DNA barcodes of COI and similarly sized sequences from cytb demonstrate three distinct geographically and genetically distinct groups within the neotropical bat species Sturnira lilum. Individual variation between cytochrome b sequences is greater than those within barcode sequences but resolution is internally consistent. The trees are assembled by using K2P genetic distances  in a neighbor-joining method . Bootstrap values (1000 replicates) for major geographic lineages are shown above each branch. Photo of Sturnira lilum courtesy of Royal Ontario Museum.
Hajibabaei et al. BMC Biology 2007 5:24 doi:10.1186/1741-7007-5-24