Hygrotus sylvanus (Fall, 1917)



Taxonomy & Nomenclature



Conservation Status

Last record: 1890

Rediscovered in 1979 or earlier (Daussin, 1979)

Last record: 1979 (Suckling et al. 2004)

One of a number of species that are thought to be extinct after having previously been rediscovered.





Biology & Ecology










Original scientific description:

Fall, H. C. (1917). New Dytiscidae. New York Entomological Society 25: 163-182.


Other references:

Anderson, R. D. (1976). A revision of the Nearctic species of Hygrotus groups II and III (Coleoptera: Dytiscidae). Ann. Ent. Soc. Amer. 69: 577-584.

Daussin, G. L. (1979). Rediscovery of Hygrotus sylvanus (Fall) (Coleoptera: Dytiscidae). Entomological News 90(4): 207-208.

Suckling, Kieran, Slack, Rhiwena and Nowicki, Brian. (2004). Extinct and the Endangered Species Act. Centre For Biological Diversity. 63 pp.


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