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	Top pest group	Species in top category	Species listed as important from other categories
Acer	Bark suckers	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, Lecanium nigrofasciatum; calico scale, Eulecanium cerasorum; Lecanium spp.	Flatheaded appletree borer, Chrysobothris femorata; Japanese beetles, Popillia japonica; green-striped mapleworm, Anisota rubicunda; spring cankerworm, Paleacrata vernata; fall cankerworm, Alsophila pometaria; ambrosia beetles.
Fraxinus	Borers	Emerald ash borer, Agrilus planipennis (9); clearwing borers, Podosesia spp.
Lagerstroemia	Leaf suckers	Crape myrtle aphid, Tinocallis kahawaluokalani (8).	Crape myrtle bark scale, Acanthococcus lager-stroemiae; Japanese beetle, Popillia japonica; ambrosia beetles; Sri Lanka weevil, Myllocerus undecimpustulatus undatus.
Liquidambar	Defoliators	Fall webworms, Hyphantria cunea (3).	Camphor shot borer, Cnestus mutilatus; ambrosia beetles.
Liriodendron	Leaf suckers	Tulip tree aphid, Illinoia liriodendri (9).	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.	Pine needle scale, Chionaspis pinifoliae; Nantucket pine tip moth, Rhyacionia frustrana; redheaded pine sawfly, Neodiprion lecontei; pine bark adelgid, Pineus strobi; pine sawyer, Monochamus scutellatus; longhorned beetles.
Platanus	Leaf suckers	Sycamore lace bug, Corythucha ciliata (11).
Prunus	Defoliators	Eastern tent caterpillar, Malacosoma americanum (5); Japanese beetle, Popillia japonica; spring cankerworm, Paleacrata vernata; fall cankerworm, Alsophila pometaria.	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.
Pyrus	Defoliators and borers	Defoliators: cankerworms (2); spring cankerworm, Paleacrata vernata; fall cankerworm, Alsophila pometaria. Borers: ambrosia beetles (3); flatheaded appletree borer, Chrysobothris femorata; clearwing borers.	Spider mites; psyllids, aphids; pearleaf blister mite, Phytoptus pyri.
Quercus	Defoliators and stem/leaf gallers	Defoliators: orangestriped oakworm, Anisota senatoria (3); pink-striped oakworm, Anisota virginiensis; spring cankerworm, Paleacrata vernata; fall cankerworm, Alsophila pometaria; yellownecked caterpillar, Datana ministra Stem/Leaf gallers: horned oak gall, Callirhytis cornigera (3); gouty oak gall, Callirhytis quercuspunctata (3); jumping oak gall, Neuroterus saltatorius; oak apple gall.	Lecanium scale, Parthenolecanium spp. (5); oak lecanium scale, Parthenolecanium quercifex; obscure scale, Melanaspis obscura; oak erriococcid, Eriococcus quercus; Kermes scale, Allokermes kingii; twig girdler, Oncideres cingulata; oak leaf itch mite, Pyemotes herfsi; flatheaded appletree borer, Chrysobothris femorata; two-lined chestnut borer, Agrilus bilineatus.
Ulmus	Defoliators	Elm leaf beetle, Xanthogaleruca luteola (4).	Native elm bark beetle, Hylurgopinus rupes; smaller European elm bark beetle, Scolytus multistriatus; banded elm bark beetle, S. schevyrewi; Japanese maple scale, Lopholeucaspis japonica; calico scale, Eulecanium cerasorum; Parthenolecanium spp.; elm cocks comb gall, Colopha ulmicola; elm sack gall, Tetraneura ulmi; plant hoppers.
Zelkova	Bark suckers & Borers	Bark suckers: Japanese maple scale, Lopholeucaspis japonica (2); calico scale, Eulecanium cerasorum (2). Borers: native elm bark beetle, Hylurgopinus rupes (1); smaller European elm bark beetle, Scolytus multistriatus (1); ambrosia beetles (1).