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Issue: Vol. 5792 No. 1: 10 Apr. 2026
Type: Article
Published: 2026-04-10
DOI: 10.11646/zootaxa.5792.1.7
Page range: 137-156
Abstract views: 49
PDF downloaded: 5

A new genus and species of Pseudothelphusidae (Decapoda: Brachyura) from Serra do Imeri, Guiana Shield highlands, Amazonas State, Brazil

Museu de Zoologia; Universidade de São Paulo; São Paulo; Brazil
Laboratorio de Bioecologia e Sistemática de Crustáceos; Departamento de Biologia; Faculdade de Filosofia; Ciências e Letras de Ribeirão Preto; Universidade de São Paulo; São Paulo; Brazil; Instituto Nacional de Pesquisas da Amazônia; Manaus; Brazil (Retired).
Crustacea amazon highlands Neotropical region Freshwater crab Kingsleyinae Taxonomy altitudinal distribution

Abstract

A new genus and species of Kingsleyinae (Pseudothelphusidae) crab is described and illustrated from a tannin-rich stream in humid montane forest at 1,730 m elevation in Serra do Imeri, Guiana Shield highlands, northern Amazonia, is described and illustrated. Its phylogenetic position is inferred from mitochondrial COI sequences using Maximum Likelihood analysis, which supports the new taxon as the sister group of the kingsleyine genera Microthelphusa and Orthothelphusa. The new genus is compared with all other genera of Kingsleyinae. The paraphyly of Microthelphusa is briefly discussed, and M. marahuacaensis and M. guaiquinimaensis, both from the Venezuelan Amazon highlands, are transferred to the new genus. In addition, the highest elevation records for the 30 pseudothelphusid species known from Brazil are also summarized and briefly discussed.

 

References

  1. Álvarez, F., Ojeda, J.C., Souza-Carvalho, E.A., Villalobos, J.L., Magalhães, C., Wehrtamnn, I.S. & Mantelatto, F.L. (2020) Revision of the higher taxonomy of Neotropical freshwater crabs of the family Pseudothelphusidae Ortmann, 1893, based on multi-gene and morphological analyses. Zoological Journal of Linnean Society, 193 (3), 973–1001. [for 2021] https://doi.org/10.1093/zoolinnean/zlaa162
  2. Azevedo-Santos, V.M. & Lima-Stripari, N. (2010) Primeiro registro de Dilocarcinus pagei Stimpson, 1861 (Decapoda, Trichodactylidae) no estado de Minas Gerais. Biotemas, 23 (2), 199–202. Available from: https://periodicos.ufsc.br/index.php/biotemas/article/view/2175-7925.2010v23n2p199/17342 (accessed 22 August 2025) https://doi.org/10.5007/2175-7925.2010v23n2p199
  3. Boos Jr., H., Bond-Buckup, G., Buckup, L., Araújo, P.B., Magalhães, C., Almerão, M., Santos, R.A. & Mantelatto, F.L. (2012) Checklist of the Crustacea from the State of Santa Catarina, Brazil. Check List, 8 (6), 1020–1046. https://doi.org/10.15560/8.6.1020
  4. Bott, R. (1967) Flusskrabben aus Brasilien und benachbarter Gebiete. Potamocarcinus (Kingsleya) Ortmann 1897 (Crustacea, Decapoda). Senckenbergiana biologica, 48 (4), 301–312. Available from: https://decapoda.nhm.org/pdfs/31941/31941.pdf (accessed 22 August 2025)
  5. Bott, R. (1969) Die Süsswasserkrabben Süd-Amerikas und ihre Stammesgeschichte: eine Revision der Trichodactylidae und der Pseudothelphusidae östlich der Anden (Crustacea, Decapoda). Abhandlungen der Senckenbergischen Naturforschenden Gesellschaft, 518, 1–94. Available from: https://decapoda.nhm.org/pdfs/27401/27401.pdf (accessed 22 August 2025)
  6. Bott, R. (1970a) Betrachtungen über die Entwicklungsgeschichte und Verbreitung der Süßwasserkrabben nach der Sammlung des Naturhistorischen Museums in Genf/Schweiz. Revue Suisse de Zoologie, 77, 327–344, pls. 1–2. Available from: https://decapoda.nhm.org/pdfs/11973/11973.pdf (accessed 22 August 2025) https://doi.org/10.5962/bhl.part.75900
  7. Bott, R. (1970b) Bemerkungen zu einigen Süsswasserkrabben (Crustacea: Decapoda). Senckenbergiana biologica, 51 (5/6), 355–361. Available from: https://decapoda.nhm.org/pdfs/26953/26953.pdf (accessed 22 August 2025)
  8. Brito-Fonseca, V.L.G., Alencar, C.E.R.D., Moraes, S.A.S.N., Vale, V.F. & Freire, F.A.M. (2018) New altitudinal distribution record and updated geographic distribution of the freshwater crab Trichodactylus fluviatilis Latreille, 1828 (Crustacea, Trichodactylidae). Check List, 14 (5), 977–984. https://doi.org/10.15560/14.6.977
  9. Campos, M.R. & Magalhães, C. (2005) Achagua Campos, 2001, a new synonym of Eudaniela Pretzmann, 1971, and the description of Rodriguezus gen. nov. (Decapoda: Brachyura: Pseudothelphusidae). Nauplius, 12 (2), 95–97. Available from: https://crustacea.org.br/wp-content/uploads/2014/02/nauplius-v12n2a05.CamposMagalhaes.pdf (accessed 22 August 2025)
  10. Coifmann, I. (1939) Potamonidi della Guiana Inglesi raccolti dal Prof. Nello Beccari. Archivio Zoologico Italiano, 27, 93–116, figs. 1–4, pl. 3. Available from: http://digitale.bnc.roma.sbn.it/tecadigitale/giornale/TO00209791/1939/V.27/00000103 (accessed 22 August 2025)
  11. Cumberlidge, N. (2007) A new species of freshwater crab of the genus Microthelphusa (Brachyura: Pseudothelphusidae) from a remote isolated cloud forest on a tabletop mountain in western Guyana, South America. Zootaxa, 1447 (1), 57–62. https://doi.org/10.11646/zootaxa.1447.1.4
  12. Folmer O., Black M., Hoeh W., Lutz R., Vrijenhoek, R. (1994) DNA primers for amplification of mitochondrial cytochrome c oxidase subunit I from diverse metazoan invertebrates. Molecular Marine Biology and Biotechnology, 3, 294–299.
  13. Fouquet, A., Moraes, L.J., Grant, T., Recoder, R., Camacho, A., Ghellere, J.M., Barutel, A. & Rodrigues, M.T. (2024) A new species of Neblinaphryne (Anura: Brachycephaloidea: Neblinaphrynidae) from Serra do Imeri, Amazonas state, Brazil. Zootaxa, 5514 (1), 73–90. https://doi.org/10.11646/zootaxa.5514.1.5
  14. França, N.F.C., Magalhães, C. & Mantelatto, F.L. (2024) Integrative approach revealing a species complex in the Neotropical freshwater crab Dilocarcinus septemdentatus (Herbst, 1783) (Decapoda, Trichodactylidae) with a description of a new species. Arthropod Systematics & Phylogeny, 82, 385–405. https://doi.org/10.3897/asp.82.e115268
  15. Göldi, E.A. (1886) Studien über neue und weniger bekannte Podophthalmen Brasiliens. Archiv für Naturgeschichte, 52 (1), 19–46. Available from: https://decapoda.nhm.org/pdfs/31277/31277.pdf (accessed 22 August 2025)
  16. Herbst, J.F.W. (1783) Versuch einer Naturgeschichte der Krabben und Krebse nebst einer systematischen Beschreibung ihrer verschiedenen Arten. 1 (4–5). Gottlieb August Lange, Berlin und Stralsund, 274 pp. Available from: https://www.biodiversitylibrary.org/item/131110#page/167/ mode/1up (accessed 22 August 2025)
  17. Katoh, K., Kuma, K.I., Toh, H. & Miyata, T. (2005) MAFFT version 5: improvement in accuracy of multiple sequence alignment. Nucleic Acids Research, 33, 511–518. https://doi.org/10.1093/nar/gki198
  18. Kearse, M., Moir, R., Wilson, A., Stones-Havas, S., Cheung, M., Sturrock, S., Buxton, S., Cooper, A., Markowitz, A., Duran, C., Thierer, T., Ashton, B., Meintjes, P. & Drummond, A. (2012) Geneious Basic: An Integrated and Extendable Desktop Software Platform for the Organization and Analysis of Sequence Data. Bioinformatics, 28, 1647–1649. https://doi.org/10.1093/bioinformatics/bts199
  19. Latreille, P.A. (1825–1828a) Trichodactyle, Trichodactylus. In: Encyclopédie Méthodique. Histoire naturelle. Entomologie, ou Histoire Naturelle des Crustacés, des Arachnides et des Insectes. Vol. 10. Agasse, Paris, pp. 705. Available from: https://www.biodiversitylibrary.org/item/78665#page/713/mode/1up (accessed 22 August 2025)
  20. Latreille, P.A. (1825–1828b) Trichodactyle, Trichodactylus. In: Encyclopédie Méthodique. Histoire naturelle. Entomologie, ou Histoire Naturelle des Crustacés, des Arachnides et des Insectes. Vol. 10. Agasse, Paris, pp. 564. Available from: https://www.biodiversitylibrary.org/item/32580#page/574/mode/1up (accessed 22 August 2025)
  21. Magalhães, C. (1986) Revisão taxonômica dos caranguejos de água doce brasileiros da família Pseudothelphusidae (Crustacea, Decapoda). Amazoniana, 9 (4), 609–636. Available from: https://repositorio.inpa.gov.br/bitstream/1/39836/1/amazoniana.pdf (accessed 22 August 2025)
  22. Magalhães, C. (1990) A new species of the genus Kingsleya from Amazonia, with a modified key for the Brazilian Pseudothelphusidae (Crustacea: Decapoda: Brachyura). Zoologische Mededelingen, Leiden, 63 (21), 275–281. Available from: https://repository.naturalis.nl/pub/318653/ZM1990063021.pdf (accessed 22 August 2025)
  23. Magalhães, C. (2003) The occurrence of freshwater crabs (Crustacea: Decapoda: Pseudothelphusidae, Trichodactylidae) in the Rio Xingu, Amazon Region, Brazil, with description of a new species of Pseudothelphusidae. Amazoniana, 17 (3/4), 377–386.
  24. Magalhães, C. (2005) A new species of freshwater crab (Crustacea: Decapoda: Pseudothelphusidae) from the southeastern Amazon Basin. Nauplius, 12 (2), 99–107. [for 2004]. Available from: https://crustacea.org.br/wp-content/uploads/2014/02/nauplius-v12n2a06.Magalhaes.pdf (accessed 22 August 2025)
  25. Magalhães, C. (2009) A new species of freshwater crab of the genus Fredius Pretzmann, 1967 from the middle Amazon River basin, Brazil (Crustacea: Decapoda: Pseudothelphusidae). Proceedings of the Biological Society of Washington, 122 (1), 81–86. https://doi.org/10.2988/08-35.1
  26. Magalhães, C. (2010) A new species of freshwater crab of the genus Microthelphusa (Decapoda, Pseudothelphusidae) from a tepui in the Serra do Aracá, state of Amazonas, Brazil. In: Franzen, C., de Grave, S. & Ng, P.K.L. (Eds.), Studies on Malacostraca: Lipke Bijdeley Holthuis Memorial Volume. Crustaceana Monographs. No. 14. Brill, Leiden, pp. 453–460. https://doi.org/10.1163/9789047427759_030
  27. Magalhães, C. (2017) A new genus and species of freshwater crab (Decapoda: Pseudothelphusidae) from the Tapajós River, a southern tributary of the Amazon River in Brazil. Crustaceana, 90 (7–10), 1015–1025. https://doi.org/10.1163/15685403-00003641
  28. Magalhães, C., Abrunhosa, F.A., Pereira, M.O. & Melo, M.A. (2005) New records of Fredius denticulatus (H. Milne-Edwards, 1853) and F. reflexifrons (Ortmann, 1897), and the eastern limits of the distribution of pseudothelphusid crabs (Crustacea: Decapoda) in Brazil. Acta Amazonica, 35 (1), 93–96. https://doi.org/10.1590/S0044-59672005000100014
  29. Magalhães, C., Pinheiro, A.P. & Mantelatto, F.L. (2024) Amazon deep South: Schubarthelphusa, a new genus to accommodate two freshwater crab species from the state of Rondônia, Brazil (Brachyura, Pseudothelphusidae). Crustaceana, 97 (5–9) 677-685. https://doi.org/10.1163/15685403-bja10371
  30. Magalhães, C., Sanches, V.Q.A., Pileggi, L.G. & Mantelatto, F.L. (2014) Morphological and molecular description of a new species of Fredius (Decapoda: Pseudothelphusidae) from Rondônia, southern Amazonia, Brazil. In: Yeo, D.C.J., Cumberlidge, N. & Klaus, S. (Eds.), Advances in Freshwater Decapod Systematics and Biology. Crustaceana Monographs. No. 19. Brill, Leiden, pp. 101–114. https://doi.org/10.1163/9789004207615_007
  31. Magalhães, C. & Türkay, M. (1986) Brasiliothelphusa, a new Brazilian freshwater-crab genus (Crustacea: Decapoda: Pseudothelphusidae). Senckenbergiana biologica, 66 (4/6), 371–376. Available from: https://research.nhm.org/pdfs/26989/26989.pdf (accessed 22 August 2025)
  32. Magalhães, C. & Türkay, M. (1996a) Taxonomy of the Neotropical freshwater crab family Trichodactylidae II: the genera Forsteria, Melocarcinus, Sylviocarcinus and Zilchiopsis (Crustacea: Decapoda: Brachyura). Senckenbergiana biologica, 75 (1/2), 97–130. Available from: https://decapoda.nhm.org/references/pdfpicker.html?id=11713&pdfroot=https://decapoda.nhm.org/pdfs (accessed 22 August 2025)
  33. Magalhães, C. & Türkay, M. (1996b) Taxonomy of the Neotropical freshwater crab family Trichodactylidae II: the genera Fredilocarcinus and Goyazana (Crustacea: Decapoda: Brachyura). Senckenbergiana biologica, 75 (1/2), 131–142. Available from: https://decapoda.nhm.org/references/pdfpicker.html?id=11714&pdfroot=https://decapoda.nhm.org/pdfs (accessed 22 August 2025)
  34. Magalhães, C. & Türkay, M. (2008) A new species of Kingsleya from the Yanomami Indians area in the Upper Rio Orinoco, Venezuela. (Crustacea: Decapoda: Brachyura: Pseudothelphusidae). Senckenbergiana biologica, 88 (2), 1–7. Available from: https://www.researchgate.net/publication/292639770 (accessed 22 August 2025)
  35. Magalhães, C. & Türkay, M. (2010) A new freshwater crab of the genus Brasiliothelphusa Magalhães & Türkay, 1986 from rio Aripuanã, southern Amazon region, Brazil. (Crustacea: Decapoda: Pseudothelphusidae). Nauplius, 18 (2), 103–108. Available from: http://crustacea.org.br/wp-content/uploads/2014/02/nauplius-v18n2a01.Magalhaesturkay.pdf (accessed 22 August 2025)
  36. Magalhães, C. & Wehrtmann, I.S. (2025) Diversity of freshwater crab: new distributional data for four species (Decapoda: Pseudothelphusidae) from Meso- and South American countries. Revista de Biología Tropical, 73 (S1), e63625.
  37. Martins, C.A.M., Nascimento, W.N., Santos, L.C., Magalhães, C. & Pinheiro, A.P. (2021) A new species of the genus Fredius Pretzmann, 1967 (Decapoda: Brachyura: Pseudothelphusidae) from Brazil, with comments on the southerly distribution of the family. Zootaxa, 4903 (2), 285–295. https://doi.org/10.11646/zootaxa.4903.2.8
  38. Milne Edwards, H. (1853) Memoire sur la famille des Ocypodiens. Annales des Sciences Naturelles, 3e Série, 20, 163–228, pls. 6–11. Available from: https://www.biodiversitylibrary.org/item/109924#page/571/mode/1up (accessed 22 August 2025)
  39. Oliveira, R.A. & Camargo, F.V. (2016) Aumento na distribuição altitudinal de Trichodactylus petropolitanus. Anais do Congresso de Iniciação Científica da FEPI (2010-2016), Itajubá, MG (Resumo publicado nos anais do III Congresso). Revista Científica do Centro Universitário de Itajubá, 3 (2), 1–2. Available from: http://revista.fepi.br/revista/index.php/revista/article/view/49/48 (accessed 22 August 2025)
  40. 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, pl. 17. Available from: https://www.biodiversitylibrary.org/item/121145#page/424/mode/1up (accessed 22 August 2025) https://doi.org/10.5962/bhl.part.24064
  41. Ortmann, A.E. (1897) Carcinologische Studien. Zoologische Jahrbücher, 10 (3), 258–372, pl. 17. Available from: https://www.biodiversitylibrary.org/item/38125#page/270/mode/1up (accessed 22 August 2025)
  42. Pedraza, M. (2017). Taxonomy of the freshwater crab genus Neopseudothelphusa Pretzmann, 1965 (Decapoda: Brachyura: Pseudothelphusidae), with the description of a new genus. Nauplius, 25, e2017009. https://doi.org/10.1590/2358-2936e2017009
  43. Pedraza, M.E. (2015) Morfologia, taxonomia e análise cladística da tribo Kingsleyini (Crustacea: Decapoda: Pseudothelphusidae). Doctoral Dissertation, Universidade de São Paulo, Museu de Zoologia, Programa de Pós-Graduação em Sistemática, Taxonomia Animal e Biodiversidade, São Paulo, 279 pp. Available from: https://www.teses.usp.br/teses/disponiveis/38/38131/tde-16032016-122758/publico/T.pdf (accessed 22 August 2025)
  44. Pedraza, M., Martinelli-Filho, J.E. & Magalhães, C. (2015) A new species of the genus Kingsleya from rio Xingu, and range extension for Kingsleya junki (Crustacea: Decapoda: Pseudothelphusidae), freshwater crabs from southern Amazon Basin, Brazil. Zoologia, 32 (1), 41–46. https://doi.org/10.1590/S1984-46702015000100006
  45. Pedraza, M., Magalhães, C. & Tavares, M. (2016) A new genus of freshwater crab of the tribe Kingsleyini Bott, 1970 (Crustacea: Decapoda: Brachyura: Pseudothelphusidae) with description of a new species from Mato Grosso, Brazil. Zootaxa, 4173 (1), 94–100. https://doi.org/10.11646/zootaxa.4173.1.9
  46. Pedraza, M. & Tavares, M. (2014) A new species of freshwater crab of the genus Microthelphusa Pretzmann, 1968 (Crustacea: Brachyura: Pseudothelphusidae) from the Amazon region of Guyana. Zootaxa, 3847 (2), 267–274. https://doi.org/10.11646/zootaxa.3847.2.6
  47. Pedraza, M. & Tavares, M. (2015) A new species of freshwater crab of the genus Kingsleya Ortmann, 1897 (Crustacea: Brachyura: Pseudothelphusidae) from Amazonia, Brazil. Zootaxa, 4032 (4), 444–450. https://doi.org/10.11646/zootaxa.4032.4.9
  48. Pinheiro, A.P. & Santana, W. (2016) A new and endangered species of Kingsleya Ortmann, 1897 (Crustacea: Decapoda: Brachyura: Pseudothelphusidae) from Ceará, northeastern Brazil. Zootaxa, 4171 (2), 365–372. https://doi.org/10.11646/zootaxa.4171.2.9
  49. Pralon, B., Pinheiro, A.P. & Santana, W. (2020) New species of freshwater crab genus Kingsleya Ortmann, 1897 (Decapoda: Brachyura: Pseudothelphusidae) from Piauí, northeastern Brazil. Nauplius, 28, e2020021. http://doi.org/10.1590/2358-2936e2020021
  50. Pretzmann, G. (1967) Über einige südamerikanische Süsswasserkrabben (Pseudothelphusidae). (Vorläufige Mitteilung). Entomologisches Nachrichtenblatt, Wien, 14, 23–26. Available from: https://decapoda.nhm.org/pdfs/28113/28113.pdf (accessed 22 August 2025)
  51. Pretzmann, G. (1968a) Neue südamerikanische Süßwasserkrabben. (Vorläufige Mitteilung). Entomologisches Nachrichtenblatt, Wien, 15 (Sonderhaft 1), 1–15. Available from: https://www.zobodat.at/pdf/EN_15_SH_1_1968_0001-0015.pdf (accessed 22 August 2025)
  52. Pretzmann, G. (1968b) Weitere neue südamerikanische Süßwasserkrabben. (Vorläufige Mitteilung). Entomologisches Nachrichtenblatt, Wien, 15 (Sonderhaft 2), 1–6. Available from: https://www.zobodat.at/pdf/EN_15_SH_2_1968_0001-0006.pdf (Accessed 22 August 2025)
  53. Pretzmann, G. (1971a) Eine interessante Süsswasserkrabbe aus Britisch Guayana. Sitzungsberichte der Mathematisch-naturwissenschaftlichen Klasse der Österreichischen Akademie der Wissenschaften, Wien, 3, 46–48. Available from: https://decapoda.nhm.org/pdfs/27496/27496.pdf (accessed 22 August 2025)
  54. Pretzmann, G. (1971b) Fortschritte in der Klassifizierung der Pseudothelphusidae. Sitzungsberichte der Mathematisch-naturwissenschaftlichen Klasse der Österreichischen Akademie der Wissenschaften, Wien, 179, 15–24. Available from: https://decapoda.nhm.org/pdfs/27495/27495.pdf (accessed 22 August 2025)
  55. Randall, J.W. (1840) Catalogue of the Crustacea brought by Thomas Nuttall and J. K. Townsend, from the west coast of North America and the Sandwich Islands, with descriptions of such species as are apparently new, among which are included several species of different localities, previously existing in the collection of the Academy. Journal of the Academy of Natural Sciences of Philadelphia, 8 (1), 106–147, pls. 3–7. Available from: https://decapoda.nhm.org/pdfs/26415/26415.pdf (accessed 22 August 2025)
  56. Rathbun, M.J. (1893) Description of new species of American fresh-water crabs. Proceedings of the United States National Museum, 16 (959), 649–661, pls. 73–77. [https://www.biodiversitylibrary.org/item/53716#page/809/mode/1up] https://doi.org/10.5479/si.00963801.16-959.649
  57. Rathbun, M.J. (1898) A contribution to a knowledge of the fresh-water crabs of America.—The Pseudothelphusinæ. Proceedings of the United States National Museum, 21 (1158), 507–537. Available from: http://hdl.handle.net/10088/13499 (accessed 22 August 2025) https://doi.org/10.5479/si.00963801.21-1158.507
  58. Rathbun, M.J. (1905) Les crabes d’eau douce. Nouvelles Archives du Muséum d’Histoire Naturelle, Paris, 4e série, 7, 159–322. Available from: https://www.biodiversitylibrary.org/item/112422#page/179/mode/1up (accessed 22 August 2025)
  59. Rathbun, M.J. (1919) Three new South American river-crabs. Proceedings of the Biological Society of Washington, 32, 5–6. Available from: https://www.biodiversitylibrary.org/item/22875#page/24/mode/1up (accessed 22 August 2025)
  60. Rodríguez, G. (1966) The freshwater crabs of the genus Pseudothelphusa from Northern Venezuela and Trinidad (Brachyura, Potamonidae). Zoologische Mededelingen, 41 (6), 111–135. Available from: https://repository.naturalis.nl/pub/317951 (accessed 22 August 2025)
  61. Rodríguez, G. (1967) New species of Pseudothelphusa from the Venezuelan Andes (Crustacea Brachyura, Potamonidae). Zoologische Mededelingen, 42 (2), 5–10, 2 pls. Available from: https://repository.naturalis.nl/pub/318888 (accessed 22 August 2025)
  62. Rodríguez, G. (1980) Description préliminaire de quelques espèces et genres nouveaux de crabes d’eau douce de l’Amerique tropicale (Crustacea, Decapoda, Pseudothelphusidae). Bulletin du Muséum national d’Histoire naturelle, Section A, Zoologie, Biologie et Ecologie Animales, Paris, 4e Série, 2 (3), 889–894. Available from: https://decapoda.nhm.org/pdfs/27334/27334.pdf (accessed 22 August 2025)
  63. Rodríguez, G. (1981) Decapoda. In: Hurlbert, S.H., Rodríguez, G. & Santos, N.D. (Eds.), Aquatic Biota of Tropical South America. Part 1. Arthropoda. San Diego State University, San Diego, California, pp. 41–51. Available from: https://decapoda.nhm.org/pdfs/31124/31124.pdf (accessed 22 August 2025)
  64. Rodriguez, G. (1982) Les crabes d’eau douce d’Amérique. Familie des Pseudothelphusidae. Faune Tropicale. No. 22. Editions de l’ORSTOM, Paris, 223 pp. Available from: https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_6/Fau_trop/01636.pdf (accessed 22 August 2025)
  65. Rodríguez G. (1992) The Freshwater Crabs of America. Family Trichodactylidae and Supplement to the Family Pseudothelphusidae. Collection Faune Tropicale. No. 31. Editions de l’ORSTOM, Paris, 189 pp. Available from: https://horizon.documentation.ird.fr/exl-doc/pleins_textes/divers20-07/36706.pdf (accessed 22 August 2025)
  66. Rodríguez, G. & Campos, M.R. (2000) Microthelphusa sucreensis, a new species of Pseuodothelphusidae (Decapoda), with notes on abnormalities in the sexual appendages of fresh-water crabs. Journal of Crustacean Biology, 20 (5), 332–336. https://doi.org/10.1163/1937240X-90000035
  67. Rodríguez, G. & Esteves, A.E. (1972) Una nueva especie de cangrejo de agua dulce (Decapoda: Pseudothelphusidae) del centro de Venezuela. Memoria de la Sociedad de Ciencias Naturales La Salle, 32 (92), 133–139. Available from: https://decapoda.nhm.org/pdfs/31228/31228.pdf (accessed 22 August 2025)
  68. Rodriguez, G. & Pereira, G. (1992) New species, cladistic relationships, and biogeography of the genus Fredius (Decapoda: Brachyura: Pseudothelphusidae) from South America. Journal of Crustacean Biology, 12 (2), 298–311. https://doi.org/10.2307/1549082
  69. Rodríguez, G. & Suárez, H. (1994) Fredius stenolobus, a new species of freshwater crab (Decapoda: Brachyura: Pseudothelphusidae) from the Venezuelan Guiana. Proceedings of the Biological Society of Washington, 107 (1), 132–136. Available from: https://www.biodiversitylibrary.org/item/110034#page/154/mode/1up (accessed 22 August 2025)
  70. Rull, V., Hubber, O., Vegas-Vilarrúbia & Señaris, C. (2019) Definition and characterization of the Pantepui biogeographical province. In: Rull, V., Vegas-Vilarrúbia, T., Huber, O. & Señaris, C. (Eds.), Biodiversity of Pantepui: The Pristine “Lost World” of the Neotropical Guiana Highlands. Elsevier, London, pp. 69–91. https://doi.org/10.1016/B978-0-12-815591-2.00001-X
  71. Santos, L.C., Tavares, M., Silva, J.R.F., Cervini, M., Pinheiro, A.P. & Santana, W. (2020) A new species of freshwater crab (Crustacea: Brachyura: Pseudothelphusidae) from a naturally isolated orographic forest enclave within the semiarid Caatinga in Ceará, northeastern Brazil. PeerJ, 8, e9370. https://doi.org/10.7717/peerj.9370
  72. Stimpson, W.M. (1861) Notes on certain decapod Crustacea. Proceedings of the Academy of Natural Sciences of Philadelphia, 13, 372–373. Available from: https://www.biodiversitylibrary.org/item/17713#page/384/mode/1up (accessed 22 August 2025)
  73. Suárez, H. (2006) New species of freshwater crab from Venezuela and redescription of Microthelphusa rodriguezi Pretzmann, 1968 (Brachyura: Pseudothelphusoidea: Pseudothelphusidae). Journal of Crustacean Biology, 26 (2), 242–247. https://doi.org/10.1651/S-2641.1
  74. Suárez, H. (2015) Six new species of freshwater crabs from Pantepui, Venezuela (Crustacea: Decapoda: Pseudothelphusidae). Anartia, 25, 64–94. [for 2013]Available from: https://produccioncientificaluz.org/index.php/anartia/article/view/40415/45927 (accessed 22 August 2025)
  75. Tamura K., Stecher G. & Kumar S. (2021) MEGA11: molecular evolutionary genetics analysis version 11. Molecular Biology and Evolution, 38, 3022–3027. https://doi.org/10.1093/molbev/msab120
  76. Vieira, I.M. (2008) Inventários rápidos da fauna de crustáceos do Parque Nacional Montanhas do Tumucumaque: Expedições I a V. In: Bernard, E. (Ed.), Inventários Biológicos Rápidos no Parque Nacional Montanhas do Tumucumaque, Amapá, Brasil. RAP Bulletin of Biological Assessment. No. 48. Conservation International, Arlington, Virginia, pp. 66–71. [Available from: https://www.conservation.org/docs/default-source/brasil/rap_tumucumaque.pdf?sfvrsn=3ee23175_2 (accessed 22 August 2025)
  77. White, A. (1847b) Short descriptions of some new species of Crustacea of the British Museum. Proceedings of the Zoological Society of London, 1847 (Pt 15), 84–86. Available from: https://www.biodiversitylibrary.org/item/46217#page/585/mode/1up (accessed 22 August 2025)
  78. Wong, T., Ly-Trong, N., Ren, H., Baños, H., Roger, A., Susko, E., Bielow, C., De Maio, N., Goldman, N., Hahn, M., Huttley, G., Lanfear, R. & Minh, B.Q. (2025) IQ-TREE 3: Phylogenomic Inference Software using Complex Evolutionary Models. EcoEvoRxiv. [preprint server] https://doi.org/10.32942/X2P62N
  79. Zanetti, F., Castro, P.M. & Magalhães, C. (2018) Freshwater crabs (Decapoda: Brachyura: Pseudothelphusidae, Trichodactylidae) from the state of Roraima, Brazil: species composition, distribution and new records. Nauplius, 26, e2018011. https://doi.org/10.1590/2358-2936e2018011

How to Cite

Tavares, M. & Magalhães, C. (2026) A new genus and species of Pseudothelphusidae (Decapoda: Brachyura) from Serra do Imeri, Guiana Shield highlands, Amazonas State, Brazil. Zootaxa, 5792 (1), 137–156. https://doi.org/10.11646/zootaxa.5792.1.7