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Invasive Pests

Threats to Philadelphia:

Emerald Ash Borer

The Emerald Ash Borer is an invasive insect that was first identified in the United States in Detroit around 2002. The insect is a small emeraldy green beetle, approximately 1/2 an inch in length. The Emerald Ash Borer is devastating the ash tree population in the eastern and midwestern United States, and has already killed several hundred million ash trees. The insect was found in Philadelphia in 2016 and will wipe out all of the city’s ash trees over the course of the next five to ten years. Read More Here.

Spotted Lanternfly

The Spotted Lanternfly is a plant hopper native to China, India and Vietnam, and has been introduced in South Korea and Japan. In Korea, where it was first detected in 2004, the Spotted Lanternfly is known utilize more than 70 species, 25 of which also occur in Pennsylvania, including cultivated grapes, fruit trees, and hardwood species. In the U.S., the Spotted Lanternfly has the potential to greatly impact the viticulture (grape), tree fruit, plant nursery and timber industries. This pest poses a significant threat to the state’s more than $20.5 million grape, nearly $134 million apple, and more than $24 million stone fruit industries, as well as the hardwood industry in Pennsylvania which accounts for $12 billion in sales. Read More Here.