| acorn and nut weevils |
Curculio spp. |
1 |
| acorn-plum gall |
Amphibolips quercusjuglans |
2 |
| Allegheny mound ant |
Formica exsectoides |
2 |
| alternateleaf dogwood |
Cornus alternifolia |
2 |
| American aspen beetle |
Gonioctena americana |
1 |
| American basswood |
Tilia americana |
3 |
| American beaver |
Castor canadensis |
4 |
| American robin |
Turdus migratorius |
1 |
| Armillaria root rots |
Armillaria spp. |
2 |
| ash and privet borer |
Tylonotus bimaculatus |
2 |
| ash borer |
Podosesia syringae |
3 |
| ash flower gall mite |
Eriophyes fraxiniflora |
4 |
| ash heart rot |
Perenniporia fraxinophila |
7 |
| ash plant bug |
Tropidosteptes amoenus |
1 |
| Asian longhorned beetle |
Anoplophora glabripennis |
6 |
| aspen blotchminer |
Phyllonorycter apparella |
7 |
| aspen leafminer |
Phyllocnistis populiella |
1 |
| bald eagle |
Haliaeetus leucocephalus |
2 |
| baldfaced hornet |
Dolichovespula maculata |
2 |
| balsam fir |
Abies balsamea |
2 |
| balsam gall midge |
Paradiplosis tumifex |
1 |
| balsam twig aphid |
Mindarus abietinus |
5 |
| barred owl |
Strix varia |
1 |
| basswood leafroller |
Pantographa limata |
1 |
| basswood thrips |
Neohydatothrips tiliae |
1 |
| beech scale |
Cryptococcus fagisuga |
3 |
| birch leafminer |
Fenusa pusilla |
5 |
| black ash decline |
|
3 |
| black pineleaf scale |
Dynaspidiotus californica |
3 |
| black root rot |
Xylaria polymorpha |
3 |
| black spruce |
Picea mariana |
2 |
| black swallowtail |
Papilio polyxenes |
1 |
| black willow |
Salix nigra |
2 |
| blackheaded ash sawfly |
Tethida barda |
3 |
| bloodroot |
Sanguinaria canadensis |
9 |
| blue spruce |
Picea pungens |
2 |
| bluebead-lily |
Clintonia borealis |
2 |
| boreal owl |
Aegolius funereus |
3 |
| bottomland hardwoods |
|
1 |
| boxelder bug |
Boisea trivittata |
4 |
| bronze birch borer |
Agrilus anxius |
8 |
| bronze poplar borer |
Agrilus liragus |
1 |
| burl and decay |
|
3 |
| butterfly milkweed |
Asclepias tuberosa |
2 |
| butternut |
Juglans cinerea |
4 |
| butternut woolyworm |
Eriocampa juglandis |
1 |
| canker rot |
Phellinus everhartii |
1 |
| carpenter ants |
Camponotus spp. |
3 |
| cecropia moth |
Hyalophora cecropia |
2 |
| chainspotted geometer |
Cingilia catenaria |
1 |
| cherry scallop shell moth |
Rheumaptera prunivorata |
1 |
| clinker polypore |
Inonotus obliquus |
2 |
| closed bottle gentian |
Gentiana andrewsii |
2 |
| common hackberry |
Celtis occidentalis |
2 |
| common milkweed |
Asclepias syriaca |
3 |
| common snapping turtle |
Chelydra serpentina |
1 |
| cone beetles |
Conophthorus spp. |
1 |
| cone midge |
Resseliella spp. |
4 |
| cone resin midge |
Asynapta hopkinsi |
1 |
| conifer sawfly |
Gilpinia frutetorum |
4 |
| cooley spruce gall adelgid |
Adelges cooleyi |
1 |
| currant |
Ribes spp. |
1 |
| desication (wind burn) |
|
1 |
| Diplodia tip blights |
Diplodia spp. |
3 |
| dogwood sawfly |
Macremphytus tarsatus |
1 |
| dragonflies and damselflies |
|
1 |
| drought |
|
2 |
| Dutch elm disease |
Ophiostoma ulmi |
2 |
| eastern arborvitae |
Thuja occidentalis |
4 |
| eastern ash bark beetle |
Hylesinus aculeatus |
3 |
| eastern chipmunk |
Tamias striatus |
2 |
| eastern cottontail |
Sylvilagus floridanus |
3 |
| eastern dwarf mistletoe |
Arceuthobium pusillum |
4 |
| eastern gray squirrel |
Sciurus carolinensis |
10 |
| eastern hemlock |
Tsuga canadensis |
1 |
| eastern larch beetle |
Dendroctonus simplex |
2 |
| eastern pine gall rust |
Cronartium quercuum |
5 |
| eastern pine seedworm |
Cydia toreuta |
5 |
| eastern spruce gall adelgid |
Adelges abietis |
2 |
| eastern tent caterpillar |
Malacosoma americanum |
3 |
| eastern tiger swallowtail |
Papilio glaucus |
6 |
| eastern white pine |
Pinus strobus |
14 |
| elder borer |
Desmocerus palliatus |
1 |
| elm leafminer |
Kaliofenusa ulmi |
2 |
| elm sawfly |
Cimbex americana |
4 |
| emerald ash borer |
Agrilus planipennis |
9 |
| entomophagus fungi |
Entomophaga maimaiga |
7 |
| Eriophyid mite |
|
1 |
| Eriophyid mites |
Eriophyes spp. |
2 |
| European buckthorn |
Rhamnus cathartica |
4 |
| European pine sawfly |
Neodiprion sertifer |
14 |
| Eutypella canker |
Eutypella parasitica |
2 |
| fall webworm |
Hyphantria cunea |
5 |
| fir broom rust |
Melampsorella caryophyllacearum |
1 |
| fire |
|
5 |
| fletcher scale |
Parthenolecanium fletcheri |
2 |
| flower spider |
Misumena vatia |
1 |
| fly agaric |
Amanita muscaria |
1 |
| forest tent caterpillar |
Malacosoma disstria |
24 |
| frost and winter injury (general) |
|
3 |
| galls |
|
2 |
| garlic mustard |
Alliaria petiolata |
22 |
| Giant ichneumon wasp |
Megarhyssa spp. |
2 |
| gilled polypore |
Lenzites betulina |
1 |
| goldsmith beetle |
Cotalpa lanigera |
2 |
| gray tree frog |
Hyla versicolor |
3 |
| great blue heron |
Ardea herodias |
5 |
| greater fringed gentian |
Gentianopsis crinita |
2 |
| green ash |
Fraxinus pennsylvanica |
4 |
| greenstriped mapleworm |
Dryocampa rubicunda |
1 |
| gypsy moth |
Lymantria dispar |
11 |
| hackberry nipplegall maker |
Pachypsylla celtidismamma |
3 |
| hail |
|
4 |
| hemlock borer |
Phaenops fulvoguttata |
2 |
| hemlock borer |
Phaenops fulvoguttata |
6 |
| hemlock varnish shelf |
Ganoderma tsugae |
1 |
| Hericium fungus |
Hericium coralloides |
2 |
| hophornbeam |
Ostrya virginiana |
1 |
| human caused injury |
|
1 |
| hummingbird clearwing |
Hemaris thysbe |
1 |
| illegal dumping |
|
2 |
| ink spot leaf blight |
Ciborinia whetzelii |
3 |
| introduced basswood thrips |
Thrips calcaratus |
1 |
| introduced pine sawfly |
Diprion similis |
11 |
| io moth |
Automeris io io |
2 |
| Ips engraver beetles |
Ips spp. |
1 |
| jack pine |
Pinus banksiana |
2 |
| jack pine budworm |
Choristoneura pinus pinus |
4 |
| Japanese beetle |
Popillia japonica |
13 |
| lakes and ponds |
|
3 |
| larch sawfly |
Pristiphora erichsonii |
7 |
| large aspen tortrix |
Choristoneura conflictana |
6 |
| leafcurl ash aphid |
Meliarhizophagus fraxinifolii |
1 |
| leaffooted pine seed bug |
Leptoglossus corculus |
1 |
| leafhopper |
Typhlocyba albicans |
2 |
| leafminer flies |
|
1 |
| linden looper |
Erannis tiliaria |
6 |
| locust leafminer |
Odontota dorsalis |
2 |
| long-horned beetles |
|
1 |
| May-June beetles |
Phyllophaga spp. |
18 |
| meadowhawks |
Sympetrum spp. |
1 |
| mechanical |
|
1 |
| metalic wood-boring beetles |
Dicerca spp. |
1 |
| metalic wood-boring beetless |
Chalcophora spp. |
2 |
| monarch butterfly |
Danaus plexippus |
3 |
| mountain pine beetle |
Dendroctonus ponderosae |
1 |
| mountain-ash sawfly |
Pristiphora geniculata |
1 |
| mourning cloak butterfly |
Nymphalis antiopa |
5 |
| multicolored Asian lady beetle |
Harmonia axyridis |
2 |
| native elm bark beetle |
Hylurgopinus rufipes |
1 |
| net-winged beetles |
Calopteron spp. |
1 |
| Noctuid moth |
Acronicta lanceolaria |
2 |
| northeastern sawyer |
Monochamus notatus |
2 |
| northern hardwoods |
|
4 |
| northern red oak |
Quercus rubra |
1 |
| nuclear polyhedrosis virus |
Nucleopolyhedrovirus |
2 |
| oak apple gall |
Amphibolips spp. |
4 |
| oak bullet gall |
Disholcaspis quercusglobulus |
2 |
| oak shothole leafminer |
Agromyza viridula |
1 |
| oak tatters |
|
2 |
| oak webworm |
Archips fervidana |
2 |
| oak wilt |
Ceratocystis fagacearum |
1 |
| ocellate gall midge |
Acericecis ocellaris |
1 |
| orangestriped oakworm |
Anisota senatoria |
1 |
| pale green weevil |
Polydrusus impressifrons |
1 |
| Pandora sphinx |
Eumorpha pandorus |
1 |
| paper birch |
Betula papyrifera |
1 |
| partridgeberry |
Mitchella repens |
2 |
| pecan leaf casebearer |
Acrobasis juglandis |
1 |
| perennial lupine |
Lupinus perennis |
4 |
| pig (domestic) |
Sus scrofa (domestic type) |
3 |
| pigeon tremex |
Tremex columba |
2 |
| pileated woodpecker |
Dryocopus pileatus |
2 |
| pine bark adelgid |
Pineus strobi |
6 |
| pine engraver |
Ips pini |
6 |
| pine false webworm |
Acantholyda erythrocephala |
2 |
| pine gall weevil |
Podapion gallicola |
2 |
| pine root collar weevil |
Hylobius radicis |
3 |
| pine spittlebug |
Aphrophora cribrata |
1 |
| pine tip root weevil |
Hylobius rhizophagus |
1 |
| pine webworm |
Pococera robustella |
2 |
| pink lady's-slipper |
Cypripedium acaule |
2 |
| polyphemus moth |
Antheraea polyphemus |
2 |
| poplar borer |
Saperda calcarata |
1 |
| poplar rust |
Melampsora medusae |
1 |
| poplar twiggall fly |
Hexomyza schineri |
1 |
| poplar-and-willow borer |
Cryptorhynchus lapathi |
1 |
| porcupine |
Erethizon dorsatum |
1 |
| post oak grasshopper |
Dendrotettix quercus |
3 |
| prescribed fire |
|
1 |
| pruning (general) |
|
1 |
| purple loosestrife |
Lythrum salicaria |
1 |
| quaking aspen |
Populus tremuloides |
25 |
| red admiral |
Vanessa atalanta |
1 |
| red maple |
Acer rubrum |
2 |
| red pine |
Pinus resinosa |
23 |
| red pine cone beetle |
Conophthorus resinosae |
3 |
| red pine cone beetle |
Conophthorus resinosae |
2 |
| red pine cone borer |
Eucosma monitorana |
5 |
| red pine shoot moth |
Dioryctria resinosella |
11 |
| red turpentine beetle |
Dendroctonus valens |
2 |
| red-belted fungus |
Fomitopsis pinicola |
3 |
| redheaded pine sawfly |
Neodiprion lecontei |
5 |
| redosier dogwood |
Cornus sericea |
1 |
| river birch |
Betula nigra |
5 |
| rivers and streams |
|
1 |
| robber flies |
|
2 |
| rodents |
|
1 |
| round-lobe hepatica |
Anemone americana |
3 |
| Saratoga spittlebug |
Aphrophora saratogensis |
2 |
| sawflies |
Caliroa spp. |
7 |
| scarlet elfcup |
Sarcoscypha austriaca |
3 |
| Scleroderris canker of pine and spruce |
Gremmeniella abietina |
2 |
| Scots pine |
Pinus sylvestris |
2 |
| shelterwood |
|
1 |
| silver maple |
Acer saccharinum |
13 |
| Sirococcus blight of conifers |
Sirococcus conigenus |
2 |
| smooth patch of oak |
Aleurodiscus oakesii |
5 |
| snout beetles or weevils |
|
1 |
| snow and ice damage (snow load) |
|
4 |
| spiny looper |
Phigalia titea |
2 |
| spotted joe pye weed |
Eutrochium maculatum |
1 |
| spotted knapweed |
Centaurea stoebe |
3 |
| spruce bud scale |
Physokermes piceae |
2 |
| spruce budworm |
Choristoneura fumiferana |
1 |
| spruce decline |
|
2 |
| spruce gall midge |
Mayetiola piceae |
2 |
| spruce needleminer |
Taniva albolineana |
4 |
| star-flower |
Trientalis borealis |
3 |
| stink bugs |
|
2 |
| sugar maple borer |
Glycobius speciosus |
3 |
| sulfur shelf |
Laetiporus sulphureus |
1 |
| sunrise |
|
1 |
| sunsets |
|
2 |
| sweet joepyeweed |
Eupatorium purpureum |
1 |
| sweetfern |
Comptonia peregrina |
1 |
| syrphid or flower flies |
|
3 |
| tamarack |
Larix laricina |
5 |
| Taphrina flower fungus |
Taphrina johansonii |
1 |
| tar spot |
Rhytisma americanum |
2 |
| turk's-cap lily |
Lilium superbum |
2 |
| two-spotted lady beetle |
Adalia bipunctata |
2 |
| twolined chestnut borer |
Agrilus bilineatus |
3 |
| walnut shoot moth |
Acrobasis demotella |
1 |
| webbing coneworm |
Dioryctria disclusa |
6 |
| weevil |
Polydrusus spp. |
3 |
| western conifer-seed bug |
Leptoglossus occidentalis |
2 |
| white heartwood rot |
Phellinus tremulae |
1 |
| white pine blister rust |
Cronartium ribicola |
7 |
| white pine cone beetle |
Conophthorus coniperda |
2 |
| white pine cone borer |
Eucosma tocullionana |
3 |
| white pine weevil |
Pissodes strobi |
18 |
| white spruce |
Picea glauca |
1 |
| white trillium |
Trillium grandiflorum |
3 |
| white trout lily |
Erythronium albidum |
2 |
| white-horned horntail |
Urocerus albicornis |
1 |
| white-lined sphinx |
Hyles lineata |
2 |
| wind |
|
5 |
| woodpeckers |
|
3 |
| woolly apple aphid |
Eriosoma lanigerum |
1 |
| woolly elm aphid |
Eriosoma americanum |
4 |
| yellow birch |
Betula alleghaniensis |
2 |
| yellow cap fungi |
Pholiota spp. |
4 |
| yellow marsh marigold |
Caltha palustris |
6 |
| yellow trout lily |
Erythronium americanum |
5 |
| yellow-bellied sapsucker |
Sphyrapicus varius |
2 |
| yellowheaded spruce sawfly |
Pikonema alaskensis |
1 |
| Zimmerman pine moth |
Dioryctria zimmermani |
1 |
