- An Old World genus (about 21 species) of large ixodid ticks with submarginal eyes, coalesced festoons, an ornate scutum, and a long rostrum. Adults parasitize all domestic animals and a wide variety of wild animals; larvae or nymphs may parasitize small mammals, birds, and reptiles. Species harbor a great variety of pathogens of humans and animals, and also cause considerable mechanical injury. [hyalo- + G. omma, eye]- H. anatolicum former name for H. anatolicum anatolicum.- H. anatolicum anatolicum a subspecies infesting cattle, camels and horses in Asia, the Near and Middle East, southeastern Europe, and North Africa; it is a vector of bovine tropical theileriosis, of equine babesiosis, and of human Crimean-Congo hemorrhagic fever.- H. marginatum a particularly common species of tick carried by birds migrating between Europe and Asia and Africa, and the probable vector of the virus of Crimean hemorrhagic fever.- H. variegatum species of tick that is the vector of the viral agent of lymphocytic choriomeningitis in Ethiopia.
* * *Hy·a·lom·ma .hī-ə-'läm-ə n a genus of Old World ticks that attack wild and domestic mammals and sometimes humans, produce severe lesions by their bites, and often serve as vectors of viral and protozoal diseases (as east coast fever)
* * *Hy·a·lom·ma (hi″ə-lomґə) [hyal- + Gr. omma eye] a genus of ticks of the family Ixodidae, found primarily in hot and dry regions of the world.
Medical dictionary. 2011.