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Asian Longhorned Tick

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Asian longhorned tick - CDC
Scientific Name:
Haemaphysalis longicornis Neumann, 1901 (Hoogstraal et al. 1968)
Common Name:
Asian longhorned tick, bush tick, cattle tick
Asian longhorned tick, adult female dorsal view climbing on a blade of grass - Photo by James Gathany; CDC


  • DHHS. Centers for Disease Control and Prevention.
    The Centers for Disease Control and Prevention is working with public health, agricultural, and academic experts to understand the possible threat posed by the spread of the Asian longhorned tick (Haemaphysalis longicornis) in several U.S. states since its discovery in 2017, according to today’s Morbidity and Mortality Weekly Report. "The full public health and agricultural impact of this tick discovery and spread is unknown," said Ben Beard, Ph.D., deputy director of CDC's Division of Vector-Borne Diseases. "In other parts of the world, the Asian longhorned tick can transmit many types of pathogens common in the United States. We are concerned that this tick, which can cause massive infestations on animals, on people, and in the environment, is spreading in the United States."
Native To:
Eastern Asia (CDC 2018)
Date of U.S. Introduction:
First detected in New Jersey in 2017 (CDC 2018)
Means of Introduction:
Has been intercepted at U.S. ports of entry on imported animals and materials (CDC 2018)
Potential vector of several human and animal diseases present in the United States ​(CDC 2018)

Distribution/Maps/Survey Status


Selected Resources

The section below contains selected highly relevant resources for this species, organized by source. To view all related content for this species, click on "View all resources for species" in the top left of this page.


Northeast Regional Center for Excellence in Vector-Borne Diseases.

Federal Government

USDA. Animal and Plant Health Inspection Service.
See also: Cattle - Vector-Borne Diseases for more resources

International Government

Western Australia Department of Primary Industries and Regional Development. Agriculture and Food Division.

State and Local Government

New Jersey Department of Environmental Protection. Division of Fish and Wildlife.


Pennsylvania State University. Cooperative Extension.
Virginia Tech; Virginia State University. Virginia Cooperative Extension.
See also: Resources for Agricultural Insects Pests for more factsheets
University of Georgia. College of Veterinary Medicine. Southeastern Cooperative Wildlife Disease Study.