2. Dermacentor andersoni Stiles, 1908. Nearctic: 1) Canada, 2) USA (Cooley 1938, Yunker et al. 1986, Lindquist et al. 2016). As in the case of the previous species, Dermacentor andersoni has been introduced into various countries outside the Nearctic Region (Guglielmone et al. 2014), but this tick has failed to establish itself elsewhere. Records of Dermacentor andersoni in Brazil (Barroso 1922, under the name Dermacentor venustus), Pakistan (Rafique et al. 2015, Ramzan et al. 2020b, and others) and Nigeria (Ekanem et al. 2012, Yakubu et al. 2015) are treated here as misidentifications. There are also several reports of Dermacentor andersoni from the Nearctic and Neotropical parts of Mexico in Gordillo-Pérez et al. (2009) and Sosa-Gutiérrez et al. (2016), among others, but no bona fide evidence of the presence of this species in Mexico has been provided (Guzmán-Cornejo et al. 2016, Guglielmone et al. 2021). Consequently, Mexico is not included within the range of Dermacentor andersoni.

Published as part of Guglielmone, Alberto A., Nava, Santiago & Robbins, Richard G., 2023, Geographic distribution of the hard ticks (Acari: Ixodida: Ixodidae) of the world by countries and territories, pp. 1-274 in Zootaxa 5251 (1) on page 69, DOI: 10.11646/zootaxa.5251.1.1, http://zenodo.org/record/7704190