Table 1, both pest categories and associated species are presented. The most commonly identified pest species appears first followed by the number of times it was listed in parentheses. Important pests listed by respondents who selected a different top category are listed in the final column. Genus Acer Top pest group Bark suckers Species in top category Gloomy scale, Melanaspis tenebricosa (7); Japanese maple scale, Lopholeucaspis japonica; obscure scale, Melanaspis obscura; white peach scale, Pseudaulacaspis pentagon; oyster shell scale, Lepidosaphes ulmi; cottony maple scale, Pulvinaria innumerabilis; cottony maple leaf scale, Pulvinaria acericola; terrapin scale, Leca- nium nigrofasciatum; calico scale, Euleca- nium cerasorum; Lecanium spp. Fraxinus Lagerstroemia Borers Leaf suckers Emerald ash borer, Agrilus planipennis (9); clearwing borers, Podosesia spp. Crape myrtle aphid, Tinocallis kahawaluo- kalani (8). Liquidambar Liriodendron Defoliators Leaf suckers Fall webworms, Hyphantria cunea (3). Tulip tree aphid, Illinoia liriodendri (9). Crape myrtle bark scale, Acanthococcus lager- stroemiae; Japanese beetle, Popillia japonica; ambrosia beetles; Sri Lanka weevil, Myllocerus undecimpustulatus undatus. Camphor shot borer, Cnestus mutilatus; ambrosia beetles. Tulip tree scale, Toumeyella liriodendri; yellow poplar weevil, Odontopus calceatus; root collar borer, Euzophera ostricolorella; American plum borer, Euzophera semifuneralis. Pinus Borers Bark beetles (8); Southern pine beetle, Dendroctonus frontalis; black turpentine beetle, Dendroctonus terebrans; Ips spp. Platanus Prunus Leaf suckers Defoliators Sycamore lace bug, Corythucha ciliata (11). Eastern tent caterpillar, Malacosoma americanum (5); Japanese beetle, Popillia japonica; spring cankerworm, Paleacrata vernata; fall cankerworm, Alsophila pometaria. Pyrus Defoliators and borers Defoliators: cankerworms (2); spring can- kerworm, Paleacrata vernata; fall canker- worm, Alsophila pometaria. Borers: ambrosia beetles (3); flatheaded appletree borer, Chrysobothris femorata; clearwing borers. Flatheaded appletree borer, Chrysobothris femorata; peachtree borer, Synanthedon exitiosa; lesser peachtree borer, Synanthedon pictipes; white peach scale, Pseudaulacaspis pentagon; oyster shell scale, Lepidosaphes ulmi; San Jose scale, Quadraspidiotus perniciosus; ambrosia beetles. Spider mites; psyllids, aphids; pearleaf blister mite, Phytoptus pyri. Pine needle scale, Chionaspis pinifoliae; Nantucket pine tip moth, Rhyacionia frustrana; redheaded pine sawfly, Neodiprion lecontei; pine bark adelgid, Pineus strobi; pine sawyer, Monochamus scutel- latus; longhorned beetles. Species listed as important from other categories Flatheaded appletree borer, Chrysobothris femorata; Japanese beetles, Popillia japonica; green-striped mapleworm, Anisota rubicunda; spring cankerworm, Paleacrata vernata; fall cankerworm, Alsophila pometaria; ambrosia beetles. ©2019 International Society of Arboriculture
September 2019
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