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. 2023 Apr 25:1159:69-86.
doi: 10.3897/zookeys.1159.95225. eCollection 2023.

DNA barcoding and morphology reveal European and western Asian Arctiavillica (Linnaeus, 1758) as a complex of species (Lepidoptera, Erebidae, Arctiinae)

Antonio S Ortiz  1 , Rosa M Rubio  1 , Josef J de Freina  2 , Juan J Guerrero  1 , Manuel Garre  1 , José Luis Yela  3
Affiliations

DNA barcoding and morphology reveal European and western Asian Arctiavillica (Linnaeus, 1758) as a complex of species (Lepidoptera, Erebidae, Arctiinae)

Antonio S Ortiz et al. Zookeys. .

Abstract

Currently, the genus Arctia Schrank, 1802 includes approximately 16 species in the Palaearctic region, depending on the taxonomic interpretation. Here, populations of the Arctiavillica (Linnaeus, 1758) morphospecies complex were studied from Europe to the Middle East (Turkey, northern Iran) by molecular methods. Morphological treatment has traditionally revealed the presence of five nominal taxa: A.villica (Linnaeus, 1758), A.angelica (Boisduval, 1829), A.konewkaii (Freyer, 1831), A.marchandi de Freina, 1983, and A.confluens Romanoff, 1884. The molecular approach tests whether they represent well-delimited species. Subsequently, this study corroborates the suitability of the mitochondrial cytochrome c oxidase subunit 1 (COI) marker sequence for species delimitation. In total, 55 barcodes of the Arctiavillica complex were compared, and two molecular species delimitation algorithms were applied to reveal the potential Molecular Operational Taxonomic Units (MOTUs), namely the distance-based Barcode Index Number (BIN) System, and the hierarchical clustering algorithm based on a pairwise genetic distances approach using the Assemble Species by Automatic Partitioning (ASAP). The applied ASAP distance-based species delimitation method for the analysed dataset revealed an interspecific threshold of 2.0-3.5% K2P distance as suitable for species identification purposes of the Iberian A.angelica and the Sicilian A.konewkaii and less than 2% for the three taxa of the A.villica clade: A.villica, A.confluens, and A.marchandi. This study contributes to a better understanding of the taxonomy of the genus Arctia and challenges future revision of this genus in Turkey, the Caucasus, Transcaucasia as well as northern Iran using standard molecular markers.

Keywords: Arctia; COI; DNA barcoding; Europe; species delimitation; western Asia.

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Figures

Figure 1.
Figure 1.
Distribution of Arctia samples sequenced. Note that each point may represent more than one specimen. The map was created using www.simplemappr.net.
Figure 2.
Figure 2.
Maximum Likelihood tree of Arctia species, obtained from 59 nucleotide COI sequences. Bootstrap values > 50% are provided at major nodes. Old and new BINs are indicated for each node. ASAP species delimitation result is indicated by vertical and coloured bars.
See this image and copyright information in PMC

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