Notes on the rat lice Polyplax spinulosa (Burmeister) and Hoplopleura oenomydis Ferris

The paper includes descriptions of the eggs, three nymphal stages, males, and females of the spiny rat louse (Polyplax spinulosa) and the tropical rat louse (Hoplopleura oenomydis). There are maps showing these two species in the United States, the only sucking lice commonly collected from domestic rats during the joint Murine Typhus Control Program of the State health departments and the Communicable Disease Center of the U.S. Public Health Service during the period 1945-1952.