Most important morphological characters of male Dermacentor reticulatus.
a Dorsal capitulum. b Ventral body. c Dorsal body. 1, Cornua length is long. 2, Palp articles 2 posterior spur is long on the dorsal surface. 3, Coxae 1 gap between external and internal spurs is narrow (also the external spur is as long as the internal spur). 4, Lateral groove type is in the form of punctations only (there is no groove visible). 5, Trochanter 1 posterior spur is long on the dorsal surface. Original drawings by Alan R. Walker