Figure 3. The localities where specimens of four Mesechthistatus species were collected. Open circle, locality of M. binodosus specimens; closed circle, locality of M. furciferus specimens; open square, locality of M. fujisanus specimens; closed square, locality of M. taniguchii specimens; closed star, localities of Parechthistatus and Hayashiechthistatus used as outgroup specimens for phylogenetic analysis. Locality numbers correspond to the number in Table 1 and the phylogenetic trees in Figure 4.