- Der·ma·nys·sus -'nis-əs n the type genus of the family Dermanyssidae comprising a number of blood-sucking mites that are parasitic on birds see CHICKEN MITE
* * *n.a genus of widespread parasitic mites. The red poultry mite, D. gallinae, is a common parasite of wild birds in temperate regions but can also infest poultry. It occasionally attacks and takes a blood meal from humans, causing itching and mild dermatitis.
* * *Der·ma·nys·sus (dur″mə-nisґəs) [derma- + Gr. nyssein to prick] a genus of mites of the family Dermanyssidae. D. galliґnae, the bird mite or chicken mite, infests poultry and sometimes humans.
Medical dictionary. 2011.