Ixodes dentatus was named and illustrated in manuscript by Marx, but the first published description was by Neumann2 in 1899, based only on the female. The male, nymph, and larva were described by Smith3. Nuttall4 described all stages of a new variety of this species, I. dentatus spinipalpis, from western Canada. The typical I. dentatus, which differs from the variety spinipalpis in all stages, occurs in the eastern part of the United States and is the subject of this study.
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Carroll N. Smith (1945) studied this question.