44. Dermacentor variabilis (Say, 1821) .

Nearctic: 1) Canada, 2) Mexico (north), 3) USA; Neotropical: Mexico (south) (Furman & Loomis 1984, Yunker et al. 1986, Guzmán-Cornejo et al. 2016, Lindquist et al. 2016, Guglielmone et al. 2021).

A record of Dermacentor variabilis from Guatemala in Alvarez-Robles et al. (2018) is excluded from the list above because it was based on references that do not contain information about this tick. Records of Dermacentor variabilis from Nigeria and Pakistan in Opara & Ezeh (2011) and Cheema et al. (1992), among others, are treated here as misidentifications.