Insect
Eastern Twig Girdler
Oncideres cingulataAlso known as Twig Girdler, Pecan Twig Girdler
Eastern twig girdlers are remarkable wood-boring beetles known for their precise pruning behavior. In late summer and autumn, female beetles use their sharp mandibles to chew a deep, continuous groove around living hardwood branches before laying eggs inside the dying tip. This girdling stops the flow of sap, creating the dry, dead wood required for the larvae to hatch, feed, and safely overwinter until spring emergence.
Wood-boringNocturnalForest
—observations
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—peak records
Not EvaluatedConservation statusIUCN Red List categoriesLCNTVUENCREWEXNot Evaluated — not placed on the risk ladderRed List categories, explained →
Diet & preyPecan, Hickory, Oak
Predators
- Downy Woodpecker
- Parasitoid Wasps
- Tufted Titmouse
ThreatsPesticide application, grove management, and habitat loss
HabitatsDeciduous woodlands, pecan groves, and suburban parks
Life span1 year
Classification
- FamilyCerambycidae
- SpeciesOncideres cingulata
Range data is not available yet.
Interaction riskLow
- Low
- Moderate
- High
- Very high
- Why interaction risk is low
- Safe to observe at a normal distance.
Responsible observation
- Look for Clues: Check the ground beneath hickory and pecan trees in autumn for cleanly severed twigs with smooth, beveled edges.
- Night Spotting: Use a flashlight to search tree branches after dark when adult beetles are actively moving and feeding.
Host Plant (c) Eran Finkle, some rights reserved (CC BY) · cc-by
Host Plant (c) Douglas Goldman, some rights reserved (CC BY-SA), uploaded by Douglas Goldman · cc-by-sa
Predator "Male Downy Woodpecker" by ShenandoahNPS is marked with Public Domain Mark 1.0. To view the terms, visit https://creativecommons.org/publicdomain/mark/1.0/. · cc0
Close Relative (c) Sue Carnahan, some rights reserved (CC BY), uploaded by Sue Carnahan · cc-by
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