The analysis of mitochondrial COI data for the European-Centroasian montaneUdeaalpinalisspecies group finds deep intraspecific splits. Specimens ofU.austriacalisandU.rhododendronalisseparate into several biogeographical groups. These allopatric groups are not recovered in the analyses of the two nuclear markers wingless and Elongation factor 1-alpha, except forU.austriacalisfrom the Pyrenees and the French Massif Central. The latter populations are also morphologically distinct and conspecific withScopuladonzelalisGuenée, 1854, which is removed from synonymy and reinstated asUdeadonzelalis(Guenée, 1854)stat. rev.Furthermore,Udeaaltaica(Zerny, 1914),stat. n.from the Mongolian central Altai mountains,U.juldusalis(Zerny, 1914),stat. n.from the Tian Shan mountains of Kazakhstan, Kyrgyzstan and NW China, andU.plumbalis(Zerny, 1914),stat. n.from the Sayan Mountains of Northern Mongolia are raised to species level, and lectotypes are designated. Evidence of introgression ofU.alpinalisintoU.uliginosalisat three localities in the Central Alps is presented. A screening forWolbachiausing the markers wsp, gatB and ftsZ was negative for theU.alpinalisspecies group, butWolbachiawas found in single specimens ofU.fulvalisandU.olivalis(both in theU.numeralisspecies group). We do not find evidence for the conjecture of several authors of additional subspecies inU.rhododendronalis, and synonymiseU.rhododendronalisluquetalisLeraut, 1996,syn. n.andU.r.ventosalisLeraut, 1996,syn. n.with the nominalU.rhododendronalis(Duponchel, 1834).
