Clarifying the Phylogeny and Systematics of the Recalcitrant Tribe Leptocircini (lepidoptera: Papilionidae) with Whole-Genome Data
SYSTEMATIC ENTOMOLOGY(2024)
Abstract
Leptocircini is a dazzling tribe of Papilionidae, including dragontails, kite swallowtails and swordtails. This tribe is widely distributed, notably throughout the tropics of Africa, Southeast Asia and the Americas, making it a fascinating model in evolutionary biology. However, despite accounting for 25% of the global swallowtail butterfly diversity, Leptocircini have been surprisingly neglected in phylogenetic analyses. This has left unanswered questions about their taxonomy and systematics. Here, we present a new taxonomic working list for Leptocircini, featuring 162 valid species. Using a combination of long and short reads data, we produced five new reference genomes, and we generated highly covered and scaffolded whole genomes for 148 individuals to infer densely sampled phylogenetic hypotheses. Based on mitochondrial or thousands of nuclear genes and multiple phylogenetic approaches, a robust phylogenomic tree is recovered, representing approximately 90% of the known species, which allowed examination of several key phylogenetic hypotheses. We found the monotypic genus Protographium Munroe to be sister of genus Graphium Scopoli. Additionally, we found that subgenus Paranticopsis Wood-Mason and de Nic & eacute;ville is nested within subgenus Pathysa Reakirt, which we found is likely attributed to an ancient gene flow. We therefore synonymize Paranticopsis, syn.rest. To keep a consistent approach to subgeneric classification across the tribe and family, we devided genus Eurytides H & uuml;bner into three subgenera: Mimoides Brown, Eurytides sensu stricto and Protesilaus Swainson. This led to several taxonomic implications: Asiographium M & ouml;hn, syn.rest., Boreographium Grishin, syn.n., Hyalaus Grishin, syn.n. and Neographium M & ouml;hn, syn.n. are synonymized with Eurytides (Mimoides); and Eurygraphium M & ouml;hn, syn.rest. is synonymized with Eurytides (Eurytides). Our analyses finally raised concerns about potential taxonomic inflation in two species-groups within Graphium and Eurytides (Protesilaus). This study illuminates the clade's evolutionary history and paves the way for further research on this diverse group of charismatic butterflies.
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Key words
<italic>Eurytides</italic>,gene flow,<italic>Graphium</italic>,incomplete lineage sorting,phylogenomics,reference genome,scaffolding
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