A Smithsonian researcher zoologist and her team have discovered a new species of leech in North America for the first time in over 40 years. Anna Phillips, who is also the museum's curator of ...

A newly discovered bloodsucking, olive-green leech with three jaws and as many as 59 teeth has been found about 40 miles outside of downtown Washington. A team led by a researcher at the Smithsonian’s ...

There’s one more species to add to the list of parasites that feed on human blood. Macrobdella mimicus has three muscular jaws, each of which are lined with 56 to 59 teeth, research zoologist Anna ...