Phylogenetic tree of <i>cyt</i> b gene sequences among species.

<p>Leishmanial <i>cyt</i> b genes were amplified and sequenced from flagellates-positive sand flies, <i>Lutzomyia (Lu</i>.<i>) yuilli yuilli</i> (1, 4, 7, 8, 9, 11, 12, 15, and 16) and <i>Lu</i>. <i>davisi</i>, and a phylogenetic analysis of <i>cyt</i> b gene sequences was performed by the neighbor-joining method together with sequences from 12 <i>Leishmania</i> and 2 <i>Endotrypanum</i> species. The scale bar represents 0.05% divergence. Bootstrap values are shown above or below branches.