Nuclear allele median-joining network of POMC (A. 570 bp), BDNF (B. 672 bp), and RAG1 (C. 941 bp) nuclear gene haplotypes of the Ingerophrynus parvus species complex. Circle sizes are proportional to the number of samples/sequences; small open circles indicate hypothetical haplotypes (alleles); bars on branches correspond to the number of mutation steps. For voucher specimen information and GenBank accession numbers, see Suppl. material 1: table S2. Circle color corresponds to colors in Figs 1, 2, 4, 5.