Bayesian inference tree based on 658-bp of the gene COI for the entire Polyommatus aroaniensis species complex. Node posterior probabilities (0.80 and higher) are written on the branches. The scale bar indicates the length of 0.005 substitutions/site. Main clades are highlighted and COI haplogroups and karyotype numbers indicated: P. orphicus orphicus/eleniae (orph1, n=41–42), P. orphicus Albania (orph2, n =42), P. aroaniensis (aroa1, n=47–48), P. timfristos (aroa2, n=38) and P. lurae sp. nov (aroa3, n=42–43). Brown dots next to specimens within the orph2 clade indicate P. lurae × P. orphicus potential hybrids (n=43–44) found in the contact zone or dispersing.