Revista de Biología Tropical ISSN Impreso: 0034-7744 ISSN electrónico: 2215-2075

OAI: https://revistas.ucr.ac.cr/index.php/rbt/oai
Revalidation of Ptychophallus campylus Pretzmann, 1968, a freshwater crab species from Costa Rica (Brachyura: Decapoda: Pseudothelphusidae)
PDF
HTML
EPUB

Keywords

Central America, Neotropical region, Ptychophallinae, synonymy, taxonomy.
América Central, región neotropical, Ptychophallinae, sinonimia, taxonomía.

How to Cite

Magalhães, C., Wehrtmann, I. S., & Mantelatto, F. L. (2025). Revalidation of Ptychophallus campylus Pretzmann, 1968, a freshwater crab species from Costa Rica (Brachyura: Decapoda: Pseudothelphusidae). Revista De Biología Tropical, 73(S2), e64534. https://doi.org/10.15517/rev.biol.trop.v73iS2.64534

Abstract

Introduction: Freshwater crab diversity in the Neotropics is high, comprising three families: Epiloboceridae, Pseudothelphusidae and Trichodactylidae. The genus Ptychophallus consists of 13 species, all from Panama and Costa Rica. Ptychophallus campylus has not been recognized as a valid species and has been treated as a presumptive junior synomym of Ptychophallus tristani.

Objective: The present study aims to formalize the resurrection of P. campylus as a valid species.

Methods: An additional specimen of P. campylus collected in the province of Limón, Costa Rica, was analyzed and compared to both the holotype of P. campylus and the description of P. tristani.

Results: The gonopod 1 of P. campylus is morphologically similar to that of P. tristani but can be differentiated by the shape of the lateral process of the male first gonopod. Moreover, both species show different geographic distributions: whereas P. tristani occurs in hydrographic basins of the Pacific versant of Costa Rica, P. campylus seems to be restricted to the Caribbean slope in eastern Costa Rica.

Conclusions: Ptychophallus campylus is formally revalidated from the synonymy of P. tristani, confirming recently published results of multigene analysis that recovered both species in different lineages. This revalidation of P. campylus increases the number of valid species of the genus Ptychophallus to a total of 14, with nine species or 64.2% of all Ptychophallus species occurring in Costa Rica.

https://doi.org/10.15517/rev.biol.trop..v73iS2.64534
PDF
HTML
EPUB

References

Álvarez, F., Ojeda, J. C., Souza-Carvalho, E., Villalobos, J. L., Magalhães, C., Wehrtmann, I. S., & Mantelatto, F. L. (2020). Revision of the higher taxonomy of Neotropical freshwater crabs of the family Pseudothelphusidae, based on multigene and morphological analyses. Zoological Journal of the Linnean Society, 193(3), 973–1001. https://doi.org/10.1093/zoolinnean/zlaa162

Cumberlidge, N., Álvarez, F., & Villalobos, J. L. (2014). Results of the global conservation assessment of the freshwater crabs (Brachyura, Pseudothelphusidae and Trichodactylidae): the Neotropical region, with an update on diversity. ZooKeys, 457, 133–157.

Cumberlidge, N., & Ng. P. K. L. (2009). Systematics, evolution, and biogeography of freshwater crabs. In J. W. Martin, K. A. Crandall, & D. L. Felder (Eds), Decapod crustacean phylogenetics. Crustacean issues 18 (pp. 491–508). Baton Rouge: CRC Press.

Magalhães, C., Wehrtmann, I. S., Lara, L. R., & Mantelatto, F. L. (2015). Taxonomy of the freshwater crabs of Costa Rica, with a revision of the genus Ptychophallus Smalley, 1964 (Crustacea: Decapoda: Pseudothelphusidae). Zootaxa, 3905(3), 301–344. https://doi.org/10.11646/zootaxa.3905.3.1

Magalhães, C., Campos, M. R., Collins, P. A., & Mantelatto, F. L. (2016). Diversity, distribution and conservation of freshwater crabs and shrimps in South America. In T. Kawai, & N. Cumberlidge (Eds.), A global overview of the conservation of freshwater decapod crustaceans, Chapter 11 (pp. 303–322). Springer International Publishing AG.

Mantelatto, F. L., Magalhães, C., Souza-Carvalho, E. A., Pantaleão, J. A. F., & Wehrtmann, I. S. (2024). Multi-gene phylogeny of the primary freshwater crab genus Ptychophallus Smalley, 1964 (Pseudothelphusidae: Ptychophallinae) from the Neotropical region. Zoology, 164, 126–169, https://doi.org/10.1016/j.zool.2024.126169

Ortmann, A. E. (1893). Die Decapoden-Krebse des Strassburger Museums, mit besonderer Berücksichtigung der von Herrn Dr. Döderlein bei Japan und bei den Liu-Kiu-Inseln gesammelten und zur Zeit im Strassburger Museum aufbewahrten Formen. VII. Theil. Abtheilung: Brachyura (Brachyura genuina Boas) II. Unterabtheilung: Cancroidea, 2. Section: Cancrinea, 1. Gruppe: Cyclometopa. Zoologische Jahrbücher. Abteilung für Systematik, Geographie und Biologie der Thiere, 7(3), 411–495.

Pretzmann, G. (1968). Neue südamerikanische Süsswasserkrabben (vorläufige Mitteilung). Entomologisches Nachrichtenblatt, 15 (SH 1), 1–15.

Pretzmann, G. (1971). Fortschritte in der Klassifizierung der Pseudothelphusidae. Anzeiger der Mathematisch Naturwissenschaftliche Klasse der Österreichischen Akademie der Wissenschaften, Series 1, 179(1–4), 12–24.

Pretzmann, G. (1972). Die Pseudothelphusidae (Crustacea Brachyura). Zoologica, 42(120), 1–182.

Rathbun, M. J. (1896). Descriptions of two new species of fresh-water crabs from Costa Rica. Proceedings of the United States National Museum, 18(1071), 377–379.

Rodriguez, G. (1982). Les crabes d’eau douce d’Amerique. Famille des Pseudothelphusidae. (Faune Tropicale 22, pp. 1–224). Editions de l’ORSTOM.

Smalley, A. E. (1964a). A terminology for the gonopods of the American river crabs. Systematic Zoology, 13(1), 28–31.

Smalley, A. E. (1964b). The river crabs of Costa Rica, and the subfamilies of the Pseudothelphusidae. Tulane Studies in Zoology, 12(1), 5–13.

Vogt, G. (2016). Direct development and post hatching brood care as key features of the evolution of freshwater Decapoda and challenges for conservation. In T. Kawai, & N. Cumberlidge (Eds.), A global overview of the conservation of freshwater decapod crustaceans (pp. 169–198). Springer International Publishing AG.

Yeo, D. C. J., Ng, P. K. L., Cumberlidge, N., Magalhães, C., Daniels, S. R., & Campos, M. R. (2008). Global diversity of crabs (Crustacea: Decapoda: Brachyura) in freshwater. Hydrobiologia, 595(1), 275–286. https://doi.org/10.1007/s10750-007-9023-3

##plugins.facebook.comentarios##

Creative Commons License

This work is licensed under a Creative Commons Attribution 4.0 International License.

Downloads

Download data is not yet available.