Fig 98 (a).Ptilonyssus tyrannus female dorsal habitus.

Fig 98 (b).Ptilonyssus tyrannus female dorsum.

Fig 98 (c). Ptilonyssus tyrannus female venter.

Ptilonyssus (=Tyranninyssus) tyrannus (Brooks and Strandtmann, 1960)

North American host records:
Contopus borealis, Olive-sided Flycatcher(Brooks and Strandtmann 1969; Hyland and Moorhouse 1970; Pence 1975)
Contopus sordidulus, Western Wood-Peewee (Brooks and Strandtmann 1969; Hyland and Moorhouse 1970; Pence 1975; Knee et al. 2008)
Contopus virens, Eastern Wood-Peewee (Pence 1972, 1975)
Empidonax alnorum, Alder Flycatcher (Hyland and Moorhouse 1970; Pence 1975)
Empidonax flaviventris, Yellow-bellied Flycatcher (Hyland and Moorhouse 1970; Pence 1975)
Empidonax minimus, Least Flycatcher (Brooks and Strandtmann 1969; Hyland and Moorhouse 1970; Pence 1975; Spicer 1987)
Empidonax traillii, Willow Flycatcher(Hyland and Moorhouse 1970; Pence 1975)
Empidonax virescens, Acadian Flycatcher (Pence 1972, 1975)
Sayornis phoebe, Eastern Phoebe (Pence 1972, 1975; Knee et al. 2008)
Sayornis saya, Say’s Phoebe (Brooks and Strandtmann 1969; Hyland and Moorhouse 1970; Pence 1975)
Tyrannus melancholicus, Tropical Kingbird (Hyland and Moorhouse 1970)

Diagnostic characteristics:
– two dorsal shields, podosomal and fused opisthosomal and pygidial shields- posterior margin of podosomal shield with a medial lobe and lacking lateral lobes
opisthosomal shieldis twice as long as wide
– lateral excavation of the posterior portion of the opisthosomal shield
– posterior margin of opisthosomal shield is rounded
– anterior margin of opisthosomal shield is straight
– st1 st2 and st3 off the sternal shield
– subapical ventral setal pair on tarsus IV are relatively long strong spikes with a rounded terminus
– six 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 as long or almost as long as the longest mesolateral setae
– dorsum of genu III with oblique row of four stout spine setae close together
– paranal setae anterior to anal opening, paranal and postanal setae are unequal in length

Brooks, D.L., and Strandtmann, R.W. 1960. The nasal mites (Acarina) of some West Texas
        flycatchers (Tyrannidae). Journal of Parasitology, 46: 418-432.Hyland, K.E., and Moorhouse, A. 1970. Nasal mites from Mexican birds. I. Rhinonyssidae
        (Mesostigmata) from the host family Tyrannidae. Acarologia, 12: 43-58.
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 III. The genus Ptilonyssus
        (Dermanyssidae: Rhinonyssinae) with description of a new species. Journal of
        Parasitology, 58: 790-795.
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.