Maximum clade credibility tree based on the trimmed alignment of the combined 18S rDNA and 28S rDNA. Node support values: posterior probability/nonparametric bootstrap (100 replicates)/aLRT (1000 replicates); blue bars indicate 95% HPD intervals of the age estimates, age estimate in red above the branches. Nodes with less than 75% bootstrap or 0.7 posterior probability support are collapsed. Habitus of Sphaeridia pumilis and M. psocoides represented next to the corresponding labels (M. psocoides drawing modified after Fjellberg 1989).