Gamasoid mites are the common name for several species of arthropods of the subfamily Gamasoidea that parasitize mammals. They were formerly part of the family Gamasida, but were separated into a separate family in 2013[2][10]. Mites class order: Acari.
In the world fauna there are at least 140 species (with subspecies) of ticks of the family and about 500 different species of the genus Haemaphysalis, common in natural and artificial biotopes of Eurasia. The species diversity of natural hosts in the northeast of Russia rarely exceeds 2 - 3 species. Of the more than 130 species of ticks in the genus, one, and more often several subspecies are known. Ticks of the genus Rhodnius have not yet been classified as species and their taxonomy remains a matter of debate. Moreover, different researchers attribute from 6 to 7 species to this genus, however, at the level of a group of subspecies within the genus, these disagreements can be overcome, subject to full-scale studies based on the study of population structures on the molecular