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Image Subject Name Scientific Name Description
1238036 fig/banyan Ficus spp. Aerial "prop roots" Southwestern Florida
5476357 Callery pear (Bradford pear) Pyrus calleryana thorn
5474098 pawpaw Asimina triloba Asimina triloba (pawpaw) - rusty tomentose on newly emerged leaf petiole
5474097 pawpaw Asimina triloba Asimina triloba (pawpaw) - rusty tomentose on newly emerged leaf petiole
5468515 honeylocust Gleditsia triacanthos honey locust, Gleditsia triacanthos thorn
1581092 hazel alder Alnus serrulata
5458623 blade spruce Gall adelgid Adelges laricis Waxy secretion on larch needles.
5458595 oak bullet gall Disholcaspis quercusglobulus Oak bullet galls caused by cynipid wasps.
5458338 ash flower gall mite Eriophyes fraxiniflora Ash flower gall mite damage(distorted male flowers which have turned brown) as it appeared in August.
5458325 walnut twig beetle Pityophthorus juglandis Entrance and exit holes of the walnut twig beetle on black walnut.
5445636 blue ash Fraxinus quadrangulata blue ash (Fraxinus quadrangulata)
5445649 yellow buckeye Aesculus flava yellow buckeye (Aesculus flava)
5445796 pawpaw Asimina triloba pawpaw (Asimina triloba)
5445797 pawpaw Asimina triloba pawpaw (Asimina triloba)
2187054 longtailed mealybug Pseudococcus longispinus honeydew on leaf with longtailed mealybug
2187057 spider mites abundant webbing
2721028 granulate ambrosia beetle Xylosandrus crassiusculus
5388302 fragrant sumac Rhus aromatica New buds on fragrant sumac.
5388304 black locust Robinia pseudoacacia Thorns on a black locust.
5434164 winged elm Ulmus alata Winged branches
5434165 winged elm Ulmus alata Winged branches
5434166 winged elm Ulmus alata Winged branches
5434167 winged elm Ulmus alata Wide variability of 'wings' on branches
5434170 winged elm Ulmus alata Winged branches
5434171 winged elm Ulmus alata Winged branches
5433956 hawthorn Crataegus spp. Spring; thorns; buds
5433960 hawthorn Crataegus spp. thorns
2187056 longtailed mealybug Pseudococcus longispinus spots of honeydew on leaf
0008407 osage-orange Maclura pomifera thorns on twig
0590044 smooth patch of oak Aleurodiscus oakesii and etched appearance of bark
1223155 tree spade planting hole
0008486 alternateleaf dogwood Cornus alternifolia Leaf scars and buds
2721027 granulate ambrosia beetle Xylosandrus crassiusculus
1540919 pine spittlebug Aphrophora parallela catskin
1540920 pine spittlebug Aphrophora parallela catskin
1540921 pine spittlebug Aphrophora parallela catskin
5388242 honeylocust Gleditsia triacanthos Honey locusts have pointed thorns.
5423067 white fringetree Chionanthus virginicus Petioles are red at the base
5423069 white fringetree Chionanthus virginicus Flowers emerge from leaf axils
5422213 western drywood termite Incisitermes minor frass
5422216 western drywood termite Incisitermes minor frass
5422214 western drywood termite Incisitermes minor frass
5045012 bur oak Quercus macrocarpa Large horizontal branch development in bur oak
5078064 wool sower gall maker Callirhytis seminator insect gall
5393596 bronze birch borer Agrilus anxius Exit hole in bark
5392784 Asian longhorned beetle Anoplophora glabripennis pupal chamber frass
5392747 Asian longhorned beetle Anoplophora glabripennis Egg sites and Exit holes
5392749 Asian longhorned beetle Anoplophora glabripennis Egg sites and Exit holes
5392750 Asian longhorned beetle Anoplophora glabripennis Egg sites and Exit holes
5392751 Asian longhorned beetle Anoplophora glabripennis Egg sites and Exit holes
5392752 Asian longhorned beetle Anoplophora glabripennis Egg sites and Exit holes
5392753 Asian longhorned beetle Anoplophora glabripennis Egg sites and Exit holes
5392754 Asian longhorned beetle Anoplophora glabripennis Egg sites and Exit holes
5392755 Asian longhorned beetle Anoplophora glabripennis Egg sites and Gallery
5392756 Asian longhorned beetle Anoplophora glabripennis Egg sites
5392757 Asian longhorned beetle Anoplophora glabripennis Egg sites
5392758 Asian longhorned beetle Anoplophora glabripennis bark removed showing frass
5392759 Asian longhorned beetle Anoplophora glabripennis frass
5392761 Asian longhorned beetle Anoplophora glabripennis egg and exit sites
5392762 Asian longhorned beetle Anoplophora glabripennis egg and exit sites
5392763 Asian longhorned beetle Anoplophora glabripennis egg and exit sites
5392764 Asian longhorned beetle Anoplophora glabripennis egg and exit sites
5392765 Asian longhorned beetle Anoplophora glabripennis egg and exit sites
5392766 Asian longhorned beetle Anoplophora glabripennis egg and exit sites
5392768 Asian longhorned beetle Anoplophora glabripennis egg sites
5392769 Asian longhorned beetle Anoplophora glabripennis egg and exit sites
5392771 Asian longhorned beetle Anoplophora glabripennis egg and exit sites
5392772 Asian longhorned beetle Anoplophora glabripennis egg and exit sites; bark removed
5392773 Asian longhorned beetle Anoplophora glabripennis egg and exit sites
5386047 palm moth Paysandisia archon Presence of sawdust on the palm trunk
5386048 palm moth Paysandisia archon pupal exuviae on  
5389253 tent caterpillar Eriogaster lanestris tent on tree
5389262 tent caterpillar Eriogaster lanestris
5334079 gouty oak gall Callirhytis quercuspunctata Wasp Gall
5371063 knopper gall Andricus quercuscalicis asexual gall
5371047 Acantholyda sawflies Acantholyda spp. frass
5371372 blade spruce Gall adelgid Adelges laricis
2109022 oak galls Fuzzy insect galls on the leaves of post oak.  They are common on post oak in East Texas.
5345056 Callery pear (Bradford pear) Pyrus calleryana tree splitting
0656062 oriental beetle Anomala orientalis Last ventral segment of Blitopertha orientalis larva, showing longitudinal rows of spines and characteristic transverse anal opening. Raster pattern.  Black and white image
5371247 browntail moth Euproctis chrysorrhoea overwintering nest
5369696 magnolia scale Neolecanium cornuparvum Drop of honeydew being exuded from adult scale
5304002 European elm scale Gossyparia spuria Sooty mold characteristic of chronic infestation by European elm scale in sites with little rainfall.
5304003 European elm scale Gossyparia spuria Sooty mold characteristic of chronic infestation by European elm scale in sites with little rainfall.
5304029 fall webworm Hyphantria cunea Frass collected at base of tent
5032094 white ash Fraxinus americana winter buds
5211002 ash borer Podosesia syringae Infested ash trunk with pupal skins extruding from exit wounds
1501040 oak wilt Ceratocystis fagacearum Oak wilt may move through root grafts between trees similar to this live oak root grafting
1484007 fall webworm Hyphantria cunea webbing with defoliation; webbed foliage
1397115 pruning (general) Proper pruning cut on small branch.
1397136 pruning (general) proper cut
5171030 bronze birch borer Agrilus anxius callus formation in response to feeding of the larvae in the cambium region creates noticable ridges
5171036 emerald ash borer Agrilus planipennis root sprouts and crown dieback are typical indicatiors of an infested tree
5171037 emerald ash borer Agrilus planipennis root sprouts and crown dieback are typical indicatiors of an infested tree
5170017 English oak Quercus robur A very strange, unexplained stem!! Forest of Dean, Gloucestershire, England, UK. Not the result of a super long tree shelter! Root collar instability and total loss of apical dominance in early years may explain it? The crown was a stunted "lollipop" shape.
2514020 eastern tent caterpillar Malacosoma americanum Tent Caterpillars 'nest'. Sycamore, GA 7 April 1968
5110056 Phytophthora kernoviae Phytophthora kernoviae P. kernoviae sporangium.
5110057 Phytophthora kernoviae Phytophthora kernoviae Scanning electron micrograph, P.kernoviae sporangia
2182058 basswood thrips Neohydatothrips tiliae antennae
2184046 eastern tent caterpillar Malacosoma americanum 'tent'
5026013 smaller European elm bark beetle Scolytus multistriatus emergence hole
2721034 fall webworm Hyphantria cunea web on pecan
2187055 longtailed mealybug Pseudococcus longispinus honeydew on leaf
1468060 mountain pine beetle Dendroctonus ponderosae pitch tubes
1458055 Dutch elm disease Ophiostoma ulmi streaking of vascular tissue
1457030 emerald ash borer Agrilus planipennis Bark removed by woodpeckers searching for emerald ash borer larvae and pupae in late winter, early spring. Photo taken in Ann Arbor, MI, 2004.
1238034 fig/banyan Ficus spp. Southwestern Florida
1626007 aphids Aphids excrete a sugary waste produce called honeydew. Notice the clear drop on the left side of this picture. Ants, bees, and wasps collect honeydew for food. Black and brown fungi, appropriately called sooty molds, cover leaves and other objects below aphid colonies where honeydew collects.
1254052 European elm scale Eriococcus spuria Black sooty mold growing on honeydew deposited by scale infestations, Colorado State University campus, Fort Collins, CO.
1238039 Florida strangler fig Ficus aurea
1238041 Florida strangler fig Ficus aurea
1238042 Florida strangler fig Ficus aurea
1238050 resurrection fern Pleopeltis polypodioides Charleston, SC
1238051 resurrection fern Pleopeltis polypodioides Charleston, SC
1238092 human caused injury Typical builder's onsite fire. Grenville, SC
1238175 snow and ice damage (snow load) Ice accumulates on foliage, causing branches to sag. Simpsonville, SC.
4825026 resurrection fern Pleopeltis polypodioides An epiphyte using tree branches for support.
1435133 wax scales Ceroplastes spp.
1435066 bagworm Thyridopteryx ephemeraeformis
2089040 fall webworm Hyphantria cunea on pecan
2666047 pecan spittlebug Clastoptera achatina spittle mass at base of nut cluster
2666050 yellow pecan aphid Monelliopsis pecanis honeydew
0008487 redosier dogwood Cornus sericea Leaf scars and buds
0008485 alternateleaf dogwood Cornus alternifolia Leaf scars and buds
4825033 devil's gut Cassytha filiformis close-up vine
4822052 mistletoes Phoradendron spp. Globose clumps established in tree crown as seen in winter.
4823020 Armillaria root rots Armillaria spp. An unknown A. spp. exhibiting rarely formed rhizomorphs.
4825023 lichen Foliose or leafy form (Parmelia spp.), and fruticose or shrubby form (Usnea spp.) on bark.
3046076 sycamore dieback healthy cambium compare to image 3046074
4214001 oak wilt Ceratocystis fagacearum close-up view of fungal mat on peeled stem
3226028 oak wilt Ceratocystis fagacearum root grafts
3227018 oak wilt Ceratocystis fagacearum root grafts

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