Following are images from the Extension Nursery, Landscape, & Turf Team Archive.

• Yellowneck caterpillars feeding on birch leaves.
• Gypsy moth mature larva on oak bark.
• Fall cankerworm larva.
• European pine sawfly larvae feeding on Mugo pine.
• European pine sawfly egg scars on Scotch pine needles.
• European pine sawfly male and female.
• Japanese beetle adults skeletonizing a birch leaf.
• Elm leaf beetle larvae skeletonizing an elm leaf.
• Oak slugs skeletonizing an leaf.
• Black vine weevil adult with typical notch chewed out of leaf.
• Leafcutter bee damage to ash leaves.
• Flea weevil adult with typical shot holes in leaf.
• Oak shothole leafminer adult feeding and oviposition damage.
• Yellow poplar weevil adult ovipositing on sweetbay magnolia leaf.
• May/June beetle adult on birch leaves.
• Bagworm bag attached to a birch branch.
• Oak leafroller nest on leaf.
• Oak leaftier larvae exposed by pulling two oaks leaves apart.
• Eastern tent caterpillars on a small nest in a crabapple tree.
• Fall webworm nest being formed in a crabapple.
• Fall webworm adult.
• Mimosa webworm damage to honeylocust trees.
• Japanese beetle white grub in soil.
• Black vine weevil larvae and adult near the stem of a small yew.
• Birch leafminer early mines.
• Birch leafminer adult ovipositing in leaf.
• Holly leafminer damage and mines.
• Boxwood leafminer "blistering" on the leaf.
• Boxwood leafminer larvae and pupae.
• Pine needleminer damage to red pine needle.
• Spruce needleminer damage.
• Locust borer adult.
• Elm borer larva.
• Bronze birch borer adult searching for egg laying site on birch bark.
• Bronze birch bark adult emerging.
• Twolined chestnut borer adult.
• Flatheaded apple tree borer larvae.
• Elm bark beetle female and male.
• Pine bark beetles inside their brood chamber.
• Peach tree borer adult emergence holes at the base of a purple leafed plum tree.
• Peach tree borer larva under the bark of a sand cherry.
• Lilac-ash borer adult.
• European pine shoot moth damage to pine candles.
• European pine shoot moth adult.
• Pear thrips nymphs on sugar maple leaf.
• Fourlined plant bug nymph and typical damage on developing leaves.
• Lace bug adults, nymphs and "tar spots."
• Ash leaf bug adult.
• Azalea lace bug nymphs and damage.
• Periodical cicada adult.
• Pine spittlebug masses on mugo pine branches.
• Treehopper nymph on branch.
• Fulgorid plant hoppers on crabapple branch.
• Sycamore leafhopper adult.
• Rose leafhopper nymph.
• Boxwood psyllid nymph and typical cupped leaves.
• Rose aphids on rose bud.
• Beech blight aphids.
• Overwintering eggs of the birch leaf aphid.
• Pine bark adelgids on white pine branch.
• Taxus mealybugs on branch.
• Euonymus scale females, males, and crawlers.
• Pine needle scales and settled crawlers on needles.
• Oystershell scales on cotoneaster branch.
• Obscure scale on red oak branch.
• European fruit lecanium scales on branch.
• Striped pine scale adult females and crawlers attached to needles.
• Magnolia scale adult females and crawlers on branch.
• Twospotted spider mite stages on underside of leaf.
• Typical bronzing of spruce foliage from feeding of the spruce spider mite.
• Spruce spider mites and eggs on Colorado spruce shoot.
• Hemlock rust mites, an eriophyid mite.
• Maple bladdergall mite galls on silver maple leaf.
• Old eastern spruce gall adelgid galls on spruce.
• Eastern spruce gall adelgid overwintered females at base of bud.
• Succulent oak gall on red oak leaf.
• Gall wasp adult ovipositing on oak leaf.
• Oak horned-beak gall on branch being attended by ants.
• Spiny soldier bug (stink bug) feeding on safly larva.
• Syrphid (hover fly) adult laying eggs in aphid colony.
• Syrphid fly larva.
• Lady beetle adult.
• Lady beetle larva.
• Green lacewing adult.
• Aphid "mummy."
• Chalchid wasp laying eggs in whitemarked tussock moth cocoon.
• The Pathogen: Timing is Everything.
• The Pathogen: Spread of Inoculum.
• The Environment: Rose Blade Spot.
• The Host Plant: Apple Scab Succeptibility
• Apple scab: resistant vs. susceptible.
• Powdery mildew: London planetree.
• Powdery mildew: deciduous azalea.
• Downy mildew: cranberrybush viburnum.
• Rust disease: cedar apple rust on juniper.
• Rust disease: cedar hawthorn rust on hawthorn.
• Rust disease: cedar quince rust.
• Rust disease: cedar quince rust on hawthorn.
• Leaf spots: tar spot and Phyllosticta leaf spot on maple.
• Leaf spots: frogeye leaf spot on crabapple.
• Leaf spot: oak leaf blister.
• Leaf blight: anthracnose on sycamore.
• Leaf blight: anthracnose on ash.
• Leaf blight: anthracnose on white oak.
• Leaf blight: antracnose on maple.
• Diagnostic comparison: physiological leaf scorch on maple.
• Leaf and stem blight: dogwood anthracnose.
• Leaf and stem blight: dogwood anthracnose.
• Leaf and stem blight: dogwood anthracnose.
• Leaf blotch disease: Guignardia leaf blotch on Aesculus.
• Vascular wilt: Verticillium wilt on maple.
• Cane canker on rose.
• Fruit disease: scab on Pyracantha.
• Diplodia tip blight on pine.
• Diplodia tip blight on pine.
• Phomopsis twig blight on juniper.
• Phomopsis twig blight on juniper.
• Crown gall on Euonymus.
• Fireblight on crabapple.
• Nutrient deficiency: iron chlorosis.
• Moisture excess: "wet feet on Taxus."
• "Wet feet on Taxus": the result.
• Moisture excess: poor drainage.
• Girdling injury: the result.
• Girdling injury: the cause.
• Physical injury: weed eater damage.
• Physical injury: rubber hoses.
• Site selection: salt injury.
• Site selection: salt injury.
• Site selection: heat stress.
• Timinng is everything.
• Overmulching: the problem.
• Overmulching: the solution.