Molecular Phylogenetic analysis by Maximum Likelihood Bayesian Analysis, based on parasite DNA sequences (18S rRNA gene). Phylogenetic relationships of blood parasites found in side-blotched Lizards (SBL) Uta stansburiana on San Benito Oeste Island. Posterior probabilities of the nodes are shown. Details of the reference sequences, including blood parasite and host species identity and code and location, are given in Table 1. The tree is drawn to scale, with branch lengths measured in the number of substitutions per site. The analysis involved 48 nucleotide sequences (one outgroup, 19 sequences from this study and 28 reference sequences).