Invasive Species Compendium

Detailed coverage of invasive species threatening livelihoods and the environment worldwide


Hyalomma truncatum



Hyalomma truncatum


  • Last modified
  • 20 November 2019
  • Datasheet Type(s)
  • Vector of Animal Disease
  • Preferred Scientific Name
  • Hyalomma truncatum
  • Taxonomic Tree
  • Domain: Eukaryota
  •   Kingdom: Metazoa
  •     Phylum: Arthropoda
  •       Subphylum: Chelicerata
  •         Class: Arachnida

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Hyalomma truncatum (bont-legged tick); adults, female (a) and male (b). From Sudan.
CaptionHyalomma truncatum (bont-legged tick); adults, female (a) and male (b). From Sudan.
Copyright©Jim Occi/BugPics/ - CC BY-NC 3.0 US
Hyalomma truncatum (bont-legged tick); adults, female (a) and male (b). From Sudan.
AdultsHyalomma truncatum (bont-legged tick); adults, female (a) and male (b). From Sudan.©Jim Occi/BugPics/ - CC BY-NC 3.0 US


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The genus Hyalomma, bont-legged ticks, comprises 25 species that have long palps and hypostome. These dark-brown or black inornate ticks have beady eyes and banded legs, and are very well adapted to dry climates. Several species of Hyalomma transmit the Crimean-Congo haemorrhagic fever virus (Hoogstraal, 1956). Other important species include H. dromedarii in camels, H. aegyptium in tortoises, and H. marginatum and H. rutipes in cattle.


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Preferred Scientific Name

  • Hyalomma truncatum (Koch, 1844)

International Common Names

  • English: bont-leg, tick, African; bont-legged tick; sweating sickness; sweating sickness, hyalomma toxicity - exotic; tick, bont-legged

EPPO code

  • HYAMTR (Hyalomma truncatum)

Taxonomic Tree

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  • Domain: Eukaryota
  •     Kingdom: Metazoa
  •         Phylum: Arthropoda
  •             Subphylum: Chelicerata
  •                 Class: Arachnida
  •                     Subclass: Acari
  •                         Order: Parasitiformes
  •                             Suborder: Ixodida
  •                                 Family: Ixodidae
  •                                     Genus: Hyalomma
  •                                         Species: Hyalomma truncatum

Hosts/Species Affected

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Common hosts for adult H. truncatum ticks are cattle, sheep, goats, pigs, horses and camels. Wild hosts include eland, antelopes and zebra. Immature stages frequently feed on hares and rodents.


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H. truncatum is widespread in arid and semi-arid regions of eastern, central and southern Africa. The tick is adapted to dry environments and areas of little vegetation where it lives in or around livestock housing.

Distribution Table

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The distribution in this summary table is based on all the information available. When several references are cited, they may give conflicting information on the status. Further details may be available for individual references in the Distribution Table Details section which can be selected by going to Generate Report.

Last updated: 10 Jan 2020


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Hoogstraal H, 1956. African Ixodoidae. 1. Ticks of the Sudan with special reference to Equatoria Province and with preliminary reviews of the genera Boophilus, Margaropus and Hyalomma. Research report NM, 1101 pp. Washington D.C.: Department of the Navy, Bureau of Medicine and Surgery.

Norval RAI, 1983. The ticks of Zimbabwe. IV. The genus Hyalomma. Zimbabwe Veterinary Journal, 13:2-10.

Spickett AM, 1992. Sweating sickness - aetiology and the development of immunity. First International Conference on Tick-borne Pathogens at the Host-Vector Interface: An Agenda for Research: Proceedings and abstracts, September 15-18, 1992, University of Minnesota College of Agriculture, Department of Entomology, and Minnesota Extension Service, Saint Paul, Minnesota, USA., 212-215; 15 ref.

Distribution References

CABI Data Mining, 2001. CAB Abstracts Data Mining.,

CABI Data Mining, Undated. CAB Abstracts Data Mining.,

Links to Websites

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International Consortium on Ticks and Tick-borne Diseases (ICTTD-2)

Distribution Maps

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