Maritimonautes Cumberlidge & Daniels 2022, GEN. NOV.
Creators
Description
MARITIMONAUTES GEN. NOV.
(FIGS 1B1, 5A–C, 8B; TABLES 1–3)
Zoobank registration: urn:lsid:zoobank.org:act: 29BB5EDB-5AB4-48E5-8B42-AA97939DDA7F
Thelphusa A. Milne-Edwards, 1868: 86, pl. 20, figs 1–4; 1869: 178; 1887: 146; Pfeffer, 1889: 33.
Telphusa Hilgendorf, 1879: 801; 1891: 20; 1898: 16.
Potamon (Potamonautes) Ortmann, 1897: 303, 305.
Potamon De Man, 1898: 434, 437; Chace, 1942: 190.
Potamon (Potamonautes) De Man, 1898: 262–270, 436, fig. 3; Rathbun, 1904: pl. 15, figs 8, 9; 1905: 180, fig. 45; 1933: 258; 1935: 26; Sendler, 1912: 199; Bouvier, 1921: 49; Colosi, 1925: 2; Parisi, 1925: 98; Barnard, 1950: 192, fig. 34 f, g.
Potamonautes Balss, 1929: 348; Barnard, 1935: 484; Capart, 1954: 841, fig. 36, 17; Cumberlidge, 1997: 580– 582; 1998: 198, 202–203.
Potamonautes (Obesopotamonautes) Bott, 1955: 257– 259, pl. XXII, figs 2a–d, 19, 80; Pretzmann, 1977: 238, figs 7–12.
Diagnosis: S3/4 deep, V-shaped, completely traversing sternum (or deep at margins, faint in the middle); outer margins of S4 raised and thickened; third maxilliped ischium lacking vertical suture (or if present faint); anterolateral margin of carapace posterior to epibranchial tooth either smooth or granulated, but lacking teeth; G1 TA short (TA length 0.25 × SA length), slim, either not widened in midsection (or dorsal fold slightly higher than ventral fold), tapering evenly to pointed tip (Fig. 5A, B).
Etymology: Maritimonautes is derived from the Latin maritimus, coastal, referring to the coastal plain of East Africa, east of the Rift Valley where this genus is found, and the Greek ναύτες, seamen, a common suffix for African freshwater crabs. Gender masculine.
Type species: Thelphusa obesa A. Milne-Edwards, 1868, by original designation.
S p e c i e s i n c l u d e d: M a r i t i m o n a u t e s c a l c a r a t u s (Gordon, 1929) comb. nov., Maritimonautes choloensis (Chace, 1953) comb. nov., Maritimonautes licoensis (Daniels, Bittencourt-Silva, Muianga, & Bayliss, 2020) comb. nov., Maritimonautes namuliensis (Daniels & Bayliss, 2012) comb. nov. and Maritimonautes obesus (A. Milne-Edwards, 1868) comb. nov.
Distribution: Maritimonautes is found in the lowlying coastal plains of Somalia, Kenya and Tanzania (plus Zanzibar and Pemba islands), including the north coast of Lake Malawi in Tanzania (Ruvuma, Iringa and Mbeya Provinces), Mounts Inago, Mabu, Namuli and Lico in northern Mozambique, Mount Nyangoni (Manicaland Province) in eastern Zimbabwe and the Kruger National Park in Mpumapanga Province, South Africa (Chace, 1953; Reed & Cumberlidge, 2004; Daniels & Bayliss, 2012; Daniels et al., 2014, 2020; Fig. 8B).
Remarks: Maritimonautes is established for five species formerly assigned to Potamonautes s.l. DNA data are available for five of these species that are grouped together in a well-supported clade (Daniels et al., 2015: fig. 2; Daniels & Klaus, 2018: fig. 1; Wood et al., 2019: fig. 1; Fig. 1B1). The most recently-described species of this genus (M. licoensis) from Mozambique is included based on morphology and the phylogeny published with the description (Daniels et al., 2020). Two of the species transferred here to Maritimonautes (M. calcaratus and M. obesus) were assigned by Bott (1955) to Potamonnautes (Obesopotamonautes) Bott, 1955. The latter subgenus is not recognized here, because it is not monophyletic: two of its three taxa belong to the new genus Maritimonautes (Fig. 1B1), but the third species, Platythelphusa langi, is positioned in a separate lineage for Platythelphusa (Fig. 1B 3 [3]).
Notes
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Linked records
Additional details
Identifiers
Biodiversity
- Family
- Potamonautidae
- Genus
- Maritimonautes
- Kingdom
- Animalia
- Order
- Decapoda
- Phylum
- Arthropoda
- Scientific name authorship
- Cumberlidge & Daniels
- Taxonomic status
- gen. nov.
- Taxon rank
- genus
- Taxonomic concept label
- Maritimonautes Cumberlidge & Daniels, 2022
References
- Milne-Edwards A. 1868. Description de quelques crustaces nouveaux. Nouvelles Annales du Museum d'Histoire Naturelle 4: 69 - 92.
- Pfeffer G. 1889. Uebersicht der von Herrn Dr. Franz Stuhlmann in Aegypten, auf Sansibar und dem gegenuberliegenden Festlande gesammelten Reptilien, Amphibien, Fische, Mollusken und Krebse. Jahrbuch der Hamburgischen Wissenschaftlichen Anstalten 6: 1 - 36.
- Hilgendorf F. 1879. Die von Hern. W. Peters in Mocambique gesammelten Crustaceen. Monatsberichte der Koniglichen Preussische Akademie des Wissenschaften zu Berlin 1878: 782 - 851.
- Ortmann AE. 1897. Carcinologische Studien. Zoologische Jahrbucher, Abteilung fur Systematik, Geographie und Biologie der Thiere 10: 256 - 372.
- De Man JG. 1898. Description d'une espece nouvelle du genre Potamon SAV. provenant du pays des Somalis. Annali del Museo Civico di Storia Naturale di Genova 19: 262 - 270.
- Chace FA. 1942. III. Decapod Crustacea. In: Scientific results of the fourth expedition to forested areas in eastern Africa. Bulletin of the Museum of Comparative Zoology, Harvard College 91: 185 - 233.
- Rathbun MJ. 1904. Les crabes d'eau douce (Potamonidae). Nouvelles Archives du Museum d'Histoire Naturelle de Paris 6: 255 - 312.
- Bouvier EL. 1921. Decapoda. In: Alluaud C, Jeannel R, Voyage de Ch, Alluaud R, eds. Jeannel en Afrique orientale (1911 - 1912). Resultats scientifiques, Crustaces, III. Paris: Librairie des Sciences Naturelles, 23 - 62.
- Balss H. 1929. Crustacea V. Potamonidae. In: Monod Th, ed. Contributions a l'etude de la faune du Cameroun. Faune des Colonies Francaises, Paris 3: 115 - 129.
- Barnard KH. 1935. Scientific results of the Vernay - Lang Kalahari Expedition, March to September 1930, Crustacea. Annals of the Transvaal Museum 16: 481 - 492.
- Capart A. 1954. Revision des types des especes de Potamonidae de l'Afrique tropicale conserves au Museum d'Histoire Naturelle de Paris. Volume Jubilaire de Victor Van Strallen, Directeur de l'Institut royal des Sciences naturelles de Belgique, 1925 - 1934 II: 819 - 847.
- Cumberlidge N. 1997. The African and Madagascan freshwater crabs In the Museum of Natural History. Vienna (Crustacea: Decapoda: Brachyura: Potamoidea). Annalen des Naturhistorischen Museums in Wien 998: 571 - 589.
- Cumberlidge N. 1998. The African and Madagascan freshwater crabs in the Zoologische Staatssammlung, Munich (Crustacea: Decapoda: Brachyura: Potamoidea). Spixiana 21: 193 - 214.
- Bott R. 1955. Die Susswasserkrabben von Africa und ihre Stammesgeschichte. Annales du Musee Royal du Congo Belge serie 3: 209 - 352.
- Pretzmann G. 1977. Uber einige ostafrikanische Susswasserkrabben. Monitore Zoologico Italiano, N. S. (Suppl. 9) 10: 233 - 248.
- Gordon I. 1929. A new river-crab of the subgenus Potamonautes from Portuguese East Africa. Annals of the Magazine of Natural History 3: 405 - 411.
- Chace FA. 1953. Zoological results of a fifth expedition to east Africa. Bulletin of the Museum of Comparative Zoology 110: 425 - 443.
- Daniels SR, Bayliss J. 2012. Neglected refugia of biodiversity: mountainous regions in Mozambique and Malawi yield three novel freshwater crab species (Potamonautidae: Potamonautes). Zoological Journal of the Linnean Society 164: 498 - 509.
- Daniels SR, Phiri EE, Klaus S, Albrecht C, Cumberlidge N. 2015. Multi-locus phylogeny of the Afrotropical freshwater crab fauna reveals historical drainage connectivity and transoceanic dispersal since the Eocene. Systematic Biology 64: 549 - 567.
- Cumberlidge N, Reed SK. 2004. Erimetopus vandenbrandeni (Balss, 1936) comb. nov., with notes on the taxonomy of the genus Erimetopus Rathbun, 1894 (Brachyura: Potamoidea: Potamonautidae) from Central Africa. Zootaxa 422: 1 - 27.
- Daniels SR, Phiri EE, Bayliss J. 2014. Renewed sampling of inland aquatic habitats in southern Africa yields two novel freshwater crab species (Decapoda: Potamonautidae: Potamonautes). Zoological Journal of the Linnean Society 171: 356 - 369.
- Daniels SR, Klaus S. 2018. Divergent evolutionary origins and biogeographic histories of two freshwater crabs (Brachyura: Potamonautes) on the West African conveyer belt islands of Sao Tome and Principe. Molecular Phylogenetics and Evolution 127: 119 - 128.
- Wood LE, De Grave S, Cumberlidge N, Kennerley A, Daniels SR. 2019. A phylogenetic perspective on biodiversity patterns of Afrotropical freshwater crabs (Crustacea, Decapoda, Potamonautidae). Aquatic Conservation: Marine and Freshwater Ecosystems 29: 2219 - 2230.
- Daniels SR, Bittencourt-Silva GB, Muianga V, Bayliss J. 2020. Phylogenetics of the freshwater crab (Potamonautes MacLeay, 1838) fauna from ' sky islands' in Mozambique with the description of a new species (Brachyura: Potamoidea: Potamonautidae). European Journal of Taxonomy 716: 1 - 23.