The new invasive insect recently identified in North Carolina is the elm zigzag sawfly.
Understanding the Elm Zigzag Sawfly in North Carolina
This emerging pest, scientifically known as Aproceros leucopoda, is a concerning addition to the state's invasive species list. Originating from East Asia, the elm zigzag sawfly was first detected in the United States in 2021 and has since spread to five eastern states, including North Carolina. Its presence is actively being tracked by researchers to assess its potential impact on local ecosystems, particularly its host, the elm tree.
Key Characteristics and Spread
The elm zigzag sawfly is recognizable by the distinct feeding damage its larvae cause on elm leaves, creating a unique zigzag pattern. This specific feeding behavior makes it relatively easy to identify its presence.
Here are some key facts regarding this new invasive insect:
| Characteristic | Detail |
|---|---|
| Common Name | Elm Zigzag Sawfly |
| Scientific Name | Aproceros leucopoda |
| Native Region | East Asia |
| First U.S. Detection | 2021 |
| Current U.S. Spread | Detected in five eastern states, including North Carolina |
Ecological Implications
As an invasive species, the elm zigzag sawfly poses a significant threat to elm trees. While the long-term ecological impact in North America is still being evaluated, high populations of this sawfly can lead to defoliation, potentially weakening host trees and making them more susceptible to other stressors or diseases.
- Host Trees: Primarily targets elm trees (Ulmus species).
- Damage: Larvae consume elm leaf tissue, leaving behind a characteristic zigzag pattern of skeletonization.
- Monitoring Efforts: Researchers and state agencies are closely monitoring its spread and population dynamics to understand its potential economic and ecological effects and to develop effective management strategies. Further information on ongoing tracking efforts can often be found through university extension programs and state agriculture departments, such as those discussed by NC State News.
