Citrus longhorned beetle - Anoplophora chinensis
Effective: April 29, 2021
Taxonomic Position: Coleoptera : Cerambycidae
Pest Type: Insects
Pest Code (NAPIS): INALRBA
This pest is a member of the following surveys: Exotic Wood Borer / Bark Beetle
These Approved Methods are appropriate for: 2025, 2024, 2023, 2022
Pest Information
CAPS Pest Datasheet: https://download.ceris.purdue.edu/file/4084
Pest Tracker: https://pesttracker.org/pest/INALRBA
Hosts Identified in the CAPS Host Matrix:
Citrus
Human and Animal Pathogens Transmitted:
Not known to transmit any human or animal pathogens.
Pest Pathogens and Organisms Vectored:
Not known to vector any pathogens or be associated with other organisms.
Survey

Approved Method(s)
Method Detail NAPIS Survey Method
Visual See the Survey Recommendations below for more details 3031 - General Visual Observation
Trap Spacing:
When trapping for woodborers or bark beetles, separate traps with different lure combinations by at least 30 meters (98 feet).

Survey Recommendations
The following are recommendations for executing the survey using the approved methods for pest surveillance. The recommendations are developed through literature review and consultation with subject matter experts.
Climate Suitability Map:
A Climate suitability map is now available. This survey should only be considered in the states with appropriate climate conditions and suitable hosts for this insect.

The map was produced by the SAFARIS Team. SAFARIS is a modeling framework that enables PPQ to quickly respond to emergencies, efficiently survey for pests, and assess potential pest impacts by collecting critical geospatial data and developing predictive models. SAFARIS is developed and maintained by the NC State University, Center for Integrated Pest Management (CIPM) with support from PPQ PPRA.
Target Life Stage: Adult
Time of Year to Survey:
Surveys should be conducted when adults are active. The peak adult active period for A. chinensis is May through July; however, adults can be found from April to December depending on local climate.
Survey Site Selection:
Survey for A. chinensis near plant nurseries, garden centers, and areas with imported wood packing material. This species has been intercepted in bonsai trees and wood products including logs, lumber, wood packing materials, and pallets that were made from infested trees. Focusing survey efforts around these areas in the pathway will aid in early detection.
Site Inspection:
The trunks of host plants should be thoroughly inspected for exit holes, frass around the base of the trunk, active adults, and T-shaped oviposition scars. Additionally, dead and dying young host trees should be closely inspected for the presence of all life stages of A. chinensis. See the CAPS Pest Datasheet for images of signs.
Sample Collection Instruction:
Samples of adult A. chinensis should be collected and stored in vials in 70% ethanol for identification. All life stages of suspected A. chinensis can be stored in 70% ethanol for long periods of time; however, the color will fade gradually.
Key Diagnostic or Identification

Approved Method(s)
ID/Diagnostic:
The approved diagnostic method is morphological identification. Identification must be completed by a USDA National Identification Services-approved taxonomist with an expertise in Cerambycids.
Mistaken Identities:

Anoplophora chinensis resembles A. glabripennis, the Asian longhorned beetle. However, A. chinensis has dozens of tubercles (small wart-like projections) at the base of the elytra, which are lacking in the Asian longhorned beetle. This character is clearly visible with a 10x hand lens.


Anoplophora chinensis may also be confused with Monochamus scutellatus, the whitespotted sawyer, and other Monochamus species that are present in much of the United States.

References

If you are unable to find a reference, contact STCAPS@usda.gov. See the CAPS Pest Datasheet for all references.