Maximum Likelihood tree showing DNA barcode variation within ACG species of Calolydella. The inter- and intra-specific variation within the DNA barcode region for the 23 species of Calolydella from ACG is illustrated using a Maximum Likelihood tree based on the General Time Reversible model (GTR) (Nei and Kumar 2000). GTR was selected due to the lowest BIC scores (Bayesian Information Criterion) of the Maximum Likelihood fits of 23 different nucleotide substitution models run in MEGA6 (Tamura et al. 2013). Tip labels include species name|specimen code|host family of each species. A habitus image in lateral view of each holotype is presented with the tree.