 Molecular analysis showed that "Megasporoporia" nested within the "core polyporoid clade", a grouping of polypore fungi roughly equivalent to a more narrowed but still broad concept of the family Polyporaceae.Later analysis that included the more recently described Chinese species revealed that the genus was not monophyletic and could be divided into four clades.In 2013, two of these monophyletic clades were segregated from "Megasporoporia" and circumscribed as the new genera "Megasporia" and "Megasporoporiella".