Peter Valedespino was a forensic etymologist.
Fox Mulder reached out to him about killer bees.
Six months later, Walter Skinner brought a sample of bee honey to him. He found a larva inside, and said he would know more after it grew. Later, however, he returned to his lab to find that dozens of bees had grown and soon he was attacked and killed. His body showed blisters from a type of smallpox. (TXF: "Zero Sum")