-xenous (Greek: a combining suffix pertaining to a "host" or "guest").
Said of a parasite that may infect two species, but can pass its entire life cycle on either.
Also heteroecious; in biology, going through different stages of growth on different hosts, as certain parasitic fungi.
Said of a parasite that leaves its host after it has secured adequate nourishment.
Also metoecious and heteroecious; parasitic on different hosts at different stages in life-history.
Furnishing both food and shelter for ants.
Said of a parasite that is not host specific.
Said of a parasite that requires three successive hosts.