phthiriasis

Greek pht heir i as is, from phtheir a louse.] neck, the back, the legs, and the upper part of the socket of the arm, and ultimately the whole body. phthir'-I-ŭs, s. [ Gr.phtheir =alouse.] Entom.: A genus of Pediculide. Phthirius in quinalis or pubis is the same as Pediculus pubis . (PEDICULUS.]