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Among the world’s most dazzling damselflies, the superfamily ''[[Calopterygines|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. | Among the world’s most dazzling damselflies, the superfamily ''[[Calopterygines|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. | ||
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== {{PHYLO}} résumée == | |||
{{ony}} | |||
├── ''[[Calopterygidae]]'' {{Sstro}} [''hic''] | |||
│ | |||
└── • | |||
├── ''[[Hetaerinidae]]'' ({{Ss}} 2026) [''hic''] | |||
│ | |||
└── • | |||
├── ''[[Euphaeidae]]'' | |||
│ | |||
└── ''[[Chlorocyphidae]]'' | |||
{{off}} | |||
Dernière version du 8 septembre 2026 à 22:22
[Deliry C. 2026] – Katnoria N. & al. 2026 - In : Odonates du Monde (Histoires Naturelles) (2004-[2026]) – Version 87936 du 08.09.2026. – 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
Résumé (traduction libre)
Parmi les demoiselles les plus éblouissantes du monde, la superfamille Calopterygoidea est réputée pour ses ailes superbement ornées et densément nervurées. Cette étude utilise le codage à barres ADN pour mettre en lumière la diversité cachée, les relations évolutives et les complexités taxonomiques au sein de ce groupe charismatique. Au total, 106 séquences du gène mitochondrial COI, représentant 69 espèces, ont été analysées, dont 17 espèces séquencées pour la première fois et ajoutées aux bases de données génétiques mondiales. L'analyse a révélé une composition nucléotidique très riche en AT (62,9 %), une signature génomique caractéristique de la superfamille. Les valeurs de divergence génétique ont montré un écart de code-barres net, avec une variation intraspécifique comprise entre 0,2 et 2,0 %, tandis que les divergences interspécifiques et intergénériques variaient respectivement entre 2,1 et 15,9 % et entre 12,4 et 32,2 %, ce qui souligne l’efficacité du code-barres ADN pour distinguer les espèces. Les analyses phylogénétiques ont mis en évidence des schémas évolutifs complexes, révélant que les Calopterygidae sont polyphylétiques, les Chlorocyphidae paraphylétiques, et les Euphaeidae la seule lignée monophylétique. Les Calopterygidae ont présenté la plus grande diversité génétique (Eta = 311), ce qui suggère une longue histoire évolutive marquée par une diversification génétique importante. Fait intrigant, la divergence intraspécifique inhabituellement élevée et le placement phylogénétique ambigu chez des espèces telles que Matrona nigripectus, Mnais costalis, Mnais pruinosa, Matrona cyanoptera et Matrona basilaris indiquent d’éventuelles erreurs d’identification, ce qui souligne la nécessité d’une réévaluation taxonomique minutieuse.
Abstract
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.
Phylogénétique résumée
├── Calopterygidae s. str.° [hic] │ └── • ├── Hetaerinidae (sensu 2026) [hic] │ └── • ├── Euphaeidae │ └── Chlorocyphidae |
