Jurilj 1949 wrote: Plagiodiscus Jur. (nov. gen.), non autem Plagiodiscus Grun. et Eul., quod genus retractatum est. (Translation "But not Plagiodiscus Grun. et Eul. which is removed"). A Latin diagnosis is given p. 23. Three species originally included: P. glaber Jur., P. echinatus Jur., P. costatus Jur., no generitype designated; Round, Crawford & Mann, p. 697, give Plagiodiscus glaber Jurilj 1948 as the type.