for words beginning thus see also those beginning hem-.
a genus of leeches in the class Hirudinea. Small, 1 to 1.5 inches, but heavy infestations can cause anemia.
African plant of family Liliaceae; may contain a cardiac glycoside which causes cardiac irregularity and sudden death. Called also blood lily.
a large genus of small ticks in the family Ixodidae.
H. bancrofti found on cattle and marsupials. Called also wallaby tick.
H. bispinosa found on cattle.
H. chordeilis (syn. H. cinnabarina, H. punctata) found on birds.
H. cinnabarina punctata found on most mammals and on birds. Implicated in the transmission of Babesia bigemina, B. motasi, Anaplasma centrale, A. marginale. ...
a genus of small, gray, blood-sucking flies. Called also Lyperosia spp., Haematobosca spp.
H. atripalpis a vector for Parafilaria bovicola.
H. exigua (syn. Siphona spp.) a parasite of buffalo and cattle. Transmits Trypanosoma evansi, Habronema majus. Called also buffalo fly.
H. irritans found on cattle, occasionally other mammals. Creates skin lesions around horns, and along neck...
exotic, rare lice of aberrant constitution. The only genus in the family Rhynchophthirina.
H. elephantis found on elephants.
H. hopkinsi found on wart hogs.
a genus of sucking lice in the order Phthiraptera.
H. asini found on horses.
H. bufali found on buffalo.
H. eurysternus found on cattle. Called also shortnosed cattle lice.
H. quadripertusus found on cattle.
H. suis the large pig louse.
H. trichechi found on walrus.
H. tuberculatus found on cattle, camel, yak and buffalo.
large, blood-sucking flies predatory on vertebrates. A genus of the family Tabanidae. They are mechanical transmitters of anthrax, equine infectious anemia, anaplasmosis and Trypanosoma evansi. Cyclical transmitters of Trypanosoma theileri. Cause significant insect worry to horses. Includes H. pluvialis.