Diplodoma adspersella Heinemann 1870, syn. nov.

Diplodoma adspersella Heinemann, 1870 syn. nov. DNA barcoding analyses we carried out, highlighted a high COI diversification of Diplodoma laichartingella and D. adspersella without a clear separation between them. In the Neighbour-Joining tree of European Diplodoma (Fig. 20), D. adspersella and D. laichartingella present in BOLD and identified by the authors on the basis of morphology, are not coherently separated by barcoding. One Slovenian specimen, that refers to a larva and its case, was morphologically identified as D. adspersella and included in a BIN (BOLD:AAP9669) together with Slovenian and Austrian D. laichartingella specimens identified using wing pattern. In other two cases the name D. adspersella has been attributed by wing patterns to all the specimens composing the BINs, but these BINs are intermixed with those of D. laichartingella, making a mtDNA-based differentiation of these taxa unlikely. In light of our genetic analyses, that further weaken the validity of D. adspersella questioned by several authors due to the lack of morphological differences, we propose Diplodoma adspersella Heinemann, 1870 as a junior synonym of Diplodoma laichartingella (Goeze, 1783).