The poorly known majid genus Ortmann, 1893, is revised. The genus was previously known only from one species, Ortmann, 1893, described from Japan and reported from east Africa. is redescribed and figured in detail from the type and material from the type locality, Sagami Bay in Japan. This species is now restricted to Japan. Specimens from east Africa are herein described as two new species: n. sp. and n. sp.; they differ markedly from (now restricted to Japan) in the arrangement of spines on the carapace and pereopods, third maxillipeds, male pleon and gonopods.
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http://dx.doi.org/10.6620/ZS.2021.60-15 | DOI Listing |
Zootaxa
October 2024
Colección Nacional de Crustáceos; Instituto de Biología; Universidad Nacional Autónoma de México; 04510 Ciudad de México; Mexico.
The species of the genus Ehecatusa Ng & Low, 2010, E. chiapensis (Rodríguez & Smalley, 1972) and E. mixtepensis (Rodríguez & Smalley, in Smalley, 1970), were referred to as incertae sedis in the classification system of the tribe Pseudothelphusini Ortmann, 1897, proposed by Villalobos-Hiriart (2005) and Villalobos & Alvarez(2010) and as members of the subfamily Pseudothelphusinae in the recent phylogenetic proposal by Álvarez et al.
View Article and Find Full Text PDFZookeys
September 2024
Laboratory of Bioecology and Crustacean Systematics (LBSC), Department of Biology, Faculty of Philosophy, Science and Letters at Ribeirão Preto (FFCLRP), University of São Paulo (USP), Av. Bandeirantes 3900, 14040-901, Ribeirão Preto (SP), Brazil University of São Paulo Ribeirão Preto Brazil.
A recently published molecular phylogenetic analysis, focusing on selected Western Atlantic subspecies of Ortmann, 1893 and allies, was inconclusive about relationships among these members. This previous study found three groups that split into two distinct lineages: (Brazil 1) (= sensu stricto) and (Brazil 2) + (USA). Combined morphometry and molecular analyses applied to members of the group (Brazil 2) revealed a new unidentified species genetically related to the representatives.
View Article and Find Full Text PDFZoology (Jena)
May 2024
Museo de Zoología, Escuela de Biología, Universidad de Costa Rica, San José 11501-2060, Costa Rica; Unidad de Investigación Pesquera y Acuicultura (UNIP), Centro de Investigación en Ciencias del Mar y Limnología (CIMAR), Universidad de Costa Rica, San José 11501-2060, Costa Rica; Centro de Investigación en Biodiversidad y Ecología Tropical (CIBET), Universidad de Costa Rica, San José, Costa Rica. Electronic address:
The diversity of primary freshwater crabs of Central America is underestimated and poorly known, specially when considering both Atlantic and Pacific drainages distribution. Among the family Pseudothelphusidae Ortmann, 1893, the genus Ptychophallus Smalley, 1964 was recently revised using morphological data and encompassing 14 valid species, which are distributed exclusively in Costa Rica and Panama. Despite the informative scenario constructed with this previous study, some uncertainties remained such as those related to the populations distributed along different drainages and the lack of complete information regarding the phylogenetic relationships among the species that belong to this genus.
View Article and Find Full Text PDFZool Stud
April 2022
Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, NSW 2010, Australia, and School of Biological, Earth and Environmental Sciences, University of New South Wales, Kensington, NSW 2052, Australia. E-mail: (Ahyong).
The brachyuran crab Miers, 1884, described on the basis of two juveniles from the Arafura Sea, is a poorly known species of uncertain systematic position. It was made the type and only species of Rathbun, 1914, and assigned to the Prionoplacinae (Goneplacidae). Subsequent revisions of the goneplacids showed Prionoplacinae to be a junior synonym of Eucratopsinae Stimpson, 1871, as a member of the Panopeidae Ortmann, 1893, but no one has re-evaluated the position of .
View Article and Find Full Text PDFZool Stud
April 2021
c/o Muséum National d'Histoire Naturelle, Institut de Systématique, Évolution, Biodiversité, ISYEB -UMR 7205 -CNRS, MNHN, UPMC, EPHE, Département Systématique et Evolution, 57 rue Cuvier, CP26, F-75005, Paris, France. E-mail: (de Forges).
The poorly known majid genus Ortmann, 1893, is revised. The genus was previously known only from one species, Ortmann, 1893, described from Japan and reported from east Africa. is redescribed and figured in detail from the type and material from the type locality, Sagami Bay in Japan.
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