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Related to Ixodidae: Argasidae, family Ixodidae
The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.



a family of arthropods of the Acarina order. The structure and functions of the basic vital systems combine ancient primitive features with the best adaptation for parasitism among ticks. The body (1–10 mm long) is divided into the proboscis (or capitulum), bearing the oral parts, and a trunk (or idiosome), with four pairs of legs. The integuments have lost all traces of segmentation. The digestive and sexual systems are highly developed; the size of the trunk increases greatly when the tick sucks blood.

There are approximately 1,000 species of Ixodidae, distributed over all the continents except Antarctica; they are most diverse and numerous in tropical and subtropical latitudes. About 100 species are found in the USSR, from the islands of the northern seas, where they inhabit bird colonies, to the country’s southern borders, including the deserts and high mountains of Middle Asia. They are parasitic on vertebrates, both wild (reptiles, birds, and mammals) and domestic, feeding solely on blood. Many species also attack humans who enter their natural habitat. The development cycle includes the egg and three active stages (larva, nymph, and adult), each of which feeds once every three to ten days. Within a certain time after feeding, the female lays her eggs, numbering several tens of thousands for some species.

The Ixodidae transmit pathogenic organisms to humans and are the vectors of such diseases as encephalitides (the main carriers are Ixodes persulcatus and I. ricinus), tick typhus, hemorrhagic fever, Q fever, and tularemia; they also transmit disease organisms to farm animals. Protective measures include wearing suitable clothing and netting soaked in a tick repellent.


Pomerantsev, B.I. Iksodovye kleshchi. Moscow-Leningrad, 1950. (Fauna SSSR: Paukoobraznye, vol. 4, issue 2.)
Pavlovskii, E.N. Prirodnaia ochagovost’ transmissivnykh boleznei…. Moscow-Leningrad, 1964.
Balashov, Iu. S. Krovososushchie kleshchi—perenoschiki boleznei cheloveka i zhivotnykh. Leningrad, 1967.


The Great Soviet Encyclopedia, 3rd Edition (1970-1979). © 2010 The Gale Group, Inc. All rights reserved.
References in periodicals archive ?
Transmission of the agent of human granulocytic ehrlichiosis by host-seeking Ixodes scapularis (Aeari: Ixodidae) in southern New York state.
Ixodes affinis (Acari: Ixodidae) in dogs from rural localities of Yucatan, Mexico: Prevalence, abundance and associated factors.
Seasonal variation of Boophilus microplus (Canestrini, 1887)(Acari: Ixodidae) in cattle in Minas Gerais State, Brazil.
Divergent environmental preferences and areas of sympatry of tick species in the Amblyomma cajennense complex (Ixodidae).
Garrapatas (Acari: Ixodidae) asociadas a perros en diferentes ambientes de la provincia de Corrientes, Argentina.
In total, 1598 larvae and 131 nymphs were found; all individuals were Ixodidae (hard ticks) but were not identified to genus/species.