Insects Index
Asian Longhorned Beetle
Anoplophora glabripennis
Elm Zigzag Sawfly
Aproceros leucopoda
Emerald Ash Borer
Agrilus planipennis
Fall Cankerworm
Alsophila pometaria
Forest Tent Caterpillar
Malacosoma disstria
Hemlock Woolly Adelgid
Adelges tsugae
Ips Bark Beetles
Ips spp.
Sirex Woodwasp
Sirex noctilio
Southern Pine Beetle
Dendroctonus frontalis
Spongy Moth
Lymantria dispar
Spotted Lanternfly
Lycorma delicatula
Matt Bertone, North Carolina State University

Elm Zigzag Sawfly

Aproceros leucopoda

The elm zigzag sawfly (EZS) is a small (7-8 mm long), invasive, stingless wasp-like fly originally from East Asia. It was first observed in North America in 2020 in Quebec, Ontario, Canada and in the United States in 2021 in Virginia, before further observations in New York, Maryland, and North Carolina. EZS larva are green in color with a black band on their head and develop T-shaped black markings on their second and third pair of legs. EZS larvae defoliate native and nonnative elm (Ulmus) species and create a characteristic zigzag pattern between leaf veins. Large defoliation events can lead to weakened trees and predispose them to other pests and diseases, before leading to tree death if defoliation occurs several years in a row. With EZS being a relatively new pest, not much is known about the ecological and economic impacts it may have, or management techniques for this species.

There are no Publications at this time.

New Pests, New Problems

Dr. Kelly Oten, 2023
Elm Zigzag Sawfly Found in NC for the First Time  Dr. Kelly Oten and Dr. Matt Bertone, 2022

Elm Zigzag Sawfly 

Katy Crout and Dr. David Coyle, 2023
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