Ixodes pararicinus Keirans and Clifford, 1985 in Keirans et al. (1985)

Guglielmone, Alberto A., Petney, Trevor N. & Robbins, Richard G., 2020, Ixodidae (Acari: Ixodoidea): descriptions and redescriptions of all known species from 1758 to December 31, 2019, Zootaxa 4871 (1), pp. 1-322 : 55

175. Ixodes pararicinus Keirans and Clifford, 1985 in Keirans et al. (1985) .

A Neotropical species whose adults have been found on Artiodactyla : Bovidae , and Perissodactyla : Equidae , with a single record from Chiroptera : Phyllostomidae ; the undescribed immature stages have been collected from Rodentia : Cricetidae , Passeriformes (several families), Carnivora : Canidae , and Didelphimorphia : Didelphidae , but see note below. Ixodes pararicinus is a very rare parasite of humans.

M: Keirans et al. (1985)

F: Keirans et al. (1985)

N: undescribed; see note below

L: undescribed; see note below

Redescriptions

M: Nava et al. (2017), Saracho-Bottero et al. (2020)

F: Nava et al. (2017), Saracho-Bottero et al. (2020)

Note: Venzal et al. (2005) described the nymph and larva of Ixodes pararicinus , but Nava et al. (2017) state that it is unclear whether those descriptions correspond to bona fide Ixodes pararicinus or to Ixodes fuscipes (as Ixodes aragaoi ). We have therefore excluded the Venzal et al. (2005) descriptions from the above lists. Consequently, records of immature stages of Ixodes pararicinus should be considered provisionally valid. Bona fide populations of Ixodes pararicinus are found only in northwestern Argentina in the Yungas phytogeographic province of the Amazonian domain, because populations purportedly of this species in northeastern Argentina belong to Ixodes affinis or a species morphologically close to it, and records of Ixodes pararicinus outside Argentina, as in Colombia by Acevedo-Gutiérrez et al. (2020), are considered doubtful ( Saracho-Bottero et al. 2020). Given this newly limited distribution, the host lists in Guglielmone et al. (2014), Nava et al. (2017) and Guglielmone and Robbins (2018) contain more hosts than recorded here.