Fig 112 (a). Ptilonyssus calvaria female dorsal habitus.

Fig 112 (b). Ptilonyssus calvaria female dorsum.

Fig 112 (c). Ptilonyssus calvaria female venter.

North American host records:
Emberizidae:
Spizella passerina, Chipping Sparrow (Knee et al. 2008)

Diagnostic characteristics:
– two dorsal shields, podosomal and pygidial shields
– posterior margin of podosomal shield is trilobed
– st1 on with st2 and st3 off the sternal shield
– subapical ventral setal pair on tarsus IV are relatively long strong spikes
– six pairs of ventral opisthosomal setae
– five 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 half as long as the longest mesolateral setae
– cribrum does not extend to posterior end of anal shield
– paranal setae level with anal opening, paranal and postanal setae are unequal in length

References:
Knee, W. 2008. Five new species of Rhinonyssidae (Mesostigmata) and one new species of Dermanyssus
        (Mesostigmata: Dermanyssidae) from birds of Alberta and Manitoba, Canada. Journal of Parasitology, 94: 348-374.
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, 140: 364-379.

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