Abstract
Descriptions are provided for the following 28 new species of Pravistylus (Naudé) from Southern Africa: P. bidentidiscus sp. n., P. brachyphysis sp. n., P. brachyplacus sp. n., P. caenophallus sp. n., P. deltoplacus sp. n., P. dentidiscus sp. n., P. digitidiscus sp. n., P. indistinctidiscus sp. n., P. interdiscus sp. n., P. lobus sp. n., P. longitrunculus sp. n., P. macropygeus sp. n., P. mecistoplacus sp. n., P. mecophysis sp. n., P. micropygeus sp. n., P. mollidiscus sp. n., P. mutilidiscus sp. n., P. odontiophallus sp. n., P. odontopygeus sp. n., P. oxyphysis sp. n., P. pelorophallus sp. n., P. pollediscus sp. n., P. scolophallus sp. n., P. scolopygeus sp. n., P. serratus sp. n., P. tanyoplacus sp. n., P. trunculidiscus sp. n. and P. varicudiscus sp. n. Redescribed species include the type species, P. eductus (Naudé, 1926) and P. exquadratus (Naudé, 1929). Deltocephalus africanus Naudé, 1926 is a new synonym of P. exquadratus (Naudé, 1929). Pravistylus is assigned to the tribe Paralimnini. A key is provided for the identification of species.References
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