Geographic distribution of the hard ticks (Acari: Ixodida: Ixodidae) of the world by countries and territories Author Guglielmone, Alberto A. 0000-0001-5430-2889 guglielmone.alberto@inta.gob.ar Author Nava, Santiago 0000-0001-7791-4239 nava.santiago@inta.gob.ar Author Robbins, Richard G. 0000-0003-2443-5271 robbinsrg@si.edu text Zootaxa 2023 2023-03-07 5251 1 1 274 http://dx.doi.org/10.11646/zootaxa.5251.1.1 journal article 235222 10.11646/zootaxa.5251.1.1 43227427-a867-4744-9e4c-2b2302524890 1175-5326 7704190 3326BF76-A2FB-4244-BA4C-D0AF81F55637 91. Amblyomma parvum Arag ã o, 1908a. Neotropical: 1) Argentina , 2) Bolivia , 3) Brazil , 4) Colombia , 5) Costa Rica , 6) El Salvador , 7) Guatemala , 8) Mexico (south), 9) Nicaragua , 10) Panama , 11) Paraguay , 12) Venezuela ( Nava et al. 2008 , Guzmán-Cornejo et al. 2011 , Ḑttmann et al. 2016, Santodomingo et al. 2019 , Costa et al. 2020 , Guglielmone et al. 2021 , Romero et al. 2021 ). French Guiana was included within the geographic distribution of Amblyomma parvum in Guglielmone et al. (2003) , Nava et al. (2017) and Guglielmone & Robbins (2018) . The supposed presence of this species in French Guiana was based on a nymph collected from a rodent, as reported in Floch & Fauran (1958) . However, Binetruy et al. (2019) were unable to confirm the presence of Amblyomma parvum in French Guiana , and that territory is excluded from the range of this tick. Lado et al. (2016) found that specimens of Amblyomma parvum from Costa Rica , El Salvador , southern Mexico and Panama differ molecularly from specimens collected in Argentina , Brazil and Paraguay . Consequently, Bermúdez et al. (2018) named ticks found in Panama Amblyomma near parvum . Further studies will probably confirm that more than one species exists under the name Amblyomma parvum , and the geographic distribution of this tick will need to be modified accordingly.