Dorsal and ventral views of Chauliacia securigera, with close-up of ambulacral disc, by Anthonie C. Oudemans.

Belongs within: Psoroptidia.

The Eustathiidae are a family of mites only found living on the feathers of swifts (Apodi) (Moss et al. 1977).

Characters (from OConnor 2009): Genital setae (g) absent. Trochantes I–III without setae; solenidia ς present on genua I–III; proral setae present on all setae, flattened apically; no seta on tarsus I longer than solenidion ω3; tarsi III and IV each with three ventral setae; pretarsal ambulacral discs well developed; condylophores L-shaped.

    |--Alleustathia ungulata Gaud & Atyeo 1967MPA77
    |--Odonteustathia macrognatha Gaud & Atyeo 1967MPA77
    |--Microchelys delicatula (Trouessart 1899)MPA77
    |--Echineustathia tricapitosetosa (McDaniel 1962)MPA77
    |--Rhynchocaulus paradoxus Gaud & Atyeo 1967MPA77
    |--Leptolichus amblycercus Gaud & Atyeo 1967MPA77
    |    |--E. cultrifera (Robin 1868)MPA77
    |    `--E. oxycerca Gaud & Atyeo 1967MPA77
    |    |--C. canarisi Gaud & Atyeo 1967MPA77
    |    `--C. securigera (Robin 1877)MPA77
         |--N. miniscula Gaud & Atyeo 1967MPA77
         |--N. ocellata Gaud & Atyeo 1967MPA77
         `--N. selenura (Trouessart 1898)MPA77

*Type species of generic name indicated


[MPA77] Moss, W. W., P. C. Peterson & W. T. Atyeo. 1977. A multivariate assessment of phenetic relationships within the feather mite family Eustathiidae (Acari). Systematic Zoology 26 (4): 386–409.

OConnor, B. M. 2009. Cohort Astigmatina. In: Krantz, G. W., & D. E. Walter (eds) A Manual of Acarology 3rd ed. pp. 565–657. Texas Tech University Press.

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