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Home / Invasive Species Resources

Invasive Species Resources

Provides access to all site resources (alphabetically), with the option to search by species common and scientific names. Resources can be filtered by Subject, Resource Type, Location, or Source.

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Pennsylvania Fish and Boat Commission.

The Pennsylvania Fish and Boat Commission (PFBC) is urging anglers to report and dispose of any invasive Northern Snakehead fish that may be caught in the lower Susquehanna River. This advisory follows the documented movement of 21 Northern Snakeheads past the Conowingo Dam into the Conowingo Pool, a 14-mile-long section of the Susquehanna River located between the Conowingo Dam in Maryland and the Holtwood Dam in Pennsylvania. Anglers are reminded that possession, transport, and importation of a live snakehead is unlawful in both Pennsylvania and Maryland. Any of these invasive fish that are caught should be killed and disposed of properly or consumed. Anglers who suspect they have caught a snakehead are encouraged to NOT release it, and report it to the PFBC at (610) 847-2442 or by sending an email to tgrabowski@pa.gov. For more information on Northern Snakeheads in Pennsylvania, including an identification guide, visit the PFBC snakehead resource page.

Vermont Department of Health.

State Agriculture and Health officials announced that the Asian Tiger mosquito (Aedes albopictus) has been identified for the first time in Vermont. This normally tropical/subtropical species is a known disease vector for Zika, chikungunya and dengue viruses, infecting humans in countries where these diseases are present. The mosquitoes found in Vermont do not currently carry these viruses. Natalie Kwit, public health veterinarian with the Vermont Department of Health, said that while the discovery of Aedes albopictus in the state is notable, Vermont's climate is currently inhospitable for the mosquito species for most of the year, making it unlikely they will be spreading new diseases here any time soon. "The diseases they can carry are not endemic to our area, and in fact are rarely found anywhere in the United States," said Kwit. For more information, visit Vermont's Mosquito Surveillance Program.

New York State Department of Environmental Conservation.

The New York State Departments of Environmental Conservation (DEC) and Agriculture and Markets (DAM) today announced that although freezing temperatures will kill off adult spotted lanternflies (SLF), the public is urged to stay vigilant and report overwintering egg masses. In the fall, SLF will lay their eggs on any flat surface such as vehicles, firewood, outdoor furniture, stone or other items which can be inadvertently transported to new areas. If this insect becomes established in New York, it could impact New York's forests, agricultural and tourism industries. "To date, there has not been a documented spotted lanternfly infestation in New York, but I encourage the public to stay aware and be ready to report egg masses or other signs of this insect to help prevent infestations," said DEC Commissioner Basil Seggos.

Assistance from the public is crucial in limiting the movement of SLF and protecting New York's natural resources. DEC and DAM are urging the public to inspect outdoor items such as vehicles, outdoor furniture and camping equipment for egg masses or insects, and report any sightings by sending photos and location information to spottedlanternfly@dec.ny.gov. Anyone that visits locations of SLF quarantines in other states should look for and remove insects and egg masses on items before leaving those areas. For more information, please visit DEC's spotted lanternfly webpage.

Louisiana Department of Agriculture and Forestry.

The emerald ash borer, a severe insect pest of ash trees, was confirmed in Webster Parish in February 2015, making Louisiana the 25th state to confirm the presence of this beetle. In 2014, the LDAF started a "Don’t Move Firewood" campaign which is geared toward educating people about the risks of transporting pests to other locations where some can do harm. It is best to purchase firewood not more than 10 miles from where it will be burned.

State of Wyoming.

Reflecting his goal of making Wyoming a national leader in the battle against invasive species, Governor Mark Gordon announced today he has launched an initiative to address terrestrial invasive plants in the state. The initiative will be comprised of two teams -- a Policy Team and a Technical Team, each comprised of local, state and federal government representatives, private citizens representing industry and agricultural groups, as well as scientists and practitioners. The two teams will work cooperatively to develop recommendations for the Governor in the context of a large-scale strategy for invasive species management. Terrestrial invasive species represent a significant threat to Wyoming’s forests, rangelands and agricultural lands with varying levels of impact.

Office of the Governor (Washington).

Washington Governor Jay Inslee has issued an emergency order (PDF| 174 KB) to address the exponential increase in the European green crab population within the Lummi Nation’s Sea Pond and outer coast areas. The European green crab is a globally-damaging invasive species that, if they become permanently established, will particularly harm endangered species, impact resources that are part of the cultural identity of the tribes and native peoples, and affect small businesses.

Vermont Agency of Agriculture, Food, and Markets.

Many people in Vermont are encountering gypsy moths (GM) for the first time. This invasive species arrived in the United States over 100 years ago and has been expanding its range ever since. They can be significant defoliators (leaf eaters) of trees and shrubs. They prefer oak trees, but when there are a lot of caterpillars around they will eat any type of leaf, including maple and pine. Vermont has not seen an outbreak of GM since 1991. At that time a fungus called Entomophaga maimaiga became prevalent in the area and significantly decreased the GM population. But the dry weather that we’ve experienced over the last few years has not been good for fungi, and the absence of fungi has allowed the GM numbers to increase.

Virginia Department of Agriculture and Consumer Services.

In May of 2018, the National Veterinary Services Laboratory in Ames, Iowa confirmed the finding of the Haemaphysalis longicornis tick (otherwise known as the East Asian or Longhorned tick) in Virginia. It was previously unknown in the state, but since then has been detected in 24 counties, mostly in the western part of the state. "The tiny tick can appear on cows, horses and other livestock," said State Veterinarian Dr. Charles Broaddus. "In addition to being a nuisance, they also can be a health risk, especially to newborn or young animals." If you believe you have found the Longhorned tick, notify your local office of the Cooperative Extension Service.

Minnesota Department of Natural Resources.

Beginning Monday, Oct. 25, the Minnesota Department of Natural Resources will lead a second intensive invasive carp removal effort in Pool 8 of the Mississippi River near La Crosse, Wis. Thirty-four silver carp were captured in Pool 8 during the first interagency carp removal operation in April. The innovative Modified Unified Method (MUM) combines netting and herding techniques to drive and concentrate invasive carp from a large area of water into a small zone for removal. The DNR is conducting this work in partnership with the Wisconsin Department of Natural Resources, the U.S. Geological Survey (USGS) and the U.S. Fish and Wildlife Service.

Anglers are reminded that invasive carp captures must be reported to the DNR immediately. Call 651-587-2781 or email invasivecarp.dnr@state.mn.us. Take a photo and transport the carp to the nearest DNR fisheries office or arrange for it to be picked up by a DNR official.

Virginia Department of Health.

In November of 2017, a tick species previously unknown to the US called Haemaphysalis longicornis, or the Asian longhorned tick, was discovered both on a sheep and in a pasture in New Jersey. Since then, this new tick species has been found in eight additional states, including 17 counties and one city in Virginia.

Michigan Department of Natural Resources.

For landscapes plagued by autumn olive or entangled in oriental bittersweet, a new website offers help identifying and managing woody invasive plants like these. WoodyInvasives.org, developed by the Woody Invasives of the Great Lakes Collaborative, contains a wealth of information about how to distinguish woody invasive species from similar beneficial plants, an interactive map showing how these species are regulated by Great Lakes jurisdictions, detailed management approaches and noninvasive woody plant ideas for gardeners and landscape designers. "We developed the WIGL Collaborative website to help people learn to identify the woody invasive plants around them and to feel empowered to start controlling them on their properties or in their favorite green places," said Clair Ryan, coordinator of the Midwest Invasive Plant Network, the organization leading the effort.

New York State Department of Agriculture and Markets.

The New York State Departments of Agriculture and Markets (AGM) and Environmental Conservation (DEC), and the Office of Parks, Recreation, and Historic Preservation (Parks) today announced an innovative effort to combat the spread of Spotted Lanternfly (SLF) in New York State. A new online interface will allow volunteer members of the public to assist in surveying for SLF and tracking associated data. The program encourages broader surveying for SLF and increased public awareness of this invasive pest, following confirmed finds of SLF in New York State this past fall.

The new initiative, which launched this week, invites volunteers to sign up to survey a specific area, or grid, of land on iMapInvasives. This online, GIS-based data management system is used to assist citizen scientists and natural resource professionals to protect against the threat of invasive species. Volunteers will also enter data from their survey work into iMapInvasives. More information about the program, including upcoming webinars, can be found at https://www.nyimapinvasives.org/slf.

New York State Department of Environmental Conservation.

New York State Department of Environmental Conservation (DEC) Commissioner Basil Seggos announced the release of the DEC-sponsored documentary, Uninvited: The Spread of Invasive Species, via YouTube. DEC's Division of Lands and Forests contracted with the Westfield Production Company to produce this documentary about the significant threat invasive species pose to New York's biodiversity and ecosystems, as well as public health and the State's economy.

New York State Department of Environmental Conservation.

New York State Department of Environmental Conservation (DEC) Commissioner Basil Seggos today encouraged anglers in the Delaware River to be on the lookout for northern snakehead, an invasive fish native to Southeast Asia. A northern snakehead was recently caught in the Callicoon area of the Delaware River. Given the right environmental conditions, this invasive species can prey on and compete with other fish, upsetting the natural balance of local ecosystems. "Northern snakeheads are listed federally as injurious wildlife, and New York State law prohibits their live possession," Commissioner Seggos said. "Any snakehead caught should be killed immediately and not released back into the water." In the event an angler catches a northern snakehead, DEC advises anglers to report the catch to the regional NYS DEC fisheries office, DEC's Invasive Species Bureau at isinfo@dec.ny.gov or (518) 402-9425, or submit a report through iMapinvasives.

Pennsylvania Department of Agriculture.

Pennsylvania Agriculture Secretary Russell Redding today announced that twelve counties have been added to Pennsylvania's Spotted Lanternfly quarantine zone ahead of the 2020 spring hatch. With this addition, the quarantine (PDF | 506 KB) for this invasive pest is now at 26 counties. The new dozen counties are not completely infested, but rather have a few municipalities with a known infestation (PDF | 803 KB) which led to a quarantine being placed on the entire county out of an abundance of caution. Allegheny, Beaver, Blair, Columbia, Cumberland, Huntingdon, Juniata, Luzerne, Mifflin, Northumberland, Perry, and York have been added to the quarantine for 2020. For more information on Spotted Lanternfly in Pennsylvania, visit https://agriculture.pa.gov/spottedlanternfly.

Pennsylvania Department of Conservation and Natural Resources.

Pennsylvania Department of Conservation and Natural Resources Secretary Cindy Adams Dunn announced that the department is launching an effort at nine state parks this summer to help prevent the spread of aquatic invasive species, and get boaters involved in invasive species detection. "Boats, motors, and trailers have ideal hiding spots where species may attach, and be transported to new locations," Dunn said. "Boaters must be involved in helping us protect state park waters from invaders, to benefit our environment and avoid very costly measures to treat lakes once these non-native species take hold." Starting this week, DCNR staff will be doing voluntary boat and trailer checks at boat launches on park lakes, handing out informational brochures and demonstrating how to do an inspection.

Pennsylvania Department of Agriculture.

The PA Department of Agriculture added Japanese Barberry, or Berberis thunbergii, to a list of noxious weeds — plants that cannot be legally sold or cultivated in the state. The popular, non-native, ornamental shrub forms dense, prickly thickets that crowd out plants and disrupt native ecosystems. It is also thought to harbor black-legged ticks that spread lyme disease. The ban on sale and cultivation took effect October 8, 2021. Enforcement of the ban will be phased in over two years to allow time for nurseries to eliminate it from their stock, find non-harmful alternatives, and develop seedless, sterile varieties that pose less threat to the environment and agriculture. Landscape and nursery businesses will receive notices of the timeline, procedures and exemption process for sterile varieties. Property owners should consider eliminating the shrubs on their land.

Effective October 8, 2021, the department added two other plants to the noxious weed list: garlic mustard, Alliaria petiolata, and Japanese stiltgrass, Microstegium vimineum. These plants are generally not sold in nurseries but are invasive and common in Pennsylvania. Landowners with these plants on their property are encouraged to remove them.

Washington State Recreation and Conservation Office. Washington Invasive Species Council.

To help combat the $1.3 billion threat invasive species pose to Washington's economy every year, the Washington Invasive Species Council is inviting the public to the frontlines of its work by detecting invasive species and reporting them on its newly improved WA Invasives app. The free app enables anyone to report a plant or animal by collecting photographs, geographic coordinates, and sighting information. Users recreating in the backcountry also can collect data offline, when cellular service isn't available. The app also acts as digital field guide.

Kansas Department of Wildlife & Parks.

Widespread sampling for invasive crayfish had never occurred in Kansas lakes – that is, until the Kansas Department of Wildlife and Parks (KDWP) recently funded a university project focused on the freshwater crustacean. KDWP's Aquatic Nuisance Species Program and Ecological Services section funded the project with the overarching goal of establishing sampling protocols that could then be used for long-term monitoring of both native and invasive crayfish in Kansas. During capturing efforts at McPherson State Fishing Lake – one of several small waterbodies slated to be inspected in the state – university researchers collected multiple Rusty Crayfish. Rusty Crayfish have not previously been documented in the wild in Kansas, making this official "discovery" the first of its kind.

Anglers, boaters and watersport enthusiasts are encouraged to keep their eyes open for this invasive species, which can be identified by its trademark large, black-tipped claws and rust-colored spots on its upper shell. If one is discovered, freeze it in a sealed plastic bag, note the date and location of capture, and contact KDWP's Emporia Research and Survey Office at (620) 342-0658.

Washington State Department of Agriculture.

Entomologists from the Washington State Department of Agriculture (WSDA) and the U.S. Department of Agriculture (USDA) have confirmed the first report of an Asian giant hornet for 2021. This is the first confirmed report from Snohomish County and appears to be unrelated to the 2019/2020 Asian giant hornet introductions in Canada and Whatcom County.

In 2020, half of the confirmed Asian giant hornet sightings in Washington and all of the confirmed sightings in Canada came from the public. Every suspected sighting in Washington State should be reported to the Washington State Department of Agriculture online at agr.wa.gov/hornets, by emailing hornets@agr.wa.gov, or calling 1-800-443-6684. Suspected sightings in other areas should be reported to the state or province where it suspected hornet was observed.