Pseudococcidae Heymons, 1915
Tridiscus biumbelicatus De Lotto, 1964
Tridiscus distichlii (Ferris, 1918)
Tridiscus littoralis (James, 1936)
Tridiscus matildae Kosztarab, 1996
Tridiscus multiorbis Ferris, 1953
Tridiscus oetvoesi Kozár & Footit, 1992
Tridiscus sporoboli (Cockerell, 1902)
Tridiscus stenosomus De Lotto, 1964
