Katnoria N. & al. 2026
[Deliry C. 2026] – Katnoria N. & al. 2026 - In : Odonates du Monde (Histoires Naturelles) (2004-[2026]) – Version 87745 du 07.09.2026. – odonates.net
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Katnoria N. & al. 2026 - Beyond the iridescens wing : using COI barcordes to reveal hidden diversity in superfamily Calopterygoidea damselflies. - Munis Entomology & Zoology, 21 (suppl.), septembre 2026 : 4720 - 4755. - BiB
Abstract (links above)
Among the world’s most dazzling damselflies, the superfamily Calopterygoidea is renowned for its exquisitely ornamented and densely veined wings. The present study employs DNA barcoding to unravel the hidden diversity, evolutionary relationships, and taxonomic complexities within this charismatic group. A total of 106 mitochondrial COI gene sequences representing 69 species were analysed, including 17 species sequenced for the first time and added to global genetic databases. The analysis revealed a pronounced AT- rich nucleotide composition (62.9%), a characteristic genomic signature of the superfamily. Genetic divergence values displayed a clear barcode gap, with intraspecific variation ranging from 0.2-2%, while interspecific and intergeneric divergences ranged from 2.1-15.9% and 12.4-32.2%, respectively, highlighting the effectiveness of DNA barcoding in species discrimination. Phylogenetic analyses exposed complex evolutionary patterns, recovering Calopterygidae as polyphyletic, Chlorocyphidae as paraphyletic, and Euphaeidae as the only monophyletic lineage. Calopterygidae exhibited the highest genetic diversity (Eta = 311), suggesting an extensive evolutionary history shaped by substantial genetic diversification. Intriguingly, unusually high intraspecific divergence and ambiguous phylogenetic placement in species such as Matrona nigripectus, Mnais costalis, Mnais pruinosa, Matrona cyanoptera and Matrona basilaris indicate possible misidentifications, emphasizing the need for careful taxonomic re-evaluation.
