Ectoparasitic and phoretic arthropods of Virginia opossums (Didelphis virginiana) in central Tennessee

Thirteen species of ectoparasitic (12) or phoretic (1) arthropods were collected from 26 adult Virginia opossums, Didelphis virginiana, live-trapped from April through September 1987 in Davidson County, Tennessee. The cat flea Ctenocephalides felis and the American dog tick Dermacentor variabilis were the predominant species with respect to mean intensity and prevalence. The macronyssid mite Ornithonyssus wernecki and the atopomelid mite Didelphilichus serrifer, both specific parasites of this host, showed high intensities but low prevalences. Other fleas collected were Cediopsylla simplex, Ctenophthalmus pseudagyrtes, and Orchopeas howardi. The tick Amblyomma americanum, the myobiid mite Archemyobia inexpectatus, and the trombiculid (chigger) mites Eutrombicula splendens, Leptotrombidium peromysci (first record from this host) and Neotrombicula cavicola (first record from this host), were also recorded. One phoretic species, the glycyphagid mite Marsupialichus brasiliensis, was noted.