Broad-Scale Climatic Gradients Drive Multiple Facets of Scorpion Beta Diversity in Northeastern Brazil

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  Broad-Scale Climatic Gradients Drive Multiple Facets of Scorpion Beta Diversity in Northeastern Brazil ABSTRACT Aim Beta diversity analyses clarify mechanisms structuring ecological communities, but their multidimensional facets remain poorly explored in arthropods. Here, we quantified taxonomic, phylogenetic, and functional beta diversity in scorpions, partitioned these facets into species replacement and richness differences, and evaluated the relative importance of spatial structure and environmental conditions in driving community assembly. Location Northeastern Brazil, South America. Taxon Scorpions (Arachnida: Scorpiones). Methods Taxonomic beta diversity was estimated using species presence across 70 sites in northeastern Brazil. Phylogenetic turnover was calculated from a multi-locus molecular tree, and functional beta diversity was derived from morphometric and ecological traits. All beta diversity facets were decomposed into replacement and richness-difference component...

Report of giant vinegaroon (Thelyphonida: Thelyphonidae) predation by scorpion (Scorpiones: Buthidae) in Mexican tropical dry forest

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Report of giant vinegaroon (Thelyphonida: Thelyphonidae) predation by scorpion (Scorpiones: Buthidae) in Mexican tropical dry forest

Abstract
This study reports the first documented case of predation of an early instar thelyphonid, Mastigoproctus sp., by the scorpion Centruroides elegans in a dry tropical forest in Mexico. The overlap in microhabitats between these two species suggests that their encounters are facilitated by the errant behavior of C. elegans. Our findings contribute to the understanding of the ecological dynamics involving thelyphonids and highlight the vulnerability of juvenile stages to predation, expanding the known predators of these arachnids. 
André F. A. Lira, Oscar G. del-Pozo, Gerardo A. Contreras-Félix, Report of giant vinegaroon (Thelyphonida: Thelyphonidae) predation by scorpion (Scorpiones: Buthidae) in Mexican tropical dry forest, Acta Arachnologica, 2025, Volume 74, Issue 2, Pages 123-124, Released on J-STAGE December 11, 2025, Online ISSN 1880-7852, Print ISSN 0001-5202, https://doi.org/10.2476/asjaa.74.123, https://www.jstage.jst.go.jp/article/asjaa/74/2/74_123/_article/-char/en