Thermacarus nevadensis Marshall, 1928

Nevada water mite



Taxonomy & Nomenclature



Conservation Status

After 12 July 1972 (Collins et al. 1976:1223)

It seems that this species still exists (see [url=]here[/url]). Although, whether it was actually rediscovered or was mistakenly thought to be extinct but was never really threatened with extinction is unclear at this stage. It was apparently still alive in mid-July 1972 (Collins et al. 1976:1223), and so its extinction must have taken place quite recently, if indeed it did. Any information on its current conservation status would be very welcomed.



Nevada (& Utah?), USA












Original scientific description:

Marshall, Ruth. (1928). A New Species of Water Mite from Thermal Springs. Psyche 35: 92-97.



Other references:

Baker, G. T. (1985). External morphology of Thermacarus nevadensis Marshall (Hydracarina: Hydraphantoidea: Thermacaridae). Zoologischer Anzeiger 215(5-6): 391-398.

Brues, Charles T. (1932). Further Studies on the Fauna of North American Hot Springs. Proceedings of the American Academy of Arts and Sciences 67(7): 185-303.

Nicholas C. Collins, Rodger Mitchell and Richard G. Wiegert. (1976). Functional Analysis of a Thermal Spring Ecosystem, with an Evaluation of the Role of Consumers. Ecology 57(6): 1221-1232. [Abstract]

Mitchell, R. (1962). The growth of Thermacarus nevadensis Marshall (Acari, Hydrachnellae). Zoologischer Anzeiger 168(7-10): 269-275.

Nyquist, D. (1965). An extension of the range of Thermacarus nevadensis Marshall. Proceedings of the Utah Academy of Sciences, Arts, and Letters 42(2): 177. [published in 1966?]


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