Maine

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 fungal disease that functionally eliminated the American chestnut as a canopy tree species in eastern forests by the mid-20th century. Once numbering in the billions, mature American chestnuts are now exceedingly rare. Root sprouts survive but are re-infected.

Affecting 25 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

An emerging disease caused by a foliar nematode first identified in Ohio in 2012. It has spread rapidly through the native range of American beech. Affected trees can decline and die within 6-10 years. No effective treatment exists at scale.

Affecting 12 regions

One of the most widespread and destructive forest diseases in the world, caused by a complex of honey mushroom species. It attacks stressed trees through root contact and can persist in dead stumps for decades, infecting nearby healthy trees.

Affecting 36 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 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

A tiny aphid-like insect native to Asia that feeds on hemlock sap at the base of needles. It has devastated eastern hemlock populations from Georgia to Maine. Trees typically die within 4-10 years of infestation.

Affecting 20 regions

An invasive moth introduced to Massachusetts in 1869. Caterpillars defoliate hundreds of tree species, preferring oaks. Repeated defoliation weakens and can kill trees, especially when combined with drought stress.

Affecting 20 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 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

The most economically important disease of apples worldwide. The fungus overwinters in fallen leaf litter and releases spores during spring rains. Severe infections reduce fruit quality and yield and can defoliate trees by mid-summer.

Affecting 26 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

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

Common Ringlet observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

Two-spotted Grass Bug observed in the wild. Research-grade iNaturalist observation.

Affecting 7 regions

I found this, this morning, on my parents driveway. Does any body know what animal would be able to remove the wings of a Polyphemus Moth (and its pictured antennae) with such surgical precision? There is no evidence of any mastication left behind?

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

One-eyed Sphinx observed in the wild. Research-grade iNaturalist observation.

Affecting 2 regions

dead man's fingers observed in the wild. Research-grade iNaturalist observation.

Affecting 11 regions

Pale Brittlestem observed in the wild. Research-grade iNaturalist observation.

Affecting 8 regions

American Yellow Fly Agaric observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

American Lady observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

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

Affecting 24 regions

Found it crawling on the side of my garage tonight. My patio lights are on. Taken with Iphone.

Affecting 24 regions

crown-tipped coral fungus observed in the wild. Research-grade iNaturalist observation.

Affecting 25 regions

Red-rot Decay Stag Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 9 regions

Poor Man's Licorice observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Trailside on the edge of a field in Kennesaw Mountain National Battlefield. This is growing on an oak log.

Affecting 23 regions

Orange Jelly Spot observed in the wild. Research-grade iNaturalist observation.

Affecting 12 regions

Homaeotarsus bicolor observed in the wild. Research-grade iNaturalist observation.

Affecting 4 regions

Alfalfa Plant Bug observed in the wild. Research-grade iNaturalist observation.

Affecting 14 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 29 regions

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

Affecting 7 regions

Nymphula Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Dark-spotted Palthis Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 12 regions

Cloudy Arches Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Dark-banded Owlet observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

Four-lined Plant Bug observed in the wild. Research-grade iNaturalist observation.

Affecting 8 regions

Frost's Amanita observed in the wild. Research-grade iNaturalist observation.

Affecting 4 regions

Found directly next to trail near downed hardwood logs full of polypores and oyster mushrooms.

Affecting 13 regions

Knotted Wrack observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

bladder wrack observed in the wild. Research-grade iNaturalist observation.

Affecting 9 regions

Io Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 17 regions

Rosy Maple Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 20 regions

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

Affecting 17 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

Japanese Maple Leafhopper observed in the wild. Research-grade iNaturalist observation.

Affecting 11 regions

Northern Red Belt observed in the wild. Research-grade iNaturalist observation.

Affecting 9 regions

small group growing on saw cut oak trunk in upland mesic hardwoods; funnel shaped to rosette growth, with peeling, wavy "petals"; upper surface velvety/finely hairy, concentrically zoned, blues, purplish browns & yellowish browns dominated, whitish at margin in some; lower surface with rounded pores, some becoming elongated & tooth-like, white to pale tan pore surface; rudimentary to no stalk, hairy, attached to wood centrally or laterally

Affecting 28 regions

hemlock varnish shelf observed in the wild. Research-grade iNaturalist observation.

Affecting 9 regions

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

Affecting 10 regions

North American Common Gray observed in the wild. Research-grade iNaturalist observation.

Affecting 7 regions

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

Affecting 20 regions

I believe the host tree species to either be red or black oak, despite the maple saplings at its base, but identification without damaging bark and with no leaves present remains difficult at my current skill level.

Affecting 20 regions

Hooded Tube Lichen observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

Hooded Rosette Lichen observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

brown cobblestone lichen observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Agreeable Tiger Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 7 regions

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

Affecting 21 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

Yellow-fringed Dolichomia Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 15 regions

Large Lace-border Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 13 regions

Double-banded Grass-veneer observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

chicken of the woods observed in the wild. Research-grade iNaturalist observation.

Affecting 17 regions

Common Sunburst Lichen observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

Oriental Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 13 regions

Yellow Patches observed in the wild. Research-grade iNaturalist observation.

Affecting 11 regions

Oak Timberworm observed in the wild. Research-grade iNaturalist observation.

Affecting 8 regions

Three-spined Grass Bug observed in the wild. Research-grade iNaturalist observation.

Affecting 11 regions

Newfoundland chanterelle observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Purple-crested Slug Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

Asian lady beetle with Hesperomyces harmoniae and another bug lurking in the background that I didn’t even notice until I watched the video back

Affecting 13 regions

Black-staining Polypore observed in the wild. Research-grade iNaturalist observation.

Affecting 20 regions

Found growing at base of large maple tree, harvested specimen is 8 inches long, 5 inches wide and 3 inches tall but the stipe extended another 4 inches before being cut. Older and larger specimen was about a foot in diameter. Sulfur scent like chicken of the woods and non-staining white flesh.

Affecting 19 regions

Nipponoserica peregrina observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

Painted Lichen Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 17 regions

Lesser Maple Spanworm Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 11 regions

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

Affecting 1 region

Boxwood Leaftier Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 15 regions

concentric boulder lichen observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Bronze Ground Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 9 regions

Asiatic Garden Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 11 regions

Northern Tooth observed in the wild. Research-grade iNaturalist observation.

Affecting 8 regions

Spiral Wrack observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

lobster mushroom observed in the wild. Research-grade iNaturalist observation.

Affecting 19 regions

Growing on a dead stump under oaks and conifers Found on bond brook recreational trails

Affecting 17 regions

On dead trunk of Holodiscus in thick scrub a few meters from the lake. Soredia along the margins. Lacks lobules.

Affecting 6 regions

Brown Prionid observed in the wild. Research-grade iNaturalist observation.

Affecting 17 regions

American Giant Water Bug observed in the wild. Research-grade iNaturalist observation.

Affecting 11 regions

Global is over and want to continue including drawings just for regular observations with photo as primary. Is this permitted in non- project observations?

Affecting 18 regions

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

Affecting 22 regions

Phaeolus hispidoides observed in the wild. Research-grade iNaturalist observation.

Affecting 13 regions

quince rust observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

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

Affecting 25 regions

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

Affecting 17 regions

Metatropiphorus belfragii observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

Reticulated Net-winged Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 4 regions

Phytocoris tibialis observed in the wild. Research-grade iNaturalist observation.

Affecting 10 regions

Blackening Russula observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

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

Affecting 20 regions

Chicken Fat Mushroom observed in the wild. Research-grade iNaturalist observation.

Affecting 11 regions

Fourteen-spotted Lady Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 13 regions

Mycetina perpulchra observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Elegant Grass-veneer observed in the wild. Research-grade iNaturalist observation.

Affecting 24 regions

chaga observed in the wild. Research-grade iNaturalist observation.

Affecting 7 regions

American Carrion Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 16 regions

Now TELL ME that this isn't a freaking puppy dog. I have cuteness aggression!!!!!

Affecting 18 regions

Roundneck Sexton Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 10 regions

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

Affecting 2 regions

Growing from soil in mixed woods. Stipe staining my fingers yellow. No bruising or staining on any surface. Did not taste.

Affecting 13 regions

Pore surface red bruising black flesh in cap yellow with blue bruising butryriboletus frostii

Affecting 15 regions

Sieve kelp observed in the wild. Research-grade iNaturalist observation.

Affecting 2 regions

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

Affecting 1 region

Praeclara Underwing Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

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

Affecting 11 regions

Ambiguous Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 11 regions

British soldier lichen observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

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

Affecting 13 regions

Lilac-brown bolete observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

Clymene Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 15 regions

Giant Cladonia Lichen observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Black-rimmed Prominent observed in the wild. Research-grade iNaturalist observation.

Affecting 4 regions

Armyworm Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 17 regions

Blushing Rosette observed in the wild. Research-grade iNaturalist observation.

Affecting 10 regions

Common Toadskin Lichen observed in the wild. Research-grade iNaturalist observation.

Affecting 2 regions

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

Affecting 17 regions

Master's Dart observed in the wild. Research-grade iNaturalist observation.

Affecting 8 regions

Relict Rhinoceros Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 14 regions

Purple Arches Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Green Cone-headed Planthopper observed in the wild. Research-grade iNaturalist observation.

Affecting 19 regions

Pink Earth Lichen observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

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

Affecting 16 regions

Northern Dog-day Cicada observed in the wild. Research-grade iNaturalist observation.

Affecting 8 regions

This bug was on a stick I accidentally knocked into the water, and it couldn’t make it to dry land. I waded in and scooped it and put it on this sunny spot. It turns out it has a super bright white belly. I did not photograph it until it was settled, because being knocked into the water seemed like enough trouble. It had a bad day, but it only took about five minutes for it to compose itself and fly away.

Affecting 21 regions

Sumac Gall Aphid observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

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

Affecting 10 regions

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

Affecting 35 regions

Large Maple Spanworm Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 17 regions

These keep showing up on the large birch log - third or perhaps fourth year. I made an adhesive bandage out of a strip of the pore layer and cut up two of the fruit bodies to use to make mushroom paper. Using my hand constantly, the bandage has remained in place for a couple of hours.

Affecting 10 regions

Pale Beauty observed in the wild. Research-grade iNaturalist observation.

Affecting 16 regions

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

Affecting 5 regions

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

Affecting 7 regions

Northern Cinnabar Polypore observed in the wild. Research-grade iNaturalist observation.

Affecting 11 regions

Asian Oak Weevil observed in the wild. Research-grade iNaturalist observation.

Affecting 14 regions

Meal moth observed in the wild. Research-grade iNaturalist observation.

Affecting 20 regions

Smith's Dart observed in the wild. Research-grade iNaturalist observation.

Affecting 2 regions

Zigzag Herpetogramma Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 3 regions

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

Affecting 16 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

Sharp-scaly Pholiota observed in the wild. Research-grade iNaturalist observation.

Affecting 11 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

shaggy scalycap observed in the wild. Research-grade iNaturalist observation.

Affecting 5 regions

devil's dipstick observed in the wild. Research-grade iNaturalist observation.

Affecting 15 regions

This is a picture of a Megacyllene robiniae at Fort Armistead Park in Baltimore City, Maryland.

Affecting 23 regions

Gem Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 9 regions

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

Affecting 8 regions

Gold-striped Leaftier Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 6 regions

A tremendous evening with around 75 folks to celebrate moth week! It was the hottest day of the summer so far, so it was a wonderful treat to look for bugs with so many folks. :) Great night!

Affecting 15 regions

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

Affecting 27 regions

End Band Net-winged Beetle observed in the wild. Research-grade iNaturalist observation.

Affecting 7 regions

Small White observed in the wild. Research-grade iNaturalist observation.

Affecting 16 regions

Oyster Mushroom observed in the wild. Research-grade iNaturalist observation.

Affecting 2 regions

common bird's nest fungus observed in the wild. Research-grade iNaturalist observation.

Affecting 8 regions

Oarweed observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

ash-tree bolete observed in the wild. Research-grade iNaturalist observation.

Affecting 9 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 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