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Issue: Vol. 5659 No. 1: 2 Jul. 2025
Type: Article
Published: 2025-07-02
DOI: 10.11646/zootaxa.5659.1.1
Page range: 1-28
Abstract views: 96
PDF downloaded: 7

Integrative taxonomic analysis of the Pseudothelphusa americana de Saussure, 1857 species complex with the description of three new species (Decapoda, Pseudothelphusidae, Pseudothelphusinae)

Colección Nacional de Crustáceos; Instituto de Biología; Universidad Nacional Autónoma de México; 04510 Ciudad de México; México.
Colección Nacional de Crustáceos; Instituto de Biología; Universidad Nacional Autónoma de México; 04510 Ciudad de México; México.
Colección Nacional de Crustáceos; Instituto de Biología; Universidad Nacional Autónoma de México; 04510 Ciudad de México; México.
Crustacea freshwater crabs Mexico new species molecular analysis nomenclatural updating

Abstract

The Neotropical freshwater crab, Pseudothelphusa americana de Saussure, 1857, has historically been an unstable taxon. New collections from the published range of P. americana indicate a great deal of morphological variation within this taxon, suggesting that it may be a species complex. In the present study we describe three new species within the P. americana complex based on a phylogenetic analysis, on a study of the morpho-geometric variation of the gonopod, and on a thorough morphological revision of somatic and sexual structures. Three new species (P. chilapaensis sp. nov., P. hermosorum sp. nov., and P. queretana sp. nov.) are described, and P. americana sensu stricto is redescribed, a neotype designated and its revised geographic distribution mapped.

 

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How to Cite

Madrigal, K.J., Villalobos-Hiriart, J.L. & Álvarez, F. (2025) Integrative taxonomic analysis of the Pseudothelphusa americana de Saussure, 1857 species complex with the description of three new species (Decapoda, Pseudothelphusidae, Pseudothelphusinae). Zootaxa, 5659 (1), 1–28. https://doi.org/10.11646/zootaxa.5659.1.1