Geographic distribution of the hard ticks (Acari: Ixodida: Ixodidae) of the world by countries and territories Guglielmone, Alberto A. Nava, Santiago Robbins, Richard G. Zootaxa 2023 2023-03-07 5251 1 1 274 CMBQ 231478 Neumann, 1899 Neumann 1899 [194,673,654,681] Arachnida Ixodidae Amblyomma Animalia Ixodida 41 42 Arthropoda species calcaratum  Neotropical: 1) Argentina, 2) Belize, 3) Bolivia, 4) Brazil, 5) Colombia, 6) Costa Rica, 7) Ecuador, 8) French Guiana, 9) Mexico(south), 10) Panama, 11) Paraguay, 12) Peru, 13) Suriname, 14) Trinidad and Tobago, 15) Venezuela( Tonelli Rondelli 1931, Floch & Fauran 1958, Fairchild et al.1966, Jones et al.1972, Keirans 1985b, Alvarez et al.2005, Labruna et al.2005c, Guglielmone & Nava 2006, Guzmán-Cornejo et al.2011, Mastropaolo et al.2014, Ogrzewalska et al.2014, Acevedo-Gutiérrez et al.2020, Guglielmone et al.2021).   Guglielmone et al.(2020, 2021) stated that authors redescribing  Amblyomma calcaratumdisagree about the ornamentation and shape of the female scutum.  Amblyomma calcaratumand  Amblyomma nodosumare morphologically close and share Neotropical territories and hosts. Fairchild et al.(1966)had previously cautioned that adults of  Amblyomma calcaratumand  Amblyomma nodosumcan be confused with one another; consequently, uncertainty prevails concerning their precise geographic distributions.   Amblyomma calcariswas described by Nakatsudi (1942b)from a specimen collected at a Palearctic locality and is treated as a synonym of  Amblyomma calcaratumin Camicas et al.(1998), a view apparently accepted by Yamauchi (2010). However, Guglielmone et al.(2021)doubted whether  Amblyomma calcarisis even a member of the genus  Amblyommaand followed Guglielmone & Nava (2014)in treating this name as incertae sedis.