Amblyomma varium

{{Short description|Species of tick}}

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| taxon = Amblyomma varium

| authority = Koch, 1844

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Amblyomma varium, or carrapato-gigante-da-preguiça (sloth's giant tick), is a species of hard-backed ticks of the genus Amblyomma, a blood feeding parasite. The adult stage of this tick is specific to the sloths Bradypus tridactylus, Bradypus variegatus, Bradypus torquatus, Choloepus hoffmanni and Choloepus didactylus,{{Cite journal |last1=Marques |first1=Sandro |last2=Barros-Battesti |first2=Darci Moraes |last3=Faccini |first3=João Luiz Horacio |last4=Onofrio |first4=Valeria Castilho |date= 2002|title=Brazilian distribution of Amblyomma varium Koch, 1844 (Acari: Ixodidae), a common parasite of sloths (Mammalia: Xenarthra) |url=https://doi.org/10.1590/s0074-02762002000800014 |journal=Memórias do Instituto Oswaldo Cruz |volume=97 |issue=8 |pages=1141–1146 |doi=10.1590/s0074-02762002000800014 |pmid=12563481 |issn=0074-0276}} with others being considered only incidental infections. It can be found in South America.{{Cite journal |last1=Gilmore |first1=D.P. |last2=Da Costa |first2=C.P. |last3=Duarte |first3=D.P.F. |date=January 2001 |title=Sloth biology: an update on their physiological ecology, behavior and role as vectors of arthropods and arboviruses |url=https://doi.org/10.1590/s0100-879x2001000100002 |journal=Brazilian Journal of Medical and Biological Research |volume=34 |issue=1 |pages=9–25 |doi=10.1590/s0100-879x2001000100002 |issn=0100-879X}}