An Incomplete European Barcode Library Has a Strong Impact on the Identification Success of Lepidoptera from Greece
2022
Peter Huemer | Marko Mutanen
Species identification by means of DNA barcodes depends essentially on the scope and quality of a relevant reference library. The first analysis of a large number (about 600 morphospecies) of southern European Lepidoptera (Greece: Peloponnese) shows both the advantages and disadvantages with regard to a reliable identification of Mediterranean species. We determined 946 DNA barcode sequences from 47 families, of which 929 sequences from 46 families were successfully assigned to a Barcode Index Number (BIN) in the global Barcode of Life Data Systems (BOLD) database. A species level identification for 485 BINs representing 477 Linnaean names was successful. These taxa include 34 new records for Greece. However, 128 BINs (c. 20% of the inventory) could not be attached to a Linnaean name from referenced sequences available in BOLD. Of these BINs, 99 are new and hence represent unique records for BOLD. Intra- and inter-BIN divergences are presented and discussed. An initial and preliminary in-depth analysis of randomly selected species indicates an incomplete DNA barcode library in terms of Linnean taxa, in addition to a considerable number of probably undescribed species. It is therefore strongly recommended that the already advanced European barcode library of Lepidoptera should be supplemented with not-yet-sequenced taxa from the Mediterranean.
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