''Sternostoma setifer'' is a mite that is
parasitic
Parasitism is a close relationship between species, where one organism, the parasite, lives on or inside another organism, the host, causing it some harm, and is adapted structurally to this way of life. The entomologist E. O. Wilson ha ...
in the
nasal passage
The nasal cavity is a large, air-filled space above and behind the nose in the middle of the face. The nasal septum divides the cavity into two cavities, also known as fossae. Each cavity is the continuation of one of the two nostrils. The nasal c ...
s of some North American birds, including bluebirds and martins.
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References
Further reading
*Knee, Wayne, Heather Proctor, and Terry Galloway. "Survey of nasal mites (Rhinonyssidae, Ereynetidae, and Turbinoptidae) associated with birds in Alberta and Manitoba, Canada." The Canadian Entomologist 140.03 (2008): 364–379.
Parasites of birds
Ectoparasites
Parasitic acari
Arthropods of Canada
Rhinonyssidae
{{Mesostigmata-stub