Abstract
Ilyocryptus sarsi Stingelin, 1913, earlier regarded as a subspecies of I. sordidus Liévin, 1848, is a valid species, relatively common and widely distributed in South America. It is here redescribed based on material from a number of localities in Brazil. The type specimen is lost, and therefore a neotype is selected from Sars' (1901) specimens, hatched from dried mud from Ipiranga, Paraná, Brazil. Differences between I. sarsi, I. sordidus and some other species are indicated. Recent problems in the systematics of the sordidus-group are discussed. The validity of all species in the sordidus-group described after Liévin and Stingelin is in need of checking.
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Kotov, A.A., Dumont, H.J. & Van Damme, K. Redescription of Ilyocryptus sarsi Stingelin, 1913. Hydrobiologia 472, 207–222 (2002). https://doi.org/10.1023/A:1016373226707
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DOI: https://doi.org/10.1023/A:1016373226707