Nebraska

A devastating vascular wilt disease spread by elm bark beetles that has killed millions of American elms since the 1930s. The fungus blocks water-conducting vessels, causing rapid wilting. It fundamentally changed the American urban landscape.

Affecting 45 regions

A lethal fungal disease that affects all oak species, with red oaks dying within weeks of infection. It spreads through root grafts between neighboring oaks and via sap-feeding beetles. White oaks are more resistant but not immune.

Affecting 18 regions

A lethal disease of pines caused by the pinewood nematode, which is transmitted by pine sawyer beetles (Monochamus spp.). It causes rapid wilting and death of susceptible pine species, particularly non-native Scots pine and Austrian pine. The nematode clogs resin canals and destroys cells lining them, leading to cessation of resin flow and rapid desiccation. Trees typically die within weeks to months of symptom onset.

Affecting 19 regions

A bacterial disease that primarily affects members of the rose family, including apple and pear trees. It can destroy entire orchards in a single season. Bacteria spread rapidly during warm, wet spring weather through blossoms and wounds.

Affecting 32 regions

A common fungal disease of spruce trees, especially Colorado blue spruce, throughout the Midwest and Northeast. The fungus infects current-year needles through stomata, causing them to turn purple-brown and drop prematurely. Inner and lower branches are affected first because humidity is higher there, and the disease progresses upward and outward over successive years. Severely affected trees may retain only the current year's needles at branch tips.

Affecting 25 regions

A fungal disease of spruce very similar in appearance to Rhizosphaera needlecast but caused by a different fungus. Often occurs alongside Rhizosphaera. It has become increasingly recognized as a major cause of spruce needle loss, particularly on Colorado blue spruce. Diagnosis requires microscopic examination to distinguish from Rhizosphaera.

Affecting 20 regions

A common fungal disease of spruce and other conifers that causes branch dieback, typically starting from the lowest branches and progressing upward. Colorado blue spruce and Norway spruce are especially susceptible. The fungus enters through wounds or stressed tissue. White resin bleeding on bark is a hallmark sign. Stressed trees are most vulnerable.

Affecting 25 regions

A soilborne fungal disease that affects hundreds of plant species including maples, elms, redbuds, and many other trees. The fungus invades through roots and colonizes the vascular system, blocking water transport. Symptoms often appear suddenly on individual branches. Maples are particularly susceptible. Olive-green to brown streaking in the sapwood is diagnostic.

Affecting 27 regions

A native North American wood-boring beetle that attacks birch trees, especially paper birch and European white birch in landscape settings. Larvae feed under the bark in a serpentine pattern, disrupting nutrient and water transport. Dieback starts at the top of the crown and progresses downward, the opposite pattern of many other pests.

Affecting 26 regions

An invasive wood-boring beetle native to Asia that has killed hundreds of millions of ash trees across North America since its discovery in Michigan in 2002. Larvae feed on the inner bark, disrupting nutrient and water transport.

Affecting 36 regions

An invasive beetle introduced to New Jersey in 1916. Adults skeletonize leaves of over 300 plant species while larvae (grubs) damage turf grass roots. They are particularly damaging to linden, birch, and fruit trees.

Affecting 35 regions

A moth whose larvae construct distinctive spindle-shaped bags from silk and foliage fragments. They feed on over 100 species of trees and shrubs, with conifers being most vulnerable since they cannot regrow lost foliage as readily.

Affecting 28 regions

A fungal disease requiring two hosts to complete its life cycle: eastern red cedar (juniper) and apple or crabapple trees. It causes economic losses in apple orchards and aesthetic damage to landscape cedars.

Affecting 34 regions

A group of fungal diseases causing leaf spots, cankers, and shoot blight on many shade trees. Sycamore, dogwood, maple, and oak are commonly affected. Cool, wet spring weather promotes infection of newly expanding leaves.

Affecting 38 regions

A common fungal disease of pines, particularly Austrian and Scots pines in landscape settings. Spores infect new shoots as buds open in spring. Repeated infections progressively kill branches from the bottom of the tree upward.

Affecting 19 regions

A fungal disease of pines that causes premature needle loss and can significantly reduce growth and vigor. It affects many pine species but is especially damaging to Austrian, ponderosa, and Monterey pines. It has increased in severity with climate change.

Affecting 19 regions

Asian Longhorned Beetle Damages hardwood trees by tunneling deep into trunks and branches - identified by USDA APHIS as a pest threat.

Affecting 50 regions

Attracted to light at night. The plant on which the insect is resting (sweet Joe Pye weed) is located beside an exterior light that was illuminated.

Affecting 33 regions

Found alive but in terrible shape. Was swimming around in the water bowl we put out for feral cats here. Also appeared to have had a run in with a spider web, as it had something stuck all over it. Got a lot of suggestions for fungi and parasitoids that target ladybeetles, so maybe its appearance is more a function of a disease or parasite process taking place. It was definitely having trouble getting adound, but could be due to having been in the water for a long time and/or having bits of web

Affecting 41 regions

I was finally able to encounter a female individual of this species - however, she unfortunately appeared to be dying. I initially found her on her back.

Affecting 27 regions

Spent pretty much all day today at the car dealership to get a new vehicle -- sooo, I missed out on a park visit. Anywho, I put up the blacklights in the backyard to see some local bugs. :)

Affecting 26 regions

Heard frantic flapping noise against window glass, opened window and let in moth. It finally settled on trim above inside door where it's rested calmly for past 25 minutes. Guessing female based on wing shape, coloring and position, thinner antennae, and bulkier body/abdomen.

Affecting 28 regions

Observed on a 15 minute walking survey at Kirk Park. This survey is part of the Paired Garden Study project associated with Biodiversity in Urban Gardens (BUG) and is run by the California Native Plant Society. This observation is from the native plant garden. My survey here ran from 4:44PM-4:59PM. More info about BUG is available at the link below (scroll down to Santa Clara Valley Research Project for more info about the Paired Garden study) https://www.cnps.org/education/bug Umbrella projec

Affecting 33 regions

Not sure what this was, at first thought a potato bug, but looking at closer realized it was not. Not the kind of June bug I am used to seeing. Pretty sure this a Ten-lined Beetle, got this photo with my Android camera using the magnifying glass app. Better photo than with my Nikon P950. After reading about this beetle and the Long Haired Beetle, I touched the protonum on this beetle and it is smooth.

Affecting 7 regions

Ultronia Underwing observed in the wild. Research-grade iNaturalist observation.

Affecting 11 regions

Common Eastern Firefly observed in the wild. Research-grade iNaturalist observation.

Affecting 19 regions

Data collected in collaboration with Field Assistant Ryan Brockette & Thionna Strack.

Affecting 18 regions

Cluster of black and orange insects on milkweed plant. Warm, near sunset, slightly overcast.

Affecting 35 regions

Milkweed Tussock Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 17 regions

This is a picture of a Piezogaster calcarator at Leakin Park in Baltimore City, Maryland.

Affecting 6 regions

Strawberry Root Weevil observed in the wild. Research-grade iNaturalist observation.

Affecting 16 regions

We have dozens and dozens of these guys flying around right now. This one climbed onto my hand from a butterfly bush. How cute!

Affecting 19 regions

Osmoderma subplanatum observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Achemon Sphinx observed in the wild. Research-grade iNaturalist observation.

Affecting 8 regions

Twin-spotted Sphinx observed in the wild. Research-grade iNaturalist observation.

Affecting 4 regions

Originally collected at the University of Kentucky Arboretum alongside a Goldenrod Soldier Beetle.

Affecting 21 regions

Cicindela formosa formosa observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Several days of hot record setting weather in Jefferson County. Co. Painted Ladies are in flight at the base of North Table Mountain. This butterfly was much larger than most of what I've seen here...in past two days. Migrating or overwintering?

Affecting 21 regions

Silver-spotted Skipper observed in the wild. Research-grade iNaturalist observation.

Affecting 14 regions

Twice-stabbed Stink Bug observed in the wild. Research-grade iNaturalist observation.

Affecting 20 regions

I've only ever seen dead specimens of this species around. This is by far the largest cicada I've ever seen!

Affecting 7 regions

Swamp Milkweed Leaf Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 27 regions

Punctured Tiger Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 27 regions

Flew into garage after dark when we were organizing. Rescued to the outside. Stunning moth!

Affecting 20 regions

Observed: Two milkweed bugs mating on a dried, and brown native milkweed plant. Logged as “Small Milkweed Bug” due to INaturalist’s recommendation Observed at 6:25 pm, approximately 40 minutes before sunset, in an east facing, fully shaded milkweed host garden on a dead browned native milkweed plant. When first observed, they were not responsive to my presence. At this time, I observed them moving together, secured by the end of their abdomens. They engaged in a movement that was similar to pl

Affecting 34 regions

This is a picture of a Megalotomus quinquespinosus at Fort Armistead Park in Baltimore City, Maryland.

Affecting 5 regions

Spotted Pink Lady Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 25 regions

Three-ribbed Darkling Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 4 regions

Big Sand Tiger Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

Sandy Tiger Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

A screenshot from my friend @west87363 ‘s video. We observed the same individual insect but I wasn’t able to capture it on camera like he did.

Affecting 31 regions

Walnut Lace Bug observed in the wild. Research-grade iNaturalist observation.

Affecting 2 regions

What a great evening with around 125 folks at Spring Creek Forest Preserve to celebrate moth week. Great fun and lots of excitement to see some bugs. :)

Affecting 21 regions

Dark Flower Scarab observed in the wild. Research-grade iNaturalist observation.

Affecting 8 regions

Dryad's Saddle observed in the wild. Research-grade iNaturalist observation.

Affecting 16 regions

Eleodes carbonaria obsoleta observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Golden-eye Lichen observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

Festive Tiger Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 4 regions

Spent pretty much all day today at the car dealership to get a new vehicle -- sooo, I missed out on a park visit. Anywho, I put up the blacklights in the backyard to see some local bugs. :)

Affecting 26 regions

At UV Lights National Moth Week 2026 - pretty light on moths so far, but lots of other stuff.

Affecting 22 regions

Goldenrod Soldier Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 22 regions

Was following this beetle, and he lead me to dead mouse and crawled inside. Pretty disturbing

Affecting 3 regions

Another mothing try at Green Acres Farm- fortunately not windy this time, so a few little guys came out to the light, along with some stink bugs. It was still hot even after the sun went down and it got dark, and it is very dry everywhere.

Affecting 21 regions

Coppery Leafhopper observed in the wild. Research-grade iNaturalist observation.

Affecting 23 regions

Clover Looper Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

Early was stationary on Lima bean leaf, then on this particular Zinnia flower, nectaring, for a long while. Lots of Common and Butterfly milkweed flowers nearby but went for this zinnia.

Affecting 32 regions

Tomentose Burying Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 17 regions

Marsh Dagger observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

Salt Marsh Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 13 regions

A widespread group of fungal diseases that produce a distinctive white powdery coating on leaves and shoots. It affects hundreds of tree, shrub, and plant species. Unlike most fungi, it thrives in warm, dry conditions with high humidity.

Affecting 49 regions

A broad group of fungal diseases that cause discrete spots on the leaves of deciduous trees. Most are primarily cosmetic and do not seriously harm established trees. They are most common during wet spring and summer weather. Many different fungi cause leaf spots on different tree species.

Affecting 38 regions

A very common and distinctive fungal disease of maple leaves. The raised black spots are dramatic in appearance but the disease is almost entirely cosmetic and does not harm tree health. It is most severe in cool, wet years. The fungus overwinters in fallen leaves.

Affecting 22 regions