Phylogenetic tree inferred from a concatenated alignment of SSU and LSU rRNA genes under the GTR+F+R5 model. Branch support is given by SH-aLRT/UFBOOT2/Bayesian posterior probabilities. Black circles indicate support values ≥ 99% or ≥ 0.9 and dashes indicate values < 50% or < 0.5. Black circles at branches show ≥ 99% and ≥ 0.9 support in all analyses. Sequences of the here newly-described species are marked in bold. For the nephridiophagids obtained from the two Lucihormetica species and from Archimandrita tessellata, only the SSU rRNA gene sequence was available for tree inference.