Cyrtomaia gaillardi Guinot & Richer de Forges, 1982

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 : 34-35

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.5577778
persistent identifier	https://treatment.plazi.org/id/03D487F8-2105-FFC3-FF71-D9D7B849FD6C
treatment provided by	Plazi (2021-10-19 07:27:05, last updated 2024-11-25 18:47:24)
scientific name	Cyrtomaia gaillardi Guinot & Richer de Forges, 1982
status

Treatment

Cyrtomaia gaillardi Guinot & Richer de Forges, 1982 View in CoL

( Figures 9E,F View FIGURE 9 )

Material examined. M07, Stn. 52, 556m, ♀ 67.5× 60mm ( CW × PRL) (IEO-CD-MZ07/1925) ; M08, Stn. 39, 631m, ♂ 62× 59.9mm (IEO-CD-MZ08/1788); M09, Stn. 27, 543m, ♂ 66× 64.5mm (IEO-CD-MZ09/1807); M09, Stn. 32, 529m, ♂ 63× 57.3mm (IEO-CD-MZ09/1808), 16S ( MZ 424952 View Materials ) .

Habitat and distribution. This species is distributed in Madagascar, Nicobar Island and Indonesia ( Guinot & Richer de Forges 1982a).

Results and remarks. The specimens were identified following the key of Guinot & Richer de Forges (1982a,b, 1984, 1986). Four specimens of Cyrtomaia gaillardi were studied, that had been collected during the three surveys (M07, M08 and M09), at depths between 529 and 631m. Although this species was recorded off Madagascar ( Guinot & Richer de Forges 1982a), it is not registered in any checklist of the area ( WIO) ( Barnard, 1950; Emmerson 2016b,c; Kensley 1981; Poupin 2010, 2018), being C. murrayi Miers the only species of this genus cited in the area. Therefore, these specimens are the first record of C. gaillardi in Mozambique waters. Subsequently, in April 2009, one specimen was collected during the MB-exp ( GBIF.org 2021, unpublished record).

Colouration observed. Specimens were light orange, with whitish finger tips, dactylus and proximal region of the merus.

DNA barcodes. There are not 16S sequences available for this genus in Genbank, except for a short sequence of 164 bp of Cyrtomaia owstoni deposited by Komai et al. (2019) that fits 100% with the 16S sequence (552 bp) of C. gaillardi . Considering the short length of the sequence and the low number of mutations expected at congeneric level nothing could be concluded. According to Guinot & Richer de Forges (1982a), C. owstoni has long branchial spines, these being the longest of the dorsal side of carapace, while protogastric spines are the longest in C. gaillardi . These clear morpholofical features make it difficult to confuse both species. Unfortunately, not COI sequence was obtained, although in any case there is not any COI sequence available in Genbank or BOLD for comparison.

References

Barnard, K. H. (1950) Descriptive catalogue of South African Decapod Crustacea (crabs and shrimps). Annals of the South African Museum, 38, 1 - 837.

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. & Richer de Forges, B. (1982 a) Nouvelles recoltes des genres Cyrtomaia Miers et Pleistacantha Miers (Crustacea, Decapoda, Brachyura). Bulletin du Museum national d'Histoire naturelle, Series 4, 3, Section A, 4, 1087 - 1125.

Kensley, B. (1981) On the zoogeography of southern African Decapod Crustacea, with a distributional checklist of the species. Smithsonian Contributions to Zoology, 338, 1 - 64.

Komai, T., Gotoh, R. O., Sado, T. & Miya, M. (2019) Development of a new set of PCR primers for eDNA metabarcoding decapod crustaceans. Metabarcoding and Metagenomics, 3 (e 33835), 1 - 19. https: // doi. org / 10.3897 / mbmg. 3.33835

Poupin, J. (2010) Biodiversite de l'Indo-Pacifique tropical francais 2514 especes de crustaces decapodes et stomatopodes. Rapport scientifique de l'Institut de Recherche de l'Ecole Navale. 76 pp.

Poupin, J., Cleva, R., Bouchard, J. - M., Dinhut, V. & Dumas, J. (2018) The crabs from Mayotte Island (Crustacea, Decapoda, Brachyura). Atoll Research Bulletin, 617, 1 - 109. https: // doi. org / 10.5479 / si. 0077 - 5630.617

Figures

FIGURE 9. A, Oxypleurodon difficilis, ♂ IEO-CD-MZ08/1774; B, Naxioides robillardi, ♀ IEO-CD-MZ07/1892; C, Samadinia galathea, ♂ IEO-CD-MZ09/1802-1; D, Samadinia pulchra, ♂ IEO-CD-MZ07/1893; E,F, Cyrtomaia gaillardi, ♂ IEO-CD- MZ08/1788; G, Platymaia alcocki, ♂ IEO-CD-MZ08/1789. Scale bars: 1cm.