ISSN 1911-2173

Fig 107 (a). Ptilonyssus echinatus female dorsal habitus.

Fig 107 (b). Ptilonyssus echinatus female dorsum.

Fig 107 (c). Ptilonyssus echinatus female venter.

North American host records:
Hirundo pyrrhonota, Cliff Swallow (George 1961; Pence 1975; Spicer 1987; Knee et al. 2008)
Hirundo rustica, Barn Swallow (George 1961; Pence 1972, 1975; Spicer 1987; Knee et al. 2008)
Riparia riparia, Sand Martin (Wilson 1964; Pence 1975)
Tachycineta bicolor, Tree Swallow (Pence 1975; Knee et al. 2008)

Diagnostic characteristics:
– two dorsal shields, podosomal and pygidial shields- genital shield arrow-shaped, pointed terminus, 10 times longer than wide
– pygidial shield in two fragments with subposterior setal pair on the fragments
– sternal shield absent
– posterior margin of podosomal shield either medially straight with lateral lobes, or trilobed, shield highly reduced
– subapical ventral setal pair on tarsus IV are relatively long strong spikes
– seven or more pairs of ventral opisthosomal setae
– at least 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 as long or almost as long as 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
        Bibliotheque Scientifique de l’Ouest, 2: 121-143.
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. 1972. The nasal mites of birds from Louisiana IV. The genus Ptilonyssus
        (Dermanyssidae: Rhinonyssinae) with a description of two new species.
        Journal of Parasitology, 58: 1162-1169.
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.
Spicer, G.S. 1987. Prevalence and host-parasite list of some nasal mites from birds (Acarina:
        Rhinonyssidae, Speleognathidae). Journal of Parasitology, 73: 259-264.
Wilson, N. 1964. New records and descriptions of Rhinonyssidae, mostly from New
        Guinea (Acarina: Mesostigmata). Pacific Insects, 6: 357-388.