WASHINGTON, D.C. (WPVI) -- A new species of tick native to Asia is popping up along the East Coast of the U.S.
The longhorned tick, or Haemaphysalis longicornis, was first confirmed in the U-S last year, on a sheep in New Jersey.
A few weeks ago, one was found on a wild deer in Centre County, Pennsylvania.
Ticks have also been found in several other states - but scientists don't know how they got there.
Female longhorned ticks don't need a male to reproduce.
They can spawn asexually.
After feeding, a single female can lay around 2,000 eggs, according to the Pennsylvania Department of Health.
The U.S. Department of Agriculture says that's enough to establish a tick population in a new location.
The longhorned tick can cause infestations in livestock, sucking so much blood, it causes anemia, and even death.
In most life stages, longhorned ticks are the size of a poppy see.
Adult longhorned ticks grow to the size of a pea when they are fully engorged with blood.
Its impact on humans is unknown, but people are urged to step up tick prevention.
New tick species causing health, livestock concerns
Female can produce 2,000 eggs without male
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