PestHigh Severity

Citrus Longhorned Beetle

Anoplophora chinensis

An extremely destructive invasive beetle from Asia that poses an unprecedented threat to North American trees. This pest attacks healthy trees and has no natural enemies, threatening urban landscapes, forests, orchards, and wildlife habitat. Each female can lay up to 200 eggs in tree bark.

Peak Season: Adult emergence: Peak during warm monthsEgg laying: Throughout adult activity periodLarval development: 12-18 months within treesYear-round activity: In suitable climatesDetection period: When adults are most active
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Citrus longhorned beetle adult and damage

Identification & Symptoms

What to Look For

Round exit holes in bark approximately 3/8 inch diameter
Sawdust-like frass accumulating around tree base
Wet sap weeping from egg-laying sites
Yellowing and wilting of branches
Crown dieback in heavily infested trees
Tunnel systems visible in exposed wood

Potential Damage

Complete tree mortality from extensive boring damage
Structural weakness from larval tunneling
Girdling of branches and main trunk
Economic losses in commercial orchards
Ecological impact on native forest ecosystems
Threatens endangered wildlife habitat

Lifecycle

Complete development from egg to adult takes 12-18 months. Females lay up to 200 eggs individually in bark. Larvae hatch and chew tunnels into the tree, pupating within these tunnels. Adults emerge and mate, continuing the cycle. Multiple overlapping generations possible.

Professional Treatment Approach

1

Immediate detection and reporting to agricultural authorities

2

Imisol treatments for at-risk high-value trees

3

Imicide applications during adult emergence periods

4

Quarantine measures to prevent spread

5

Professional monitoring and management programs

Recommended Mauget Products

Imisol

Professional-grade treatment specifically effective against citrus longhorned beetle.

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Imicide

Professional-grade treatment specifically effective against citrus longhorned beetle.

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Need Professional Diagnosis?

Our certified arborists can help you accurately identify tree problems and develop an effective treatment plan using Mauget's proven injection systems.

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