Statistical parsimony (95%) network of 68 mitochondrial DNA haplotypes identified for Zoogoneticus quitzeoensis. The network was grouped into nesting clades. Each line in the network represents a single nucleotide substitution. Small circles indicate undetected intermediate haplotype states. Ovals represent haplotypes with more than one specimen. The number 21 represents the number of mutational steps between the two upper clades.