Diagnosing and (Branchiopoda: Spinicaudata: Limnadiidae).

and are both strongly supported, monophyletic limnadiid lineages based on molecular studies. However, defining the two taxa morphologically relies on the presence/absence of a subcercopodal spiniform projection; otherwise there is considerable overlap and confusion in morphological characters between the two taxa. The most discriminatory of these characters are examined here and applied to Australasian species. As a result, five species are transferred to . These characters are then applied to world species and other limnadiid genera which share key features with .