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The Japanese beetle is native to Japan. It was first discovered in 1916 but was probably introduced around 1911. It was introduced possibly in the soil of imported ornamental plants. This beetle is a destructive pest of turf, landscape plants, and crops; adults feed on the foliage and fruits of several hundred species of trees, shrubs, vines, and crops, while larvae feed on the roots of grasses and other plants.

The New Guinea flatworm was first found in Florida in 2012. It's method of introduction is unknown, although land flatworms have been known to be introduced in the soil of imported plants. New Guinea flatworms are predators of land snails.

The northern giant hornet is native to Asia and was first detected in Washington State in 2019. It possibly was introduced through the illegal importation of live specimens for food and medicinal purposes. This hornet is a pest of honey bees that can cause the complete loss of colonies.

Oak wilt is a fungal disease of oaks that can rapidly kill susceptible species (particularly red oaks). The origin and means of the introduction of oak wilt are unknown. The disease was first discovered in 1942 and is currently only found in the U.S., but it may have originated in Mexico, Central America, or South America.

The pale cyst nematode is native to South America. It was first discovered in Idaho in 2006. It is a major pest of potatoes and related crops. Uncontrolled infestations can reduce crop yields by 80%.

Palmer amaranth is native to Southwestern U.S. and was first reported outside of its native range in Virginia in 1915, but was not a significant weed in the Southeast until the 1990s. This species is one of the most economically important weeds of corn, cotton, and soybean; some populations are resistant to glyphosate and other herbicides.

Red-bellied pacu is native to South America. Individual specimens have been caught since the 1960s, but no reproducing populations have yet become established in the U.S. This species was probably introduced through aquarium releases or fish farm escapes. The environmental impact is unknown.

Red-eared slider is native to the Mississippi River drainage. Throughout its nonindigenous range, this species is introduced primarily through pet releases and escapes since the 1930's. This species may compete with native turtle species, although despite its widespread occurrence little is known of the impact on indigenous ecosystems.

The spotted lanternfly is native to China. It was first detected in 2014 (but appeared to have been present in the U.S. for 2-3 years) and poses a serious economic threat to multiple U.S. industries, including viticulture, fruit trees, ornamentals and timber.

Spotted wing drosophila was first discovered in Hawaii in the 1980's and in the continental U.S. in 2008. It was possibly introduced in fruits imported from Asia. This insect is a pest of unripe berries and stone fruits capable of causing significant economic losses.

Sweet orange scab is native to South America. It was introduced to the U.S. in 2010, most likely through the movement of infected nursery stock. It's a fungus affecting the fruit of sweet orange and mandarin cultivars.

The tomato leaf miner was originally thought to be native to Central America, but now believed to have originated in Peru. This pest is not yet present in the United States. It may be transported through the fruit trade and it's impact caused yield losses of up to 100% in tomatoes.

The honey bee varroa mite was first detected in Asia and was introduced to the U.S. in 1987. It's means of introduction was via commercial transportation of infested bee colonies. The varroa mite is a serious worldwide pest of the European honeybee and is a major cause of colony collapses.

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Provides detection history, images and videos, environmental assessments, state plant regulatory official letters, state information (where quarantined), and news and resources.

The spotted lanternfly, first sighted in Pennsylvania, is an invasive pest to the U.S. See this photo essay to learn more about ARS's research efforts.

USDA scientists have discovered that the spotted lanternfly, an invasive threat to fruit crops and many trees, may have an Achilles heel – an attraction to vibration. A native of China, the insect was discovered in Pennsylvania in 2014 and has since spread to 13 other states. Though beautiful as an adult, the insect is a voracious eater that feeds on woody and ornamental trees as well as a wide variety of crops and plants. Left unchecked, Pennsylvania alone could lose hundreds of millions of dollars and thousands of jobs.

Richard Mankin, an entomologist with the USDA Agricultural Research Service’s Center for Medical, Agricultural, and Veterinary Entomology in Gainesville, FL, and colleagues found a new way to potentially corral and control the pests. Their research was published in the Journal of Economic Entomology.

Deceptively delicate and fragile in appearance, the Eurasian watermilfoil forms thick mats in shallow areas of a lake, quickly growing and spreading to block sunlight, killing off native aquatic plants that fish and other underwater species rely on for food and shelter. In North America, the plant threatens the diversity and abundance of native plants as well as the ecological balance of lakes and ponds, which in turn adversely affects recreational opportunities. If left unchecked, invasive watermilfoil will spread through a lake, or even to other lakes by transmission. An expert team of USDA Forest Service divers with invasive species and aquatics expertise is focused on rooting out the plant.

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