Ixodidae (Acari: Ixodoidea): descriptions and redescriptions of all known species from 1758 to December 31, 2019 Author Guglielmone, Alberto A. 0000-0001-5430-2889 guglielmone.alberto@inta.gob.ar Author Petney, Trevor N. 0000-0002-9135-4546 trevor.petney@smnk.de Author Robbins, Richard G. 0000-0001-5430-2889 guglielmone.alberto@inta.gob.ar text Zootaxa 2020 2020-11-05 4871 1 1 322 journal article 7890 10.11646/zootaxa.4871.1.1 344f8a86-21a1-428e-ae4f-01ea6082254a 1175-5326 4423340 C21A719F-9A6B-4227-8386-1AFA22620614 90. Amblyomma parkeri Fonseca and Aragão, 1952a . A Neotropical species whose adults are usually found on Rodentia : Erethizontidae ; most nymphs have been collected from Erethizontidae and Primates : Atelidae , and most larvae have been taken from Passeriformes (several families). Adults and nymphs have been recovered from Primates : Atelidae ; adults alone have been taken from Carnivora : Procyonidae ; nymphs alone have been found on Didelphimorphia : Didelphidae , Primates : Pitheciidae , Accipitriformes : Accipitridae , and Galliformes : Cracidae ; and larvae alone have been collected from Caprimulgiformes: Trochilidae . Amblyomma parkeri was listed as a very rare parasite of humans in Guglielmone and Robbins (2018) , but several new cases of human parasitism by nymphs of this tick have been reported from Brazil by Reck et al. (2018) and Borsoi et al. (2019) . M: Labruna et al. (2009) F: Fonseca and Aragão (1952a) N: Fonseca and Aragão (1952a) L: Fonseca and Aragão (1952a) Redescriptions M: Onofrio et al. (2006b) , Dantas-Torres et al. (2019b) F: Onofrio et al. (2006b) , Labruna et al. (2009) , Dantas-Torres et al. (2019b) N: Martins et al. (2010 , 2013) L: none Note: Amblyomma parkeri is a valid species but was treated as doubtful in Kolonin (2009) and was excluded from the list of Neotropical ticks in Voltzit (2007) . However, it was definitively reinstated by Labruna et al. (2009) , who found Amblyomma parkeri extensively confused with Amblyomma geayi in southern Brazil . Amblyomma geayi , Amblyomma longirostre , Amblyomma parkeri and Amblyomma romarioi are morphologically similar species, and separation of adults and especially immature stages is difficult.