Genomics-guided refinement of butterfly taxonomy

Area of Science:

• Entomology and evolutionary biology
• Comparative genomics
• Taxonomy and systematics

Background:

• Comparative genomic exploration of worldwide butterfly fauna is ongoing.
• Phylogenetic analyses using protein-coding genes from whole genome shotgun sequences provide insights into evolutionary relationships.

Purpose of the Study:

• To refine butterfly taxonomy based on genome-scale phylogenetic analyses.
• To propose new taxonomic ranks and combinations, including genera, subgenera, tribes, and subtribes.
• To delimit species using criteria based on population diversification and gene exchange.

Main Methods:

• Phylogeny construction using all protein-coding genes from whole genome shotgun sequences.
• Projection of genome-scale phylogenies onto taxonomic classification and butterfly phenotypes.
• Application of criteria based on relative population diversification and gene exchange for species delimitation.

Main Results:

• Proposal of 7 new tribes, 4 new subtribes, 14 new genera, and 9 new subgenera.
• Resurrection of 6 genera, change in rank of 36 genera to subgenera, and synonymization of 3 subtribes and 42 genera/subgenera.
• Transfer of 34 species, elevation of 7 taxa to species rank, and designation of 1 taxon as a subspecies.

Conclusions:

• The study presents a significant revision of butterfly taxonomy, supported by comprehensive genomic data.
• The proposed taxonomic changes aim to better reflect evolutionary history and species diversity.
• Refined classification aids future research in butterfly biology, ecology, and conservation.