Pleistocene Climate Changes and Lineage Diversification of <i>Sphenarium</i> Grasshoppers (Orthoptera: Pyrgomorphidae).

ABSTRACT: Pleistocene climatic fluctuations have significantly influenced biotic diversification globally, but their impacts on Neotropical insects remain understudied. Here, we evaluated the predictions of the Glacial and Interglacial Refugia models to investigate the effects of Pleistocene climate changes on four Sphenarium species: S. purpurascens, S. rugosum, S. variabile, and S. zapotecum. We analyzed phylogeographic patterns using a mitochondrial marker and conducted ecological niche and paleodistribution modeling to evaluate niche conservatism and historical distribution dynamics. We found high haplotype diversity (Hd > 0.87) and significant phylogeographic structure (N _ST-G _ST = 0.17-0.37) in all species except S. zapo

SUBMITTER: Sanabria-Urban S 

PROVIDER: S-EPMC12511763 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature