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De forges B.R., Lee B.Y. & Ng P.K.L. 2021. The taxonomy of spider crabs of the genera Eurynome, Choniognathus, Seiitaiodes and Kasagia (Crustacea: Brachyura: Majidae) from southwest Indian Ocean. Zootaxa 5048(3): 301-333. DOI:10.11646/zootaxa.5048.3.1
Résumé [+]
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The taxonomy of majid spider crabs collected from recent southwest Indian Ocean cruises belonging to Eurynome Leach, 1814, and allied genera is treated. Eurynome longimana Stimpson, 1857, long synonymised with the European E. aspera (Pennant, 1777), is here recognised as a distinct species. Stimpson’s (1857) species can be distinguished by the armature of granules on the third maxilliped, proportions and armature of the ambulatory merus, relatively shorter ambulatory dactylus, structure of the male sternopleonal cavity and relative proportions of the male first gonopod. The composition of Choniognathus Rathbun, 1932, is discussed and the type species, C. koreensis Rathbun, 1932, is figured. One species, C. verhoeffi (Balss, 1929), is not considered to be a member of Choniognathus and its taxonomy is discussed. A new spinose species, C. spinosus, is also described. Seiitaoides Griffin & Tranter, 1986, is revised, and two new species, S. mirabilis and S. kabuto, are described and compared with S. orientalis (Sakai, 1961) and S. stimpsoni (Miers, 1884). The poorly known Eurynome elegans Stebbing, 1921 is rediscovered, its taxonomy clarified and the species is shown to belong to Kasagia Richer de Forges & Ng, 2007. A second species of Kasagia, K. sudhakari Padate, Manjebrayakath & Ng, 2019, recently described from the Arabian Sea is recorded from southwest Indian Ocean.
Campagnes accessibles citées (4) [+]
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Codes des collections associés:
IU (Crustacés)
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Lee B.Y., Ng N.K. & Ng P.K. 2013. On the identity of Clistocoeloma balansae A. Milne-Edwards, 1873, and C. tectum (Rathbun, 1914), with description of a new species from the West Pacific (Crustacea: Decapoda: Sesarmidae). Zootaxa 3641(4): 420-432. DOI:10.11646/zootaxa.3641.4.8
Résumé [+]
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The identity of the mangrove sesarmid crab Clistocoeloma balansae A. Milne-Edwards, 1873, is clarified on the basis of
the types from New Caledonia, and fresh material from Vanuatu and the Philippines. Sesarma (Sesarma) tectum Rathbun,
1914, is shown to be a junior subjective synonym of C. balansae A. Milne-Edwards, 1873. A new species, C. melanesicum,
superficially similar to C. balansae, is described from Vanuatu, New Caledonia, and, Solomon Islands.
Campagnes accessibles citées (2) [+]
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Codes des collections associés:
IU (Crustacés)
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Lee B.Y., Richer de forges B. & Ng P.K. 2017. Deep-sea spider crabs of the families Epialtidae MacLeay, 1838 and Inachidae MacLeay, 1838, from the South China Sea, with descriptions of two new species (Decapoda, Brachyura, Majoidea). European Journal of Taxonomy 358: 1-37. DOI:10.5852/ejt.2017.358
Campagnes accessibles citées (3) [+]
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Codes des collections associés:
IU (Crustacés)
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Lee B.Y., De forges B.R. & Ng P.K.L. 2019. Deep-sea spider crabs of the family Epialtidae MacLeay, 1838, from PapuaNew Guinea, with a redefinition of Tunepugettia Ng, Komai & Sato, 2017, and descriptions of two new genera (Crustacea: Decapoda: Brachyura: Majoidea). Zootaxa 4619(1): 1-44. DOI:10.11646/zootaxa.4619.1.1
Résumé [+]
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The deep-water epialtid spider crab (superfamily Majoidea) material collected from recent French expeditions to Papua New Guinea (BIOPAPUA 2010, PAPUA NIUGINI 2012, MADEEP 2014, and KAVIENG 2014) was studied. In addition to several new records for the country, five new species of Oxypleurodon Miers, 1885, Rochinia A. Milne-Edwards, 1875, and Tunepugettia Ng, Komai & Sato, 2017, are described. The taxonomy of Tunepugettia is reappraised, and a new genus, Crocydocinus n. gen., is established, characterised by its smooth ambulatory legs and a distinct male first gonopod structure. Four species from the Bay of Bengal, Sumatra, and Réunion Island, currently placed in Rochinia and Tunepugettia are transferred to Crocydocinus n. gen. and four new species from Papua New Guinea, Philippines, and Vanuatu are described. A new genus, Neophrys n. gen., with one new species from Papua New Guinea, is established, and is characterised by the supraorbital eave being fused with the carapace and the poorly developed pre-orbital angle.
Campagnes accessibles citées (6) [+]
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Codes des collections associés:
IU (Crustacés)
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Lee B.Y., Richer de forges B. & Ng P.K.L. 2021. The generic affinities of the Indo-West Pacific species assigned to Rochinia A. Milne-Edwards, 1875 (Crustacea: Brachyura: Majoidea: Epialtidae). Raffles Bulletin of Zoology 69: 19-44. DOI:10.26107/RBZ-2021-0004
Résumé [+]
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The single most species-rich genus in the majoid family
Epialtidae MacLeay, 1838, is Rochinia A. Milne-Edwards,
1875. Ng et al. (2008) listed 34 species and since then the
number of species has continued to grow, especially in the
Indo-West Pacific region (see Takeda, 2001; Takeda &
Komatsu, 2005; Ng & Richer de Forges, 2007; Richer de
Forges & Poore, 2008; Takeda, 2009; McLay, 2009; Ng
& Richer de Forges, 2013; Richer de Forges & Ng, 2013;
Takeda & Marumura, 2014; Lee et al., 2017; Lee et al., 2019).
The systematic problems with the genus are well known;
Rochinia, as defined by Griffin & Tranter (1986a) was too
broad and clearly polyphyletic. Rochinia sensu Griffin &
Tranter (1986a) includes four synonyms: Sphenocarcinus A.
Milne-Edwards, 1875, Scyramathia A. Milne-Edwards, 1880,
Anamathia Smith, 1885, and Oxypleurodon Miers, 1885.
Griffin & Tranter (1986a) also transferred three species that
were described under Hyastenus White, 1847, and Pugettia
Dana, 1851, to Rochinia. Goniopugettia Sakai, 1986, a genus
overlooked by Griffin & Tranter (1986a), included Rochinia
sagamiensis (Gordon, 1930), and was recognised by Ng et al.
Campagnes accessibles citées (11) [+]
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AURORA 2007,
BIOPAPUA,
DongSha 2014,
KAVIENG 2014,
MADEEP,
MUSORSTOM 5,
NanHai 2014,
PANGLAO 2005,
SALOMONBOA 3,
TARASOC,
ZhongSha 2015
Codes des collections associés:
IU (Crustacés)
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Lee B.Y., Richer de forges B. & Ng P.K.L. 2021. The generic affinities of the Indo-West Pacific species assigned to Rochinia A. Milne-Edwards, 1875 (Crustacea: Brachyura: Majoidea: Epialtidae). Raffles Bulletin of Zoology 68: 1944. DOI:10.26107/RBZ-2021-0004
Résumé [+]
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The generic positions of the 29 Indo-West Pacific species currently placed in Rochinia A. Milne-Edwards, 1875, sensu lato, are addressed, in an attempt to establish a more phylogenetically coherent classification for these spider crabs. Twenty-five Indo-West Pacific species are referred to a redefined Samadinia Ng & Richer de Forges, 2013. Three species are transferred to Laubierinia Richer de Forges & Ng, 2009, Pugettia Dana, 1851, and Oxypleurodon Miers, 1885, respectively. Rochinia kagoshimensis (Rathbun, 1932) and a new species from the South China Sea are assigned to a new genus. The generic status of four Atlantic species of Rochinia is also discussed.
Campagnes accessibles citées (4) [+]
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Codes des collections associés:
IU (Crustacés)
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Ng P.K.L., Lee B.Y. & Richer de forges B. 2021. Revision of Majella Ortmann, 1893 (Crustacea: Brachyura: Majidae), with Description of Two New Species from the Indian Ocean. Zoological Studies 60(15). DOI:10.6620/ZS.2021.60-15
Résumé [+]
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The poorly known majid genus Majella Ortmann, 1893, is revised. The genus was previously known only from one species, M. brevipes Ortmann, 1893, described from Japan and reported from east Africa. Majella brevipes 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: M. skolopion n. sp. and M. pristis n. sp.; they differ markedly from M. brevipes (now restricted to Japan) in the arrangement of spines on the carapace and pereopods, third maxillipeds, male pleon and gonopods.
Campagnes accessibles citées (2) [+]
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Codes des collections associés:
IU (Crustacés)