Like ticks native to North America, Asian longhorned ticks have three life stages-larva, nymph, and adult-which utilize three separate hosts. Information on the biology of Asian longhorned ticks is from its native range or Oceania where it also is invasive. It is important to be aware of the presence of this tick in Pennsylvania and to diligently scout for the Asian longhorned tick on companion animals and livestock. The Asian longhorned tick is now an invasive pest established in the United States.
They now have been identified in 18 states, including Pennsylvania.
Originally reported in New Jersey in 2013, new specimens were identified in the fall of 2017 when a large population was found on sheep in Mercer County, New Jersey. The Asian longhorned tick is native to East and Central Asia where it thrives under temperate conditions.
