On "tick paralysis" in sheep and man following bites of Dermacentor venustus.
Banks has designated it as Dermacentor venustus and this name is used in the publications of the Bureau of Entomology.
One nymph of Dermacentor variabilis (Say) was found attached to the scapular region of a prairie vole.
Dermacentor variabilis is a common dog tick of the eastern United States.
It is caused by the bites of Dermacentor venustus and was experimentally produced in lambs and a dog (Hadwen and Nuttall, 1913).
