Montana

A native bark beetle responsible for massive die-offs of lodgepole, ponderosa, and whitebark pines across western North America. Climate change has expanded its range northward and to higher elevations. Outbreaks have affected tens of millions of acres.

Affecting 9 regions

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

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 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 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

A genus of bark beetles that attack stressed and weakened pines throughout North America. While they typically colonize dying trees, drought and overcrowding can trigger outbreaks that kill healthy timber.

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

conical brittlestem observed in the wild. Research-grade iNaturalist observation.

Affecting 5 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

Police Car Moth observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

Black Damsel Bug observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

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

Found trapped inside our screen porch at 10 pm. Took a photo then helped it get outside.

Affecting 12 regions

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

Affecting 9 regions

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

Affecting 27 regions

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

Affecting 3 regions

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

Affecting 6 regions

This is a picture of a Coccinella septempunctata at Fort Armistead Park in Baltimore City, Maryland.

Affecting 30 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

Soft-lined Wave observed in the wild. Research-grade iNaturalist observation.

Affecting 2 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

Greater Sulphur-cup Lichen observed in the wild. Research-grade iNaturalist observation.

Affecting 1 region

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

Affecting 10 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