26. Dermacentor occidentalis Marx, 1892 in Curtice (1892) .

A Nearctic species whose adults are usually found on Artiodactyla: Bovidae and Cervidae, and Perissodactyla: Equidae; larvae and nymphs are commonly collected from Lagomorpha: Leporidae, and Rodentia (several families), but all parasitic stages have also been recovered from Mammalia (several orders). Dermacentor occidentalis is a frequent parasite of humans.

M: Curtice (1892)

F: Curtice (1892)

N: Hooker et al. (1912)

L: Hooker et al. (1912)

Redescriptions

M: Banks (1908), Stiles (1910), Hooker et al. (1912), Cooley (1938), Arthur (1960a), Brinton et al. (1965), Furman and Loomis (1984), Yunker et al. (1986)

F: Banks (1908), Stiles (1910), Hooker et al. (1912), Cooley (1938), Arthur (1960a), Brinton et al. (1965), Furman and Loomis (1984), Yunker et al. (1986)

N: Cooley (1938), Arthur (1960a), Brinton et al. (1965), Furman and Loomis (1984)

L: Cooley (1938), Arthur (1960a), Brinton et al. (1965), Furman and Loomis (1984), Coley (2015)

Note: Furman and Loomis (1984) state that the larva and nymph of Dermacentor occidentalis are very difficult to morphologically separate from the corresponding stages of Dermacentor andersoni .