Ptilonyssus angrensis (Castro, 1948)

Fig 93 (a).Ptilonyssus angrensis female dorsal habitus.

Fig 93 (b).Ptilonyssus angrensis female dorsum.

Fig 93 (c).Ptilonyssus angrensis female venter.

Ptilonyssus 
(=Rhinonyssus) angrensis (Castro, 1948)

North American host records:
Hirundinidae:
Hirundo fulva, Cave Swallow(Pence 1975)
Hirundo pyrrhonota, Cliff Swallow (Pence 1975)
Progne subis, Purple Martin (Pence 1972, 1975; Knee et al. 2008)
Tachycineta bicolor, Tree Swallow (Pence 1975)

Diagnostic characteristics:
– one dorsal shield, podosomal shield
– sternal shield absent
– posterior margin of podosomal shield with a medial lobe and lacking lateral lobes
– peritreme absent
– subapical ventral setal pair on tarsus IV are relatively short spikes proximally inflated
– seven or more pairs of ventral opisthosomal setae
– two 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
– cribrum absent or unnoticeable
– paranal setae level with anal opening, paranal and postanal setae are equal or almost equal in length

Note:
– 
Ptilonyssus species are typically characterized as having peritremes, the exceptions are
P. angrensis,
 P. vireonis, and P. hoseini (Fain and Aitken, 1967) all of which lack
peritremes. These three species are still considered to be Ptilonyssus species because
of the ventroterminal placement of the anus, and the terminal placement of the gnathosoma.

References:
Castro, M.P. 1948. Reestruturacao generica da familia Rhinonyssidae Vitzthum 1935 (Acari:
        Mesostigmata: Gamasides) e descraicao de algumas especies novas. Arquivos do Instituto
        Biologico, 18: 253-284.
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.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.

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