Fig 104 (a). Ptilonyssus carduelis female dorsal habitus.

Fig 104 (b). Ptilonyssus carduelis female dorsum.

Fig 104 (c). Ptilonyssus carduelis female venter.

North American host records:
Fringillidae:
Carduelis flammea, Common Redpoll (Wilson and Haas 1980; Knee et al. 2008)
Loxia leucoptera, White-winged Crossbill (Knee et al. 2008)

Diagnostic characteristics:
– two dorsal shields, podosomal and fused opisthosomal and pygidial shields
– posterior margin of podosomal shield is trilobed
– opisthosomal shield is longer than wide, but not twice as long as wide
– opisthosomal shield without lateral excavation
– posterior margin of opisthosomal shield is rounded, occasionally it is invaginated forming an inverted V indent
– anterior margin of opisthosomal shield is medially straight with anterolateral projections
– st1 st2 and st3 on the sternal shield
– subapical ventral setal pair on tarsus IV are relatively long strong spikes
– five pairs of ventral opisthosomal setae
– four 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 as long or almost as long as the longest mesolateral setae
– paranal setae level with anal opening, paranal and postanal setae are almost equal in length

Refereneces:
Fain, A. 1962. Les acariens parasites nasicoles des oiseaux de Belgique. I. Deux especes nouvelles de
        Rhinonyssidae (Mesostigmata) avec une liste des especes connues de Belgique. Bulletin and Annales de
        la Societe Royale d’Entomologie de Belgique, 98: 252-270.
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.Wilson, N., and Haas, G.E. 1980. Ectoparasites (Mallophaga, Diptera, Acari) from
        Alaskan birds. Proceedings of the Entomological Society of Washington, 82: 541-552.

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