Fig 110 (a). Ptilonyssus nudus female dorsal habitus.

Fig 110 (b). Ptilonyssus nudus female dorsum.

Fig 110 (c). Ptilonyssus nudus female venter.

North American host records:
Hirundo rustica, Barn Swallow (Pence 1975)
Riparia riparia, Sand Martin (Pence 1975)

Parus atricapillus, Black-capped Chickadee (Pence 1975)

Passer domesticus, House Sparrow (Porter and Strandtmann 1952; George 1961; Wilson 1964; Pence 1975; Knee et al. 2008)

Sturnus vulgaris, Common Starling (Pence 1975)

Diagnostic characteristics:
– two dorsal shields, podosomal and pygidial shields
– posterior margin of podosomal shield is rounded
– st1 st2 and st3 on the sternal shield
– subapical ventral setal pair on tarsus IV are relatively long strong spikes
– seven pairs of ventral opisthosomal setae
– three pairs of mesolateral setae
– mesolateral setae all approximately equal in length, there are not two pairs of setae that are twice as long as another setal pair
– subposterior pair of dorsal podosomal setae are less than half the length of the longest mesolateral setae
– paranal setae posterior to anal opening, paranal and postanal setae are equal or almost equal in length

Berlese, A., and E.L. Trouessart. 1889. Diagnoses d’acariens nouveaux ou peu connus. Bulletin de la
        Societe de Sciences Naturelles de l’Ouest de la France (Nantes), 2: 126-130.George, J.E. 1961. The nasal mites of the genus Ptilonyssus (Acarina: Rhinonyssidae)
        occuring on some north american passerifrom birds. Kansas Entomological
        Society, 34: 105-132.Knee, W., Proctor, H., and Galloway, T. 2008. Survey of nasal mites (Rhinonyssidae, Ereynetidae,
        and Turbinoptidae) associated with birds in Alberta and Manitoba, Canada. Canadian Entomologist,
: 364-379.Pence, D.B. 1975. Keys, species and host list, and bibliography for nasal mites of
        North American birds (Acarina: Rhinonyssinae, Turbinoptinae,
        Speleognathinae, and Cytoditidae). Special Publications of the Museum Texas
        Tech University, 8: 1-148.
Porter, J.C. and Strandtmann, R.W. 1952. Nasal mites of the English Sparrow. The Texas
        Journal of Science, 4: 393-399.
Wilson, N. 1964. New records and descriptions of Rhinonyssidae, mostly from New
        Guinea (Acarina: Mesostigmata). Pacific Insects, 6: 357-388.