A revaluation of the Hystrichopsylla occidentalis group, with description of a new subspecies (Siphonaptera: Hystrichopsyllidae).

On the basis of morphologic and geographic criteria, 3 subspecies are defined within the taxon Hystrichopsylla occidentalis Holland. They are H. o. occidentalis Holland; H. o. linsdalei Holland, new combination; and H. o. sylvatics , n. subsp.