Uchidastygacarus

 Unidentified species of Uchidastygacarus, from Biodiversity Institute of Ontario Photography Group.

Belongs within: Neohydrachnidia.

The Uchidastygacaridae are a family of subterranean freshwater mites found in Asia and North America. They are flattened, with punctate dorsal and ventral shields, and have three pairs of genital acetabula with the third pair triangular and differing in shape from the anterior rounded pairs.

<==Uchidastygacarus Imamura 1956 [Uchidastygacaridae, Uchidastygacarinae]S86
    |  i. s.: U. acadiensisWL09
    |--U. (Uchidastygacarus)S86
    |    |--U. (U.) akitaensis Imamura 1956S86
    |    |--U. (U.) akiyoshiensis Imamura 1959S86
    |    |--U. (U.) imamurai Cook 1963S86
    |    |--U. (U.) palmifer Imamura 1959S86
    |    |--U. (U.) rotundus Imamura 1956S86
    |    `--U. (U.) ryukyuensis Imamura 1961S86
    `--U. (Imamurastygacarus Cook 1974)S86
         |--U. (I.) minutus Imamura 1956S86
         `--U. (I.) ovalis Cook 1974S86

*Type species of generic name indicated

References

[S86] Schwoerbel, J. 1986. Acari: “Hydrachnellae”. In: Botosaneanu, L. (ed.) Stygofauna Mundi: A Faunistic, Distributional, and Ecological Synthesis of the World Fauna inhabiting Subterranean Waters (including the Marine Interstitial) pp. 652–696. E. J. Brill/Dr W. Backhuys: Leiden.

[WL09] Walter, D. E., E. E. Lindquist, I. M. Smith, D. R. Cook & G. W. Krantz. 2009. Order Trombidiformes. In: Krantz, G. W., & D. E. Walter (eds) A Manual of Acarology 3rd ed. pp. 233–420. Texas Tech University Press.

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