Any of various mites of the genus Trombicula that inhabit forests and grasslands and which, in their larval stage, attach to various animals including humans and feed on skin, often causing itching.
Any of various small crustaceans of the family Talitridae (order Amphipoda), that are found on beaches and jump like a flea.
A small tropical flea, Tunga penetrans; a chigoe (family: Tungidae, order: Siphonaptera).