In the summer of 2017, specimens of an “unusual-looking” tick were reported to public health officials in New Jersey, and they were later determined to be a species, Haemaphysalis longicornis, from the other side of the world. No established population of the species, native to Asia, has ever been previously documented in the United States. Pictured above are engorged (left) and partially engorged (middle) adult females and an engorged larva (right). Scale at top is in millimeters. (Photo credit: James L. Occi, Rutgers University)