Hemlock wooly adelgid is a dangerous pest of hemlock trees.

The clitellum or collar of the jumping worm goes all the way around the body and is smooth. The worms are very active and have a sheen to them.  When disturbed, the jumping worm (amyhthas agretis) will actively trash and flip, slither snake-like, and may shed their tails.
Image by Wisconsin Department of Natural Resources

Jumping worms (amynthas agretis) showing up locally

 A large poison ivy vine growing up a tree.

70% of the US population is sensitive to Poison ivy

Invasive & Nuisance Species

Invasive species are non-native plants and animals that spread rapidly causing ecological and economic harm. Common examples are the emerald ash borer, Norway maple, and Asian clam. Invasive species are usually spread by humans. Once established, they become increasingly difficult to manage. Early detection of invasives is key to containment and practical management.

Nuisance species may be native or non-native, and may cause ecological and economic harm. Common examples are poison ivy and Canadian geese.

Contact

Connor Young
Team Leader, Environment and Natural Resources
chy32@cornell.edu
518-622-9820 x113

Last updated July 26, 2019