Figure 1.

The phylogenetic relationships of BI and ML trees using 28 species of Ephemeroptera, including H. rigida (OL678102) and based on the nucleotide dataset of the 13 mt PCGs. Siphluriscus chinensis (HQ875717 and MF352165) was used as the outgroup. The numbers above branches specify posterior probabilities as determined from BI (left) and bootstrap percentages from ML (right). The GenBank accession numbers of all species are shown in the figure. The long-branch attractions of Baetidae and Teloganodidae have been cut for esthetics.