Asia's longhorned tick takes its first documented bite in the U.S.

Two ticks in their nymphal stage: At left, the longhorned tick, native to Asia and a recent arrival in the U.S. At right, the lone star tick, found in the eastern United States and in Mexico.
Two ticks in their nymphal stage: At left, the longhorned tick, native to Asia and a recent arrival in the U.S. At right, the lone star tick, found in the eastern United States and in Mexico.