Multilocus species delimitation and hybridization test of the five Lucanus taxa.
The species delimitations suggested by *BEAST and PTP are shown at the right side of the phylogram. STRUCTURE analysis assumed the optimal Bayesian clustering (K = 2) of the addressed five taxa. Each bar stands for a single individual. Morphological taxa are represented by different colors. The two groups found in L. k. piceus by PTP are represented by a dashed line.