Raninoides crosnieri Ribes, 1989

Muñoz, Isabel, García-Isarch, Eva & Cuesta, Jose A., 2021, Annotated and updated checklist of marine crabs (Decapoda: Brachyura) of Mozambique supported by morphological and molecular data from shelf and slope species of the “ MOZAMBIQUE ” surveys, Zootaxa 5056 (1), pp. 1-67 : 18

publication ID	https://doi.org/10.11646/zootaxa.5056.1.1
publication LSID	lsid:zoobank.org:pub:D20A249C-1CA4-45F8-8677-D2011A8380A4
DOI	https://doi.org/10.5281/zenodo.5592636
persistent identifier	https://treatment.plazi.org/id/03D487F8-2135-FFF3-FF71-DCD2BF1EFF10
treatment provided by	Plazi (2021-10-19 07:27:05, last updated 2024-11-25 18:47:24)
scientific name	Raninoides crosnieri Ribes, 1989
status

Treatment

Raninoides crosnieri Ribes, 1989 View in CoL

( Figure 4B View FIGURE 4 )

Material examined. M07, Stn. 40, 190m, ♂ 16.2× 27.1mm (IEO-CD-MZ07/1910), 16S ( MZ 424922 View Materials ) .

Habitat and distribution. The known distribution of Raninoides crosnieri is the type locality, Madagascar, at depths between 160 and 210m ( Ribes 1989).

Results and remarks. Only one specimen was recorded at 190m depth in M07. It is a male mostly agreeing with the description of R. crosnieri given by Ribes (1989), although not completely. There are characteristics that clearly distinguish it from Raninoides personatus Henderson , the other similar species of the Indian Ocean, and agree with the R. crosnieri description, such as: a sub-distal spine in the carpus of the chelipeds (although it is accompanied by a distal one) and the edge of the carpus rough; the upper edge of P4 somewhat concave; on the upper edge of P5 which there are indications that there was a spine in each, which are broken. However, the rostrum of this specimen (see Figure 5A View FIGURE 5 ) differs with that described by Ribes (1989) for R. crosnieri (see Figure 5B View FIGURE 5 ), and rather fits the description of the rostrum of R. personatus “rounded at its end” (see Figure 5C View FIGURE 5 ). Ribes (1989) considered the rostrum shape as one of the main differences separating R. crosnieri from R. personatus , and therefore this new evidence put under question the taxonomic validity of this feature.

This is the first record of R. crosnieri in Mozambique waters, and the second one of this species worldwide.

Colouration observed. The cephalothorax and pleon were orange-brown, with marble-like spots. The legs and chelipeds were light beige, with some not very well-defined faint brown-orange spots.

DNA barcodes. There are not sequences available for this species on any public database. The 526 bp sequence of 16S obtained for the specimen IEO-CD-MZ07/1910 is the first genetic marker for this species.

Section EUBRACHYURA Saint Laurent, 1980

Subsection HETEROTREMATA Guinot, 1977

Superfamily CALAPPOIDEA De Haan, 1833 [in De Haan, 1833 –1850]

Family CALAPPIDAE De Haan, 1833 [in De Haan, 1833 –1850]

According to Davie et al. (2015a), this family includes nine genera and 89 species. Only two of these genera have been recorded in Mozambican waters, Calappa Weber and Mursia Desmarest ( Emmerson 2016b,c; Lai & Ng 2006; Spiridonov & Apel 2007). Calappidae crabs are known as box-crabs and inhabit from shallow to deep waters, usually burying ( Davie et al. 2015a).

References

Davie, P. J. F., Guinot, D. & Ng, P. K. L. (2015 a) Systematics and classification of Brachyura. In: Castro, P., Davie, P. J. F., Guinot, D., Schram, F. & Von Vaupel Klein, J. C. (Eds.), Treatise on Zoology - Anatomy, Taxonomy, Biology. The Crustacea, 9 C (I), Decapoda: Brachyura. Part 2. Brill, Leiden and Boston, pp. 1049 - 1130. https: // doi. org / 10.1163 / 9789004190832 _ 021

Emmerson, W. D. (2016 b). A guide to, and checklist for, the Decapoda of Namibia, South Africa and Mozambique. Vol. 2. Cambridge Scholars Publishing, Newcastle upon Tyne, 645 pp.

Guinot, D. (1977) Propositions pour une nouvelle classification des Crustaces Decapodes Brachyoures. Comptes Rendus hebdomadaires des seances de l'Academie des Sciences de Paris, Series D, 285, 1049 - 1052.

Haan, W. de (1833 - 1850) Crustacea. In: von Siebold, P. F. (Ed.). Fauna Japonica sive Descriptio Animalium, quae in Itinere per Japoniam, Jussu et Auspiciis Superiorum, qui Summum in India Batava Imperium Tenent, Suscepto, Annis 1823 - 1830 Collegit, Noitis, Observationibus et Adumbrationibus Illustravit. Lugduni-Batavorum, Leiden, pp. 1 - 243.

Lai, J. C. Y. & Ng, P. K. L (2006) A new species of Calappa Weber, 1795 (Crustacea: Decapoda: Calappidae) from East and South Africa. Zootaxa, 1358 (1), 39 - 48. https: // doi. org / 10.11646 / zootaxa. 1358.1.2

Ribes, S. (1989). Les Raninidae du sud-ouest de l'ocean Indien (Crustacea, Decapoda, Brachyura). Bulletin du Museum national d'Histoire naturelle, Series 4, Section A, 11 (4), 905 - 919.

Saint Laurent, M. de (1980) Sur la classification et la phylogenie des Crustaces Decapodes Brachyoures. I. Podotremata, Guinot, 1977, et Eubrachyura sect. nov. Comptes Rendus hebdomadaires des seances de l'Academie des Sciences, Series D, 290, 1265 - 1268.

Spiridonov, V. A. & Apel, M. (2007) A new species and new records of deep-water Calappidae (Crustacea: Decapoda) from de Indian Ocean with a key to the Mursia Desmarest, 1823 species of the region. Journal of Natural History, 41, 2851 - 2890. https: // doi. org / 10.1080 / 00222930701770786

Figures

FIGURE 4. A, Lyreidus brevifrons, ♂ IEO-CD-MZ08/1771; B, Raninoides crosnieri, ♂ IEO-CD-MZ07/1910; C, Calappa africana, ♀ IEO-CD-MZ08/1815; D, C. africana, ♂ IEO-CD-MZ08/1797; E, Mursia africana, ♂, IEO-CD-MZ08/1797; F, Mursia aspera, ♂ IEO-CD-MZ07/1903 (preserved); G, Mursia flamma, ♀ IEO-CD-MZ07/1904; H, Mursia sp, ♂ IEO-CD- MZ09/1775. Scale bars: 1cm.

FIGURE 5. Rostrum. A, Raninoides crosnieri ♂ IEO-CD-MZ07/1910; B, Raninoides crosnieri; C, Raninoides personatus. B and C after Ribes (1989). Scale bars: 1cm.