Published as part of Tojo, Koji, Miyairi, Ken, Kato, Yuto, Sakano, Ayana & Suzuki, Tomoya, 2021, A description of the second species of the genus Bleptus Eaton, 1885 (Ephemeroptera: Heptageniidae) from Japan, and phylogenetic relationships of two Bleptus mayflies inferred from mitochondrial and nuclear gene sequences, pp. 333-360 in Zootaxa 4974 (2) on page 341, DOI: 10.11646/zootaxa.4974.2.5, http://zenodo.org/record/4775688

FIGURE 1. Sampling localities of the Bleptus mayflies, and the distribution area of each detected clade (clade I–V) based on data of the mitochondrial DNA COI, 16S rRNA, and nuclear DNA ITS2 regions. Refer to Table 1 for locality numbers, sample numbers, and GenBank accession numbers, and to Figures 15–18 for genetic relationships between these clades.