Neighbor-joining (NJ) phylogram of nuclear ITS-1. The four numbers on each branch indicate greater than 50% bootstrap support values for the branch as determined by NJ, maximum parsimony, and maximum likelihood methods, and a Bayesian clade credibility value of greater than 70%. Asterisks indicate values with less than 50% bootstrap support values, less than 70% Bayesian support values, or no support. We used red branch lines for the clades of D. galeata, blue branch lines for the clades of D. dentifera, red characters for the specimens with D. galeata mtDNA, and blue characters for the specimens with D. dentifera mtDNA. Amr39a in the D. dentifera clade was a recombinant sequence between lineage D4 and the D. dentifera clade.