Narrow Results by:

Subject Specific Filters:

Type:

  1. Category:             (show all)

  1. Order:                   (show all)

Image Specific Filters:

  1. Descriptor:           (show all)

  1. Commodity:         (show all)

Gender:

Image Setting:

  1. View:                     (show all)

Person in Image:

  1. Country:                

  1. Author:                  (show all)

Sizes Available:

Orientation:

Cornell University
Once called "the first American university" by educational historian Frederick Rudolph, Cornell University represents a distinctive mix of eminent scholarship and democratic ideals. Adding practical subjects to the classics and admitting qualified students regardless of nationality, race, social circumstance, gender, or religion was quite a departure when Cornell was founded in 1865. Read more…

525 Images of 196 Subjects View Subject List View Image Details View Thumbnails

first prev Page: next last Display:

Image Subject Name Scientific Name Description
5492329 pine wilt nematode Bursaphelenchus xylophilus Posterior region of pine wood (pine wilt) nematode adult male
5492330 Ploioderma fungi Ploioderma spp. Appearance of immature fruiting bodies as observed on needles in spring
5492332 Ploioderma fungi Ploioderma spp. Immature Ploioderma fruiting bodies appearing as thin black lines on the needle surface; as fruiting bodies mature and swell, the needle epidermis will split along these lines.
5457956 Camarosporium fungi Camarosporium spp. Spores
5492324 oak wilt Ceratocystis fagacearum Dark streaking on wood of oak branch
5492325 oak wilt Ceratocystis fagacearum Endoconidia and conidia of Ceratocystis fagacearum from culture
5492326 oak wilt Ceratocystis fagacearum Appearance of Ceratocystis fagacearum grown on acidified potato dextrose agar (APDA) at 18 degrees C. (at 3-4 weeks)
5492322 Rhizosphaera needle cast Rhizosphaera spp. Fruiting bodies developing from stomates on a spruce needle
5492327 Phytophthora blight Phytophthora capsici Phytophthora capsici infection of ripe zucchini fruit
5492323 leaf spot of maize Bipolaris zeicola NCLS spores developing from a lesion on a leaf
5492328 pine wilt nematode Bursaphelenchus xylophilus Posterior region of pine wood (pine wilt) nematode adult male
5492317 Cytospora cankers Cytospora spp. yellow tendrils of conidia oozing from pycnidial stromata of a Cytospora sp. developing in an infected spruce branch
5492314 Cytospora cankers Cytospora spp. Cytospora/spruce canker: cross section of Cytospora pycnidial stroma
5492315 Cytospora cankers Cytospora spp. The tip of a pycnidial stroma just visible breaking through the bark on a spruce branch with Cytospora canker
5492318 early blight Alternaria solani External and internal view of Early Blight lesions; note symptoms within this tuber are shallow.
5492319 early blight Alternaria solani Large lesion on tuber infected with Early Blight pathogen Alternaria solani
5492320 early blight Alternaria solani Shallow symptoms in potato tuber flesh where skin cut away from lesion of tuber infected with Alternaria solani
5492313 rust Pucciniastrum americanum Rust pustules developing on yellow raspberry fruit
5492303 early blight Alternaria solani Four Alternaria solani isolates growing on acidified potato dextrose agar (APDA) and showing colony variation and yellow pigmentation of the agar.
5492312 Cytospora cankers Cytospora spp. Pycnidial stromata of Cytospora sp. showing yellowish spores oozing from fruiting bodies after bark cut away and tissue moistened.
5492309 Cytospora cankers Cytospora spp. Tendril of spores (conidia) oozing from pycnidial stroma of a Cytospora sp.
5492304 mycelial neck rot Botrytis tulipae Rough yellow lesions on surface of an infected bulb
5492333 pine wilt nematode Bursaphelenchus xylophilus Anterior half of a pine wood (pine wilt) nematode
5492335 pine wilt nematode Bursaphelenchus xylophilus view of head region of an individual Bursaphelenchus nematode
5492340 white pine weevil Pissodes strobi an adult white pine weevil collected from spruce
5492342 white pine weevil Pissodes strobi White pine weevil adult on a spruce branch
5492336 Rhizosphaera needle cast Rhizosphaera spp. Rhizosphaera pycnidia on spruce
5492338 Rhizosphaera needle cast Rhizosphaera spp. Close-up view of Rhizosphaera fruiting bodies developing from stomates on a spruce needle. White caps of wax and colorless masses of spores visible on top of pycnidia.
5492341 white rot Stromatinia cepivora small dark sclerotia on garlic
5492305 mycelial neck rot Botrytis tulipae Dark fungal sclerotia on roots of infected (potted) plants
5492306 mycelial neck rot Botrytis tulipae Closer view of dark fungal sclerotia on roots of infected (potted) plants.
5484088 Boxwood blight Calonectria pseudonaviculata Twigs with view of leaf spots.
5484089 Boxwood blight Calonectria pseudonaviculata Small twigs with view of leaf spots from underside of leaves.
5484087 rust Pucciniastrum americanum A rust pustule on raspberry fruit with spores.
5492307 Cytospora cankers Cytospora spp. Pycnidial stromata of Cytospora exposed in bark of a spruce branch
5492308 Cytospora cankers Cytospora spp. Cross section through a pycnidial stroma in bark of a blue spruce branch
5484085 brown spot needle blight of pine Mycosphaerella dearnessii Fruiting bodies on Easter white pine needle.
5484086 brown spot needle blight of pine Mycosphaerella dearnessii Olive brown spores.
5484090 late blight Phytophthora infestans Late blight symptom, leaf spot, view of upper and lower leaf surfaces.
5484091 late blight Phytophthora infestans late blight symptom on green fruit surface
5484092 late blight Phytophthora infestans Late blight internal symptom in green fruit
5492331 Ploioderma fungi Ploioderma spp. Appearance of immature fruiting bodies as observed on needles in spring
5484096 red-banded fungus beetle Megalodacne fasciata Red-banded fungus beetle larvae and an adult.
5484097 red-banded fungus beetle Megalodacne fasciata Red-banded fungus beetle larvae and an adult with tunnels in fungal conk.
5484093 red-banded fungus beetle Megalodacne fasciata Red-banded fungus beetle larva close-up of head and legs
5484094 red-banded fungus beetle Megalodacne fasciata Red-banded fungus beetle larva close-up of head and an adult antenna.
5484095 red-banded fungus beetle Megalodacne fasciata Red-banded fungus beetle larvae and an adult.
5484098 red-banded fungus beetle Megalodacne fasciata Red-banded fungus beetle larvae and an adult with tunnels in fungal conk.
5484099 red-banded fungus beetle Megalodacne fasciata Red-banded fungus beetle larvae and an adult with tunnels in fungal conk.
5492311 Cytospora cankers Cytospora spp. Pycnidial stromata of Cytospora sp. showing yellowish spores oozing from fruiting bodies after bark was cut away and tissue moistened.
5461622 Uncinula sp. Asci with spores
5461624 Uncinula sp. Asci
5461625 Uncinula sp. Asci with spores
5461626 Uncinula sp. cleistothecium with appendages
5492339 Stigmina leaf spot Stigmina lautii dark fruiting bodies developing from stomates on a blue spruce needle
5492337 Rhizosphaera needle cast Rhizosphaera spp. Pycnidia of a Rhizosphaera sp. on a spruce needle.
5492334 pine wilt nematode Bursaphelenchus xylophilus Anterior region of a pine wood (pine wilt) nematode showing metacorpus
5492321 late blight Phytophthora infestans Cut surface exposing internal symptoms of tuber infected with Phytophthora infestans
5492316 Cytospora cankers Cytospora spp. Close up of a pycnidial stroma of Cytospora in cross section
5492310 Cytospora cankers Cytospora spp. Pycnidial stromata exposed when bark cut away from spruce canker
5461620 spruce bud scale Physokermes piceae spruce bud scale
5461621 spruce bud scale Physokermes piceae spruce bud scale close view
5461627 Uncinula sp.
5461607 biological control (general) close up of a parasitized aphid with parasite inside aphid mummy
1300020 larger pine shoot beetle Tomicus piniperda Pine shoot beetle life cycle
1300019 larger pine shoot beetle Tomicus piniperda Pine shoot beetle life cycle
5474436 defoliation due to unknown cause
5474515 Notodontid moth Datana spp. Caterpillars eating blueberry leaves.
5458673 Alternaria black molds / stem cankers Alternaria spp. Alternaria leaf spot.
5458679 Dermea Dermea sp. conidia
5458674 Alternaria black molds / stem cankers Alternaria spp. Alternaria leaf spot.
5461579 plum/cherry Prunus spp.
5461605 biological control (general) Parasitoid that has just emerged from a mummified aphid.
5461606 biological control (general) Parasitoid ready to emerge from mummified aphid
5461580 daffodils Narcissus spp.
5461581 daffodils Narcissus spp.
5461582 daffodils Narcissus spp.
5461583 daffodils Narcissus spp.
5461584 daffodils Narcissus spp.
5461585 daffodils Narcissus spp.
5461586 daffodils Narcissus spp.
5461587 daffodils Narcissus spp.
5461588 daffodils Narcissus spp.
5461591 daffodils Narcissus spp.
5461592 daffodils Narcissus spp.
5461593 daffodils Narcissus spp.
5461594 daffodils Narcissus spp.
5461595 daffodils Narcissus spp.
5461596 daffodils Narcissus spp.
5461589 tulip Tulipa spp.
5461590 tulip Tulipa spp.
5461597 daffodils Narcissus spp.
5461598 daffodils Narcissus spp.
5461599 daffodils Narcissus spp.
5461600 daffodils Narcissus spp.
5461601 crabapple and apple Malus spp.
5461608 aphids Aphis spp. Parasitoid inside mummified aphid.
5461603 primrose Primula spp. Primrose, yellow
5461604 trillium Trillium spp.
5474434 American robin Turdus migratorius American Robin fledgling
5458107 diagnostic lab sample Improper sample submission technique. Samples were crushed after going through the machine at the post office. The result was a bag of dried out leaf dust.
5457964 Dothiostroma fungus Dothistroma spp. Conidia
5458666 black root rot Thielaviopsis basicola Wilting of plant with Black Root Rot.
5458664 Plectosporium blight Plectosporium tabacinum diamond shaped lesions on petiole
2115048 ambrosia beetle Euwallacea spp. Pronotum asperate only on anterior half, punctate on basal half; declivity more sloping, bearing small tubercles, strial and interstrial punctures larger
5474433 swamp milkweed leaf beetle Labidomera clivicollis
5474432 swamp milkweed leaf beetle Labidomera clivicollis
5458690 diagnostic lab sample Small arthropods such as scale insects, can be submitted on the host plant, double bagged or in a vial.
5458689 diagnostic lab sample Examples of containers that can be used for submitting arthropod samples.
5458691 gardens
5458698 nursery operations Retention pond at a wholesale nursery.
5458342 nursery operations Perennial container production.
5458619 Asian longhorned beetle Anoplophora glabripennis Adult Asian longhorned beetle.
5458620 Asian longhorned beetle Anoplophora glabripennis Adult Asian longhorned beetles.
5458621 Asian longhorned beetle Anoplophora glabripennis Adult Asian longhorned beetle.
5458646 snow and ice damage (snow load) Heavy snow from January 2011 storm.
5458084 Japanese apple rust Gymnosporangium yamadae
5458641 snow and ice damage (snow load) Heavy snow from January 2011 storm.
5458642 snow and ice damage (snow load) Heavy snow from January 2011 storm.
5458643 snow and ice damage (snow load) Heavy snow from January 2011 storm.
5458644 snow and ice damage (snow load) Heavy snow from January 2011 storm.
5458645 snow and ice damage (snow load) Heavy snow from January 2011 storm.
5461618 stem and bulb nematode Ditylenchus dipsaci Bloat nematode injury
5461619 forest tent caterpillar Malacosoma disstria single young larva
5461617 forest tent caterpillar Malacosoma disstria injury to dogwood by forest tent caterpillars
5461616 forest tent caterpillar Malacosoma disstria view of head
5461615 puccinia rusts Puccinia spp. rust on buckthorn
5461614 forest tent caterpillar Malacosoma disstria injury to dogwood by forest tent caterpillars
5461613 anthracnose Colletotrichum spp. hyphopodia
5461612 gray molds Botrytis spp. conidiophores and spores
5461611 stem and bulb nematode Ditylenchus dipsaci Garlic Bloat Nematode symptoms
5461610 stem and bulb nematode Ditylenchus dipsaci Garlic Bloat Nematode symptoms
5458656 spruce needle rust Chrysomyxa weirii Individual Chrysomyxa weirii rust pustule swelling and splitting open on a blue spruce needle.
5458599 Ploioderma needle cast of pine Ploioderma lethale Ploioderma needlecast fruiting structure in mid-June in upstate New York.
5458622 blade spruce Gall adelgid Adelges laricis Eggs are laid at the base of needles. The newly hatched black colored nymphs can be seen on the needles in this photo.
5461628 bleeding heart Dicentra spp. pink bleeding heart
5461609 gray molds Botrytis spp. Botrytis condidiophores with spores
5457968 late blight Phytophthora infestans Sporangia of Phytophthora infestans.
5457957 late blight Phytophthora infestans Sporangia of Phytophthora infestans.
5458707 Japanese apple rust Gymnosporangium yamadae Aeciospores and peridial cells.
5458708 Japanese apple rust Gymnosporangium yamadae Close view of aeciospores
5458709 Japanese apple rust Gymnosporangium yamadae Aeciospores and peridial cells
5458710 Japanese apple rust Gymnosporangium yamadae Teliospores from gall on juniper
5458680 Japanese apple rust Gymnosporangium yamadae Gall on juniper.
5458677 black vine weevil Otiorhynchus sulcatus Two adult black vine weevils. Look closer to see white nymph in lower right corner.
5458655 spruce needle rust Chrysomyxa weirii Chrysomyxa weirii spores
5458663 Plectosporium blight Plectosporium tabacinum Close up of symptoms on fruit.
5458661 Plectosporium blight Plectosporium tabacinum symptoms on upper leaf surface
5457969 maple cankers Stegonsporium spp. Dark fruiting bodies emerging from blighted maple twig
5458705 Japanese apple rust Gymnosporangium yamadae Close-up of surface of gall on Juniper.
5458706 Japanese apple rust Gymnosporangium yamadae Close view of the spore producing surface of a gall.
5458657 spruce needle rust Chrysomyxa weirii Immature Chrysomyxa weirii rust pustules on blue spruce needles. Note slight swellings where fruiting bodies are developing within yellow-orange spots on needles.
5458658 spruce needle rust Chrysomyxa weirii Immature Chrysomyxa weirii rust pustules on blue spruce needles. Note slight swellings where fruiting bodies are developing within yellow-orange spots on needles.
5458659 spruce needle rust Chrysomyxa weirii Chrysomyxa weirii rust pustules on blue spruce needles showing the release of masses of infectious spores.
5458675 Armillaria root rots Armillaria spp. Dark shoe-string like rhizomorphs (lower left) and mycelial mat/fan (center & upper right)
5458085 Japanese apple rust Gymnosporangium yamadae Upper leaf surface
5457974 Inonotus cankers Inonotus spp. View through fungal pores showing setae. Image is a composite of several photos layered together.
5458099 Boxwood blight Cylindrocladium buxicola vesicles and spores.
5458662 Plectosporium blight Plectosporium tabacinum diamond shaped lesions on leaf veins
5458665 Ploioderma needle cast of pine Ploioderma lethale Eight mature ascospores
5457972 maple cankers Stegonsporium spp. dark spores
5458095 Boxwood blight Cylindrocladium buxicola fruiting bodies on leaf surface
5458096 Boxwood blight Cylindrocladium buxicola Dense production of fruiting bodies on leaf surface with vesicles emerging above spore masses.
5457973 maple cankers Stegonsporium spp. fruiting body with mature spores
5458300 black stem, stalk rot Thielaviopsis spp. dark aleuriospores from a holly root
5458676 Armillaria root rots Armillaria spp. A rhizomorph (top) compared to a root of the host plant bottom).
5458667 bacterial leaf scorch Xylella fastidiosa Bacterial Leaf Scorch symptoms on maple leaves.
5458678 Dutch elm disease (novi-ulmi) Ophiostoma novo-ulmi Synnemata
5458672 leaf scorch of shade trees Xylella fastidiosa ssp. multiplex Bacterial Leaf Scorch symptoms on oak leaves.
5458688 Stigmina leaf spot Stigmina lautii
5458668 bacterial leaf scorch Xylella fastidiosa Bacterial Leaf Scorch and Black Spot on an elm leaf.
5458669 bacterial leaf scorch Xylella fastidiosa Bacterial Leaf Scorch symptoms on elm.
5458670 bacterial leaf scorch Xylella fastidiosa Symptoms of Bacterial Leaf Scorch on maple leaves. Note distinct bands between green and brown foliage on some leaves.
5458671 bacterial leaf scorch Xylella fastidiosa Bacterial Leaf Scorch symptoms on maple leaves.
5458686 downy mildew Peronospora sparsa Sporangia.
5458685 downy mildew Peronospora sparsa Sporangia.
5458681 Impatiens Necrotic Spot Virus Tospovirus INSV Foliar symptoms.
5458682 orange rust Arthuriomyces peckianus Black raspberry infected with the Orange Rust fungus Arthuriomyces peckianus and exhibiting numerous bright orange pustules developing on the undersides of leaves.
5458683 orange rust Arthuriomyces peckianus Black raspberry infected with the Orange Rust fungus Arthuriomyces peckianus and exhibiting numerous bright orange pustules developing on the undersides of leaves.
5458088 mycelial neck rot Botrytis tulipae Dark fungal sclerotia developing on roots might be mistaken for clumps of media.
5458715 downy mildew Plasmopara viburni Lesions on the underside of a leaf. Note how many individual lesions appear angular as lesions develop between small leaf veins.
5458716 downy mildew Plasmopara viburni Close view of adjacent lesions on the underside of a leaf. Sparser white growth is the least mature.
5458712 downy mildew Plasmopara viburni Close-up view of lesions on the underside of a leaf.
5458713 downy mildew Plasmopara viburni Fruiting bodies developing along a vein on the underside of the leaf.
5458301 black stem, stalk rot Thielaviopsis spp. Chalara state showing conidiophores and a few pale single-cell endospores
5458714 downy mildew Plasmopara viburni Lesions on the upper surface of a leaf.
5458711 downy mildew Plasmopara viburni Lesions on the underside of a leaf.
5457979 Inonotus cankers Inonotus spp. Fruiting body removed from the base of a living tree
5458593 Russula mushroom Russula spp. Russula spp. at Echo Lake-Cathedral Ledge State Park, Bartlett, New Hampshire.
5458594 Russula mushroom Russula spp. Russula spp. at Echo Lake-Cathedral Ledge State Park, Bartlett, New Hampshire.
5458592 Russula mushroom Russula spp. Russula spp. at Echo Lake-Cathedral Ledge State Park, Bartlett, New Hampshire.
5458079 basil downy mildew Peronospora belbahrii sporangia
5458094 Boxwood blight Cylindrocladium buxicola vesicles of the fungus with diamond shaped tips
5458623 blade spruce Gall adelgid Adelges laricis Waxy secretion on larch needles.
5458624 blade spruce Gall adelgid Adelges laricis Eggs are laid at the base of needles.
5458376 rust Puccinia pelargonii-zonalis Lesions on underside of leaf, close view
5458081 Japanese apple rust Gymnosporangium yamadae Aecia on the underside of a crabapple leaf.
5457980 Inonotus cankers Inonotus spp. Underside of fruiting structure collected from the base of a tree.
5458377 rust Puccinia pelargonii-zonalis a single teliospore
5458086 basil downy mildew Peronospora belbahrii Masses of purplish sporangia on the undersurface of a leaf.
5458087 basil downy mildew Peronospora belbahrii Masses of purplish sporangia on the undersurface of a leaf.
5457977 balsam twig aphid Mindarus abietinus two balsam twig aphid eggs on bark
5458091 basil downy mildew Peronospora belbahrii Heavy spore production on the undersurface of the leaf may look like dust or dirt on the tissue.
5458092 basil downy mildew Peronospora belbahrii A closer view of a lesion with dense sporulation that looks like a grayish-purple mold on the leaf.
5458378 rust Puccinia pelargonii-zonalis Urediniospores
5458379 rust Puccinia pelargonii-zonalis Close view of one lesion on the underside of an infected leaf. Note the pustules breaking open in the center where spores are being liberated.
5458380 rust Puccinia pelargonii-zonalis Urediniospores and Teliospores.
5458381 rust Puccinia pelargonii-zonalis Numerous urediniospores with a few two celled teliospores also visible.
5458382 rust Puccinia pelargonii-zonalis Foliar lesions as viewed on underside of infected leaf.
5458383 rust Puccinia pelargonii-zonalis Numerous foliar lesions as viewed on underside of infected leaf.
5458384 rust Puccinia pelargonii-zonalis Underside of severely infected geranium leaf. Note the lesion on the petiole.
5458385 rust Puccinia pelargonii-zonalis Upper surface of severely infected geranium leaf. Note the lesion on the petiole.
5458386 rust Puccinia pelargonii-zonalis A single lesion on the underside of an infected leaf. This lesion looks like a happy face.
5458302 black stem, stalk rot Thielaviopsis spp. dark aleuriospores breaking up into individual chlamydospores
5457975 anthracnose Colletotrichum spp. Colletotrichum acervuli with setae developing on butternut squash.
5458357 fourlined plant bug Poecilocapsus lineatus Fourlined Plantbug Nymph on forsythia.
5458595 oak bullet gall Disholcaspis quercusglobulus Oak bullet galls caused by cynipid wasps.
5458353 downy spot Microstroma juglandis The fungus sporulates on lower leaf surfaces in a dense white mat of fungal tissue.
5458352 cottony camellia scale Pulvinaria floccifera Females (brown) with eggs (cottony white).
5458638 cicada killer Sphecius speciosus Cicada killer wasp adult.
5458639 cicada killer Sphecius speciosus Cicada killer wasp adult.
5458640 cicada killer Sphecius speciosus Cicada killer wasp adult.
5458597 Rimosus decay Phellinus robiniae Fruiting body on trunk.
5458602 quince rust Gymnosporangium clavipes
5458601 quince rust Gymnosporangium clavipes Cedar-quince rust aecia on hawthorn fruit.
5458598 pheromone traps Dogwood borer pheromone trap.
5458596 juniper-pear rust Gymnosporangium sabinae Orangish lesion on the upperside of a pear leaf.
5458600 question mark Polygonia interrogationis Question Mark Caterpillar Larva.
5458613 rose rosette disease Uncharacterised agent RRD Witches' broom of rose rosette disease with bright red shoots emerging in the spring.
5458603 Rhabdocline needlecast Rhabdocline weirii The fruiting bodies rupture the needle epidermis in spring exposing the spore bearing areas.
5458636 Rhabdocline needlecast Rhabdocline weirii  Rhabdocline apothecia are released when flaps of leaf epidermis fold back on either side of the midrib.
5458615 black horse fly Tabanus atratus black horsefly larva
5458618 western conifer-seed bug Leptoglossus occidentalis Western conifer-seed bug adult on Scots pine.
5458617 viburnum leaf beetle Pyrrhalta viburni Viburnum leaf beetle egg masses are laid on terminal twigs of viburnums.
5458614 roundheaded apple tree borer Saperda candida Roundheaded apple tree borer adult.
5458338 ash flower gall mite Eriophyes fraxiniflora Ash flower gall mite damage(distorted male flowers which have turned brown) as it appeared in August.
5458100 Boxwood blight Cylindrocladium buxicola Vesicles and cylindrical conidia.
5458047 protozoa Spongospora subterranea f.sp. subterranea Spores balls or cystosori collected from lesions.
5458080 basil downy mildew Peronospora belbahrii Sporangia
5458090 mycelial neck rot Botrytis tulipae general view of symptomatic plant showing decay of bulb
5457978 Boxwood blight Cylindrocladium buxicola Boxwood blight pathogen showing vesicles extending above spore clusters.
5457958 brown rots Monilinia spp. fruiting bodies on leaf tissue
5457981 Boxwood blight Cylindrocladium buxicola Conidiophores developing on a leafspot.
5457959 brown rots Monilinia spp. fruiting bodies on twig
5458336 bark lice (Family Psocidae) Barklice are gregarious and cluster together.
5458337 tar spot of maple Rhytisma acerinum Black tar-like fruiting structures on the upper side of leaves are diagnostic signs of giant tar spot.
5458351 balsam woolly adelgid Adelges piceae Damage in the form of swollen, deformed branches.
5458349 balsam gall midge Paradiplosis tumifex Galled needles on balsam fir.
5458360 mountain-ash sawfly Pristiphora geniculata
5458355 euonymus caterpillar Yponomeuta cagnagella Euonymus caterpillars in web.
5458356 ocellate gall midge Acericecis ocellaris Eyespot gall on a red maple leaf caused by the larvae of a midge.
5458358 rust Puccinia malvacearum Hollyhock rust pustules on lower surface of hollyhock leaf.
5458359 Insolibasidium fungus Insolibasidium deformans White bloom of basidia and basidiospores on lower leaf surface.
5458354 emerald ash borer Agrilus planipennis The trap is a purple, three-dimensional triangle constructed of thin, corrugated, plastic that has been coated with non-toxic glue and baited with a lure.
5458322 walnut twig beetle Pityophthorus juglandis Walnut twig beetle residing in a gallery under the bark of black walnut.
5458323 walnut twig beetle Pityophthorus juglandis Walnut twig beetle demonstration of extremely small size. Pulled out of a gallery and shown on the end of a craft brush.
5458324 Thousand Cankers Disease Geosmithia morbida Thousand cankers disease showing walnut twig beetle galleries and Geosmithia morbida cankers on black walnut.
5458325 walnut twig beetle Pityophthorus juglandis Entrance and exit holes of the walnut twig beetle on black walnut.
5458326 walnut twig beetle Pityophthorus juglandis Walnut twig beetle larvae residing in a gallery under the bark of a black walnut.
5458327 walnut twig beetle Pityophthorus juglandis Walnut twig beetle larvae residing in a gallery under the bark of a black walnut.
5458328 walnut twig beetle Pityophthorus juglandis Walnut twig beetle larvae residing in a gallery under the bark of a black walnut.
5458329 Thousand Cankers Disease Geosmithia morbida Thousand cankers disease symptoms of flagging on a mature black walnut.
5458330 Thousand Cankers Disease Geosmithia morbida Thousand cankers disease symptoms on a mature black walnut.
5458331 Thousand Cankers Disease Geosmithia morbida Thousand cankers disease symptoms of flagging on a mature black walnut.
5458332 Thousand Cankers Disease Geosmithia morbida Thousand cankers disease symptoms of flagging on a mature black walnut.
5458333 Thousand Cankers Disease Geosmithia morbida Thousand cankers disease symptoms of advanced decline on a mature black walnut.
5458334 Thousand Cankers Disease Geosmithia morbida Thousand cankers disease symptoms of advanced decline on a mature black walnut.
5458335 Thousand Cankers Disease Geosmithia morbida Thousand cankers disease symptoms of advanced decline on a mature black walnut.
5458350 beefsteak fungus Fistulina hepatica
5458340 nursery operations Young trees in production field.
5458339 nursery operations Container production at a wholesale nursery.
5458344 nursery operations Yellow sticky cards for monitoring in a commercial greenhouse.
5458345 nursery operations Container production at a wholesale nursery.
5458341 nursery operations Tree production at a nursery.
5458343 nursery operations Perennial container production.
5458346 nursery operations Container production in a commercial greenhouse.
5458347 nursery operations Conifer seedlings. Tree production at a wholesale nursery.
5458348 nursery operations Rows of young trees in a wholesale nursery.
5458046 protozoa Spongospora subterranea Close view of Powdery Scab (Spongospora subterranea) lesions.
5458044 protozoa Spongospora subterranea Tuber exhibiting Powdery Scab (Spongospora subterranea) lesions.
5458045 protozoa Spongospora subterranea Powdery Scab (Spongospora subterranea) lesions.
5457976 balsam twig aphid Mindarus abietinus A single dark egg covered with thin rods of light colored wax which gives the egg a silvery appearance.
5458048 protozoa Spongospora subterranea Cytosori or spore balls of Spongospora subterranea.
5457955 bacterial leaf scorch Xylella fastidiosa Bacterial leaf scorch on Ulmus spp.
5458089 mycelial neck rot Botrytis tulipae Symptoms of Botrytis tulipae, Tulip Fire, on leaves and petioles.
5457963 Dutch elm disease (novi-ulmi) Ophiostoma novo-ulmi Synemmata developing within a wound on an elm branch.
5458101 mycelial neck rot Botrytis tulipae Infected bulb exhibiting rot with dark sclerotia developing on surface.
5457967 gummy stem blight (vine decline) Didymella bryoniae Symptoms developing on fruit post harvest.
5457966 bacterial blight of geranium Xanthomonas hortorum pv. pelargonii Wilting symptom without characteristic wedge-shaped leaf spots readily apparent.
5458103 mycelial neck rot Botrytis tulipae Black sclerotia and gray mycelium and spores developing on roots of infected plants.
5458104 mycelial neck rot Botrytis tulipae Dieback of leaf tips and neck rot, with dark fungal sclerotia present on rotted tissue of the bulb.
5458105 mycelial neck rot Botrytis tulipae Dark sclerotia developing on an infected bulb.
5458093 mycelial neck rot Botrytis tulipae Tulip Fire: foliar symptoms caused by Botrytis tulipae.
5458066 chrysanthemum white rust Puccinia horiana Chrysanthemum white rust pustules on the lower surface of the leaf.
5458067 chrysanthemum white rust Puccinia horiana Chrysanthemum white rust pustules on the lower surface of the leaf.
5458068 chrysanthemum white rust Puccinia horiana Chrysanthemum white rust pustules on the lower surface of the leaf.
5458069 chrysanthemum white rust Puccinia horiana Chrysanthemum white rust pustules on stems of chrysanthemum sp.
5458061 hydrangea Hydrangea spp. Hydrangea flower.
5458062 hydrangea Hydrangea spp. Hydrangea plant flowering.
5458063 plant diagnostics A technician with pipette.
5458106 diagnostic lab sample Improper sample submission. This sample did not have a submission form and was sent in a folded plastic bag in a letter envelope that was crushed after going through the machine at the post office.
5458108 diagnostic lab sample Improper sample submission technique. Tomato, tomato leaves, sample submission form and paper towels all enclosed in one sealable bag. Even the best intentions do not always work. This person wrote on the package "Do not crush!"
5458064 diagnostic lab sample Proper sampling technique. Suspect significant pathogens should be double bagged in sealable bags, then placed in a crush proof box. Always remember to include a sample submission form; filled out as much as possible and include it in the outermost shipping container.
5458065 diagnostic lab sample A diagnostician from the National Plant Diagnostic Network (NPDN) examining a plant sample in the lab.
5458051 quince rust Gymnosporangium clavipes Gelatinous telial mass oozing out of small branch swelling.
5458049 elm sawfly Cimbex americana Elm sawfly larva on a birch tree leaf in September.
5458050 eyed click beetle Alaus oculatus Adult eyed click beetle on firewood.
0002112 mile-a-minute weed Persicaria perfoliata The distribution of mile-a-minute weed and natural enemy survey areas by province in China: Checked areas-surveyed areas; striped areas- areas with mile-a-minute weed, not yet surveyed
0002046 grass fly Lipara similis Note dried top leaf and lack of flower.
0002114 mile-a-minute weevil Rhinoncomimus latipes
0002116 mile-a-minute weevil Rhinoncomimus latipes and its damage on a stem
2130081 broad-nosed weevil Otiorhynchus raucus
2130080 bark beetle Hylurgops palliatus
2130077 goldenhaired bark beetle Hylurgus ligniperda
1300028 larger pine shoot beetle Tomicus piniperda exit holes of newly emerging adult pine shoot beetle
1300017 larger pine shoot beetle Tomicus piniperda Flagging and dying pine terminal infested by adult pine shoot beetle
0002034 root-boring weevil Hylobius transversovittatus destroyed rootstock with frass of larva and emerging new adult
0002031 black-margined loosestrife beetle Galerucella calmariensis mating pair
0002001 Eurasian watermilfoil Myriophyllum spicatum a submersed aquatic plant at Cornell University Research Ponds
2116018 ambrosia beetles Xylosandrus spp. Procoxae widely separated; body stout, elytra less than 1.3 times as lng as pronotum
2116021 ambrosia beetles Xyloterinus spp.
2116015 bark beetles Xylechinus spp.
2116011 bark beetles Xyleborinus spp.
2116001 bark beetles Scolytodes spp. Anterior area of pronotum transversely rugose; pronotum and elytra subglabrous
2115082 cedar bark beetles Phloeosinus spp. Antennal club with three oblique sutures; funicle attached to base of club; eye deeply emarginate; hosts Cupressinine trees
2116019 ambrosia beetles Xyloterinus spp.
2116006 shoot beetles Tomicus spp.
2116007 shoot beetles Tomicus spp. Elytra with erect interstrial setae in uniseriate rows; elytra smooth, shinning
2115080 cedar bark beetles Phloeosinus spp.
2115081 cedar bark beetles Phloeosinus spp. Antennal club with three oblique sutures; funicle attached to base of club; eye deeply emarginate; hosts Cupressinine trees
2115057 ash bark beetles Hylesinus spp. Eye entire; vestiture scale-like; hosts Fraxinus
2115061 bark beetles Hylurgopinus spp. Elytral vestiture hair-like; antennal club slightly flattened; in Ulmus
2115073 bark beetles Micracisella spp. Eye subcontiguous beneath, emarginate
2115076 bark beetles Orthotomicus spp.
2115095 bark beetles Polygraphus spp. Eye completely divided into two parts; antennal club solid , unmarked by sutures
2115090 bark beetles Pityokteines spp.
2115098 bark beetles Pseudopityophthorus spp.
2116005 bark beetles Thysanoes spp. Pronotum longer than wide, widest near middle, summit less prominent
2115093 twig beetles Pityophthorus spp.
0002003 milfoil moth Acentria ephemerella male at Cornell University Research Ponds
0002035 flower feeding weevil Nanophyes marmoratus on flower-spike
0002047 univoltine gall midge Lasioptera hungarica and fungal mycelium.
1949049 Potato Yellow Dwarf Virus Nucleorhabdovirus PYDV Potato yellow dwarf rhabdovirus infection showing severe cracking and malformation of potato tubers.
2115079 bark beetles Pagiocerus spp. Sutures of antennal club procurved; body oval; frons excavated with median tubercle just above epistoma
1949048 Potato Yellow Dwarf Virus Nucleorhabdovirus PYDV Later symptoms of potato yellow dwarf rhabdovirus infection in potato showing dwarfing and apical yellowing as it often appears in the field.
2115089 bark beetles Pityogenes spp. Female frons deeply, rather narrowly excavated; male declivity with 2 or 3 pairs of enlarged teeth; antennal club compressed, 2 sutures visible on distal third of posterior face
2116016 bark beetles Xylechinus spp. Elytral interstriae with a row of erect, flattened scales in addition to recumbant ground cover; antennal funicle 5-segmented
2115100 bark beetles Pycnarthrum spp. Pronotum uniformly punctured, unarmed; vestiture of pronotum and elytra abundant, consisting of erect, stout almost scale-like bristles
2115092 bark beetles Pityokteines spp. Female frons convex; male declivity more narrowly impressed with 2 or 3 pairs of very small teeth or granules; antennal club obliquely truncate, without sutures on posterior face
2115077 bark beetles Orthotomicus spp. Antennal club obliquely truncate, with sutures recurved; elytral declivity less strongly excavated, the third tooth displaced messally, not on summit of declivital margin
5424410 sugar maple Acer saccharum Leaves of silver maple showing marginal leaf scorch with distinct bands of discoloration between scorched and symptomless tissue caused by the bacterium, Xylella fastidiosa.
1300032 larger pine shoot beetle Tomicus piniperda Pine tree with many dying, flagging terminals due to pine shoot beetle adult
1300031 larger pine shoot beetle Tomicus piniperda Flagging pine terminal indicating presence of pine shoot beetle adult
0002038 purple loosestrife Lythrum salicaria Tonawanda Wildlife Management Area
0002002 Eurasian watermilfoil Myriophyllum spicatum dense canopy on surface at Cayuga Lake
0022082 black-margined loosestrife beetle Galerucella calmariensis
0002030 purple loosestrife Lythrum salicaria wetland dominated; Tonawanda Wildlife Management Area
1300036 viburnum leaf beetle Pyrrhalta viburni Larval and adult feeding damage
1300034 larger pine shoot beetle Tomicus piniperda Crowns of pine trees damaged by pine shoot beetle; note thinning of crown due to fallen terminals
1300008 viburnum leaf beetle Pyrrhalta viburni Defoliation due to heavy larval infestation
9005050 viburnum leaf beetle Pyrrhalta viburni typical feeding damage by larvae
2116020 ambrosia beetles Xyloterinus spp. Antennal club with subcorneous basal area broadly procurved; protibia flattened and devoid of tubercles on posterior face; frons not excavated in either sex; anterior margin of pronotum rounded in both sexes
1300029 larger pine shoot beetle Tomicus piniperda Entrance turrets of adult pine shoot beetle on pine terminal
1300023 larger pine shoot beetle Tomicus piniperda adult pine shoot beetle in gallery in pine terminal
2115085 bark beetles Phloeotribus spp.
2116012 bark beetles Xyleborinus spp. Scutellum conical; lower margin of declivity, beginning about interspace 7, bearing a series of pointed tubercles, the one nearest suture largest
2116017 ambrosia beetles Xylosandrus spp.
0002006 milfoil weevil Euhrychiopsis lecontei near adult feeding scars at Cornell University Research Ponds
2115066 bark beetles Hypothenemus spp.
2115064 bark beetles Hylurgus spp.
2115072 bark beetles Micracisella spp.
2115075 bark beetles Monarthrum spp. Antennal funicle 2-segmented; posterior surface of foretibiae tuberculate; elytra emarginate or divarcate at sutural apex
2115053 bark beetles Hylastinus spp. Prothoracic precoxal area large, lateral margins strongly elevated from anterior margin to coxae
2115074 bark beetles Monarthrum spp. Antennal funicle 2-segmented; posterior surface of foretibiae tuberculate; elytra emarginate or divarcate at sutural apex
2115055 ash bark beetles Hylesinus spp.
2115062 bark beetles Hylurgops spp. Pronotum usually constricted anteriorly, discal surface with about equal numbers of small and large punctures intermixed; 3rd tarsomere bilobed
2115059 bark beetles Hylocurus spp. Sutures of antennal club broadly procurved; scape club-shaped, with few setae; eye oval small
2115071 bark beetles Micracis spp. Eye moderately separated beneath, entire
2115052 bark beetles Hylastes spp.
2115051 bark beetles Hylastes spp. Pronotum not noticeably constricted anteriorly, discal surface with punctures uniformly large; 3rd tarsomere narrower, elongate
2115050 ambrosia beetle Euwallacea spp. Pronotum asperate only on anterior half, punctate on basal half; declivity more sloping, bearing small tubercles, strial and interstrial punctures larger
2116002 true fir bark beetles Scolytus spp.
2116003 true fir bark beetles Scolytus spp. Scutellum depressed; elytra slightly if at all declivous behind, the abdomen ascending abruptly to meet them; antennal scape distinctly shorter than funicle
2115097 bark beetles Pseudohylesinus spp. Elytral interstriae bearing a row of erect, hair-like setae, ground cover scale-like; antennal funicle 7-segmented
2115054 bark beetles Hylastinus spp.
2115078 bark beetles Orthotomicus spp. Antennal club obliquely truncate, with sutures recurved; elytral declivity less strongly excavated, the third tooth displaced messally, not on summit of declivital margin
2115083 bark beetles Phloeotribus spp.
2115091 bark beetles Pityokteines spp. Female frons convex; male declivity more narrowly impressed with 2 or 3 pairs of very small teeth or granules; antennal club obliquely truncate, without sutures on posterior face
2116009 bark beetles Trypodendron spp. Antennal club with subcorneous basal area strongly, rather narrowly procurved; protibia of female thickened and tuberculate on posterior face, flattened and finely tuberclate in male; male head deeply, broadly excavated, pronotum sub-quadrate; female frons convex, anterior margin of female pronotum rounded
2116010 bark beetles Trypodendron spp. Antennal club with subcorneous basal area strongly, rather narrowly procurved; protibia of female thickened and tuberculate on posterior face, flattened and finely tuberclate in male; male head deeply, broadly excavated, pronotum sub-quadrate; female frons convex, anterior margin of female pronotum rounded
2115056 ash bark beetles Hylesinus spp. Eye entire; vestiture scale-like; hosts Fraxinus
2115099 bark beetles Pseudothysanoes spp. Elytral declivity more gradual, evenly convex, rounded behind; sutures of antennal club indicated only by marginal notches
2115065 bark beetles Hylurgus spp. Elytra with erect interstrial setae abundant, randomly placed; elytra densely rugose
2116008 bark beetles Trypodendron spp.
2116004 bark beetles Thysanoes spp.
2115087 bark beetles Pityogenes spp.
2115063 bark beetles Hylurgops spp.
2115086 bark beetles Phloeotribus spp.
2115096 bark beetles Polygraphus spp. Eye completely divided into two parts; antennal club solid , unmarked by sutures
2115070 bark beetles Lymantor spp.
2115094 bark beetles Polygraphus spp.
2115058 bark beetles Hylocurus spp.
2115049 ambrosia beetle Euwallacea spp. Pronotum asperate only on anterior half, punctate on basal half; declivity more sloping, bearing small tubercles, strial and interstrial punctures larger
2115045 bark beetles Dryoxylon spp. Pronotum 1.4 times longer than wide, anterior margin slightly notched, or emoarginate; elytral declivity moderately deeply, evenly sulcate
2115044 bark beetles Dryocoetes spp. Pronotum 1.0-1.2 times longer than wide, anterior margin evenly rounded; elytral declivity evenly convex to slightly flattened
2115035 bark beetles Crypturgus spp. Antennal funicle 2-segmented, club with 1 obscure suture at tip
2115026 bark beetles Cnesinus spp. Sutures of antennal club straight; body and frons not as below
2115034 bark beetles Crypturgus spp. Antennal funicle 2-segmented, club with 1 obscure suture at tip
2115032 ambrosia beetles Corthylus spp. Antennal funicle 1-segmented; posterior face of foretibiae smooth; elytra evennly rounded behind, without a sutural notch at apex
2115038 bark and ambrosia beetles Dendroctonus spp.
2115039 bark beetles Dendrosinus spp. Antennal club symmetrical, sutures transverse; posteriolateral area of pronotum abruptly grooved to accommodate elytral margins; elytra extended anteriorly over pronotum
2115040 bark beetles Dendrosinus spp. Antennal club symmetrical, sutures transverse; posteriolateral area of pronotum abruptly grooved to accommodate elytral margins; elytra extended anteriorly over pronotum
2115041 bark beetles Dolurgus spp. Antennal funicle 3-segmented, club with 3 sutures
2115042 bark beetles Dryocoetes spp. Pronotum 1.0-1.2 times longer than wide, anterior margin evenly rounded; elytral declivity evenly convex to slightly flattened
2115043 bark beetles Dryocoetes spp. Pronotum 1.0-1.2 times longer than wide, anterior margin evenly rounded; elytral declivity evenly convex to slightly flattened
2115030 cone beetles Conophthorus spp.
2115003 ambrosia beetle Xyleborus californicus ambrosia beetle native to Asia; 1st report in US: CA - 1944; East US - 1990s
2114100 fig bark beetles Hypoborus spp.
2115031 ambrosia beetles Corthylus spp. Antennal funicle 1-segmented; posterior face of foretibiae smooth; elytra evennly rounded behind, without a sutural notch at apex
2115027 bark beetles Cnesinus spp. Sutures of antennal club straight; body and frons not as below
2115029 bark beetles Coccotrypes spp. Frons convergently aciculate; elytral declivity evenly convex, extending over at least posterior 1/3 of elytra, granules absent; protibia armed on lateral margin by 2-4 socketed teeth; posterior face of antennal club with 2 sutures
2115025 bark beetles Cnesinus spp.
2115024 bark beetles Cnemonyx spp. Scutellum small, flush with surface of elytra ; elytral declivity rather steep, descending to meet the horizontal abdomen; antennal scape at least as long as funicle
2115001 bark beetles Monarthrum spp.
2115011 bark beetles Pityogenes spp.
2115004 bark beetles Coccotrypes spp. Notice that Coccotrypes has a generally convex appearance from front to back and is hairy throughout the dorsal surface.
2115005 bark beetles Coccotrypes spp.
2115016 ambrosia beetles Ambrosiodmus spp. Pronotum asperate to base; declivity steep, bearing several granules or rather large denticles, strial and interstrial punctures small
2115020 bark beetles Chramesus spp.
2115021 bark beetles Chramesus spp. Antennal club solid, unmarked by sutures; funicle attached to side of club; eye entire; hosts mostly hardwoods
2115022 bark beetles Chramesus spp. Antennal club solid, unmarked by sutures; funicle attached to side of club; eye entire; hosts mostly hardwoods
2115018 bark beetles Cactopinus spp.
2115019 bark beetles Carphoborus spp. Antennal funicle 5-segmented
2115009 bark beetles Hypothenemus spp.
2115023 bark beetles Cnemonyx spp.
2115088 bark beetles Pityogenes spp. Female frons deeply, rather narrowly excavated; male declivity with 2 or 3 pairs of enlarged teeth; antennal club compressed, 2 sutures visible on distal third of posterior face
2115060 bark beetles Hylurgopinus spp.
2115033 bark beetles Cryphalus spp.
2115036 bark and ambrosia beetles Dendroctonus spp.
2115047 bark beetles Dryoxylon spp. Pronotum 1.4 times longer than wide, anterior margin slightly notched, or emoarginate; elytral declivity moderately deeply, evenly sulcate
2115028 bark beetles Coccotrypes spp.
2114099 ambrosia beetles Gnathotrichus spp.
2114098 ambrosia beetles Corthylus spp.
2114092 bark beetle Alniphagus spp. Eye shallowly emarginate; vestiture hair-like; hosts Alnus
2114093 bark beetle Alniphagus spp.
2114094 ambrosia beetles Ambrosiodmus spp.
2114095 bark beetles Chaetophloeus spp.
2114096 bark beetles Chaetophloeus spp.
2115008 bark beetles Hylurgops spp.
2115046 bark beetles Dryoxylon spp. Pronotum 1.4 times longer than wide, anterior margin slightly notched, or emoarginate; elytral declivity moderately deeply, evenly sulcate
2114091 bark beetle Alniphagus spp.
0002007 milfoil weevil Euhrychiopsis lecontei in stem nearing pupation at Cornell University Research Ponds
1300033 larger pine shoot beetle Tomicus piniperda Pine terminals, infested by adult pine shoot beetle, fallen from tree
0002033 root-boring weevil Hylobius transversovittatus on leaf
0002037 purple loosestrife Lythrum salicaria after control through combination of Galerucella spp. and Hylobius transversovittatus; Tonawanda Wildlife Management Area
0002036 purple loosestrife Lythrum salicaria infestation before release of Galerucella spp. and Hylobius transversovittatus (note cages); Tonawanda Wildlife Management Area
0002045 common reed Phragmites australis invasion front.
1949059 apple maggot Rhagoletis pomonella Apple injured by apple maggot (Rhagoletis pomonella).
1949056 lesser appleworm Grapholita prunivora Blossom end of apple fruit showing typical injury by Cydia prunivora.
0656064 plum curculio Conotrachelus nenuphar Superficial Conotrachelus nenuphar oviposition (D-shaped marks) and feeding (small spots) scars on a mature apple fruit. black and white image
0656059 Elm yellows Phytoplasma N/A Necrotic rootlets on Ulmus americana caused by elm phloem necrosis MLO infection.
0656058 Elm yellows Phytoplasma N/A Phloem discoloration in Ulmus americana caused by elm phloem necrosis phytoplasma infection; healthy (top) and diseased (bottom).
0656057 Elm yellows Phytoplasma N/A Early foliar symptoms caused by elm phloem necrosis phytoplasma; healthy (left) and diseased (right) branches, showing epinasty of leaves.
5357466 Dutch elm disease Ophiostoma ulmi Elm tree aflicted with Dutch elm disease (Ophiostoma ulmi).
5357465 elm Ulmus spp. Healthy elm tree in a neighborhood.
5174038 imported willow leaf beetle Plagiodera versicolora
3225078 Asian longhorned beetle Anoplophora glabripennis exit holes with dime for size reference
1291037 purple loosestrife Lythrum salicaria Supplies needed to monitor: meter sticks, measuring tape, stopwatch, camera, compass, GPS, clipboard and writing instrument, and frame components
3225082 Asian longhorned beetle Anoplophora glabripennis damage
2115084 bark beetles Phloeotribus spp.
2134065 swede midge Contarinia nasturtii Swede midge larvae and feeding damage on cauliflower. Swede midge larvae prefer to feed on growing tips but in high densities they occupy the stem and the leaves.
2134064 swede midge Contarinia nasturtii body size 1.3 mm
2134066 swede midge Contarinia nasturtii Damaged red cabbage. Note twisted leaves, swelling
2134067 swede midge Contarinia nasturtii Damaged red cabbage followed by bacterial soft rot and collapse of plant
2134068 swede midge Contarinia nasturtii Swede midge damaged plant. Note brown scarring, multiple stems, twisted leaves.
2134069 swede midge Contarinia nasturtii Damaged red cabbage
2134070 swede midge Contarinia nasturtii Damaged green cabbage
2134071 swede midge Contarinia nasturtii Damaged plant - leaf twisting, brown scarring
2134072 swede midge Contarinia nasturtii Damaged transplant - swollen petiole, brown scars
2134073 swede midge Contarinia nasturtii Damaged green cabbage - twisted leaves, rotten center
2130079 alfalfa snout beetle Otiorhynchus ligustici
2130078 black vine weevil Otiorhynchus sulcatus
1416003 Dalmatian toadflax Linaria dalmatica Possible hybrid toadflax plant (center) between yellow toadflax (left) and Dalmatian toadflax (right).
1949050 Potato Yellow Dwarf Virus Nucleorhabdovirus PYDV Potato yellow dwarf rhabdovirus infection showing severe internal necrosis, cracking and malformation of potato tubers.
1300012 viburnum leaf beetle Pyrrhalta viburni Adult feeding damage to viburnum foliage
1300013 viburnum leaf beetle Pyrrhalta viburni Adult feeding damage
1300035 viburnum leaf beetle Pyrrhalta viburni Viburnum shrub denuded by larvae of viburnum leaf beetle
1300037 viburnum leaf beetle Pyrrhalta viburni Adult beetle and feeding damage to viburnum leaf
1300038 viburnum leaf beetle Pyrrhalta viburni Heavily infested viburnum shrub
1300039 viburnum leaf beetle Pyrrhalta viburni Dead viburnum shrubs (due to viburnum leaf beetle) in a landscape planting
1300009 viburnum leaf beetle Pyrrhalta viburni Adult feeding damage (small irregular holes) to leaves of Viburnum
1300010 viburnum leaf beetle Pyrrhalta viburni Leaf skeletoninizg by larvae
1300011 viburnum leaf beetle Pyrrhalta viburni Larvae on undersurface of leaf of Viburnum; note feeding damage
1300025 larger pine shoot beetle Tomicus piniperda Adult habitus
1300027 larger pine shoot beetle Tomicus piniperda Larval gallery design and pine terminal with adult gallery and entrance turret
1300021 larger pine shoot beetle Tomicus piniperda
1300022 larger pine shoot beetle Tomicus piniperda Adult habitus
1300014 viburnum leaf beetle Pyrrhalta viburni old Viburnum twig with egg pits/cavities (egg plug missing)
1300015 viburnum leaf beetle Pyrrhalta viburni Adult habitus
1300030 viburnum leaf beetle Pyrrhalta viburni damaged viburnum shrub by viburnum leaf beetle
0949053 Asian longhorned beetle Anoplophora glabripennis exit holes
0177045 Elm yellows Phytoplasma N/A Phloem discoloration in Ulmus americana, caused by elm phloem necrosis phytoplasma, close-up
1291012 black-margined loosestrife beetle Galerucella calmariensis Eggs and larvae
1300001 viburnum leaf beetle Pyrrhalta viburni Ornamental shrub (Viburnum sp.) with heavy defoliation due to larval feeding damage (in May) in central New York
1300003 viburnum leaf beetle Pyrrhalta viburni Dead and dying viburnum shrubs due to larval feeding damage
1300004 viburnum leaf beetle Pyrrhalta viburni Arrowwood foliage damaged by larval feeding
1300005 viburnum leaf beetle Pyrrhalta viburni Adult habitus, vouchered specimen from first New York collection site - Cayuga Co. along southern shore of Lake Ontario in July 1996
1300006 viburnum leaf beetle Pyrrhalta viburni Ornamental Viburnum shrub damaged by viburnum leaf beetle
1300007 viburnum leaf beetle Pyrrhalta viburni Skeletonized leaves of viburnum shrub, caused by larvae of viburnum leaf beetle
1350084 blunt knapweed flower weevil Larinus obtusus
1350092 knapweed root weevil Cyphocleonus achates in knapweed root
9005044 viburnum leaf beetle Pyrrhalta viburni first instar
9005045 viburnum leaf beetle Pyrrhalta viburni second and third instar larva
9005046 viburnum leaf beetle Pyrrhalta viburni closeup of a second instar larva
9005047 viburnum leaf beetle Pyrrhalta viburni typical feeding damage by adult on arrowwood viburnum
9005048 viburnum leaf beetle Pyrrhalta viburni on arrowwood viburnum berry
9005049 viburnum leaf beetle Pyrrhalta viburni egg masses on a twig
0002048 legless reed mealybug Chaetococcus phragmitis overwintering under leaf sheath.
0002032 black-margined loosestrife beetle Galerucella calmariensis defoliated purple loosestrife plant surrounded by non-attacked jewelweed, Impatians spp.
0002005 milfoil moth Acentria ephemerella winged female underwater in egg laying position at Cornell University Research Ponds
0002004 milfoil moth Acentria ephemerella wingless female and eggs at Cornell University Research Ponds
0022084 black-margined loosestrife beetle Galerucella calmariensis root damage
0022079 black-margined loosestrife beetle Galerucella calmariensis
0002113 bloof-vein moth Timandra griseata
0022083 root-boring weevil Hylobius transversovittatus caused by larvae

Page: