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Asian Citrus Psyllid

Scientific Name

Diaphorina citri Kuwayama, 1908 (ITIS; name is valid but unverified)

Common Name

Asian citrus psyllid (ACP)

Native To
Date of U.S. Introduction

First found in Florida in 1998 (Grafton-Cardwell et al. 2006)

Means of Introduction

Possibly arrived on imported plants (Grafton-Cardwell et al. 2006)


Damages citrus plants by feeding on sap; serves as a vector for citrus greening disease, which causes a decline in citrus production. (Grafton-Cardwell et al. 2006)

Asian citrus psyllid
Image use policy

Adult Asian citrus psyllid, Diaphorina citri, (2-3 millimeters long) on a young citrus leaf


Photo by David Hall; USDA, ARS Photo Library

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  • Coordinated Response to Citrus Greening Disease

    • U.S. Department of Agriculture.

    • USDA established a unified emergency response framework to address Huanglongbing (HLB), a serious disease of citrus that affects several U.S. states and territories. This framework will allow USDA and its many partners to better coordinate HLB resources, share information and develop operational strategies to maximize effectiveness.

  • IDaids for Asian Citrus Psyllid, Vector of Huanglongbing

    • USDAAPHISPPQCPHST. Identification Technology Program.

    • The Asian citrus psyllid (Diaphorina citri), also called the Asiatic citrus psyllid or ACP, is a notorious pest that prefers citrus and closely related plants for hosts, particularly species within the genera Citrus, Citropsis, and Murraya. Although the spread of this vector is a concern, with vigilant scouting for obvious symptoms, and close inspections to detect the pests themselves, we can work together to be proactive in protecting our citrus. Here IDTools presents a set of IDaids that support the detection and identification of the Asian citrus psyllid. Visit Search IDaids to find identification resources for many more plant pests.

  • You Can Help Prevent Citrus Disease - Story Map

    • USDA. Animal and Plant Health Inspection Service.

    • See also: APHIS in Action to explore plant and animal health or wildlife damage management data and Interactive Story Maps

Distribution / Maps / Survey Status


Federally Regulated

  • Citrus Diseases - Federal Quarantines

    • USDA. APHIS. Plant Protection and Quarantine.

    • Contains the legal description of current federal quarantine areas for several citrus pests and diseases (Asian citrus pysllid, citrus black spot,  citrus canker, citrus greening, sweet orange scab),  Users can search by state and pest to determine the quarantine area(s) by state and territories.

  • Citrus Federal Quarantine Boundary Viewer

    • USDA. Animal and Plant Health Inspection Service.

    • Select layer to view quarantine by species (Asian citrus psyllid, citrus black spot, citrus canker,  citrus greening, sweet orange scab).
      See also: APHIS in Action to explore plant and animal health or wildlife damage management data and Interactive Story Maps

  • Citrus Regulated Articles

    • USDA. APHIS. Plant Protection and Quarantine.

    • Contains the requirements for moving fruit, nursery stock, or other regulated articles for several citrus pests and diseases.

  • Domestic Quarantine Notices (Title 7: Agriculture, Part 301) - Citrus Greening and Asian Citrus Psyllid

    • U.S. Government Printing Office. Electronic Code of Federal Regulations.

  • Hungry Pests - Pest Tracker

    • USDA. Animal and Plant Health Inspection Service.

    • See what states have a federal quarantine for any of the targeted Hungry Pests, and identify which pests or diseases are at greatest risk due to a suitable habitat. In addition to federal quarantines, state-level quarantines might apply see State Summaries of Plant Protection Laws and Regulations (National Plant Board).

      See also: The Threat for an overview of the top invasive pest threats; indicates places with Federal Quarantines in place.


Selected Resources

The section below contains highly relevant resources for this species, organized by source.

Federal Government
International Government
State and Local Government
  • Grafton-Cardwell, E.E., K.E. Godfrey, M.E. Michaels, C.C. Childers, and P.A. Stansly. 2006. Asian Citrus Psyllid [PDF, 865 KB]. University of California, Division of Agriculture and Natural Resources. Publication 8205.

  • Integrated Taxonomic Information System. Diaphorina citri. [Accessed Mar 12, 2023].