There are 9 families of Diplura found across the world, consisting of about 800 species. In Australia just 5 of these families are represented with only 31 different species. The families Campodeidae and Projapygidae contain those species with filamentous cerci while those in the families Japygidae, Heterojapygidae and Parajapygidae have pincer-like cerci. Follow the links below to find out more about the different families of diplurans. Those in bold represent the dipluran families present in Australia.