Dairoides margaritatus Stebbing, 1920 GONEPLACIDAE MacLeay, 1838

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 : 23-25

publication ID	https://doi.org/10.11646/zootaxa.5056.1.1
publication LSID	lsid:zoobank.org:pub:D20A249C-1CA4-45F8-8677-D2011A8380A4
persistent identifier	https://treatment.plazi.org/id/03D487F8-2132-FFF7-FF71-DA2FBCD6F81F
treatment provided by	Plazi
scientific name	Dairoides margaritatus Stebbing, 1920 GONEPLACIDAE MacLeay, 1838
status

Treatment

Dairoides margaritatus Stebbing, 1920

( Figure 8B View FIGURE 8 )

Material examined. M07, Stn. 84, 129m, ♀ 39.7× 26.1mm (IEO-CD-MZ07/1911), 16S ( MZ 424932 View Materials ), COI ( MZ 434778 View Materials ) .

Habitat and distribution. It could be an endemism of southern Africa, distributed from KwaZulu-Natal to Mozambique ( Stebbing 1920; Barnard 1950; Guinot 1967a,b; Kensley 1981; Emmerson 2016b,c) at depths between 20 to 180m ( Kensley 1981).

Results and remarks. One female specimen of Dairoides margaritatus was collected in M07 at 129m. The keys by Guinot (1967b) were used for identification.

Colouration observed. Pictures of the fresh specimen are not available.

DNA barcodes. There are not 16S and COI sequences of this species on any public database, and therefore, these are the first ones. In Genbank there are only one 16S ( HM 637979 View Materials ) and one COI ( HM 638030 View Materials ) sequences available for Dairoides kusei based in one specimen ( ULLZ 9183) from Hawaii obtained by Lai et al. (2014). The 16S sequence differs in three mutations (in 533 bp, 99.43% similarity) that could be in the intrageneric range, as well as in the case of the COI sequence varying in 58 positions (in 588 bp). The results (especially for COI sequence) of the BLAST and BOLD searches also suggest the affinity of Dairoides with Parthenopidae , as already pointed out by Lai et al. (2014).

Superfamily GONEPLACOIDEA MacLeay, 1838

Family GONEPLACIDAE MacLeay, 1838

This family has been extensively studied and consequently, has experienced many taxonomic changes in recent years ( Castro 2007; Davie 2002; Karasawa & Kato 2003; Karasawa & Schweitzer 2006). According to Davie et al. (2015a) the family includes 20 genera and 90 species, most of them restricted to the IWP. Only two genera have been cited in Mozambican waters, Carcinoplax H. Milne-Edwards and Psopheticus Wood-Mason.

Family GONEPLACIDAE MacLeay, 1838

References

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

Castro, P. (2007) A reappraisal of the family Goneplacidae MacLeay, 1838 (Crustacea, Decapoda, Brachyura) and revision of the subfamily Goneplacinae, with the description of 10 new genera and 18 new species. Zoosystema, 29 (4), 609 - 774.

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. (1967 a) La faune carcinologique (Crustacea Brachyura) de l'ocean Indien Occidental et de la Mer Rouge. Catalogue, remarques biogeographiques et bibliographie. Reunion de specialistes C. S. A. sur les crustaces, Zanzibar 1964. Memoires de l'Institut Fondamentale d'Afrique Noire, 72 (2), 237 - 352.

Guinot, D. (1967 b) Recherches preliminaires sur les groupements naturels chez les Crustaces Decapodes Brachyoures. III. A propos des affinites des genres Dairoides Stebbing et Daira de Haan. Bulletin du Museum national d'Histoire naturelle, Series 2, 39, 540 - 563.

Karasawa, H. & Kato, H. (2003) The phylogeny, systematics and fossil record of the Goneplacidae MacLeay (Crustacea, Decapoda, Brachyura) revisited. Contributions to Zoology, 72 (2 - 3), 147 - 152. https: // doi. org / 10.1163 / 18759866 - 0720203016

Karasawa, H. & Schweitzer, C. E. (2006) A new classification of the Xanthoidea sensu lato (Crustacea, Decapoda, Brachyura) based on phylogenetic analysis and traditional systematics and evaluation of all fossil Xanthoidea sensu lato. Contributions to Zoology, 75 (1 / 2), 23 - 73. https: // doi. org / 10.1163 / 18759866 - 0750102002

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.

Lai, J. C. Y., Thoma, B. P., Clark, P. F., Felder, D. L., Ng, P. K. L. (2014) Phylogeny of eriphioid crabs (Brachyura, Eriphioidea) inferred from molecular and morphological studies. Zoologica Scripta, 43, 52 - 64. https: // doi. org / 10.1111 / zsc. 12030

MacLeay, W. S. (1838) On the brachyurus Crustacea brought from the Cape by Dr Smith. In: Smith Elder & Co. (Eds.), Illustrations of the Zoology of South Africa, 5, Invertebratae. Smith Elder & Co., London, pp. 53 - 71.

Stebbing, T. R. R. (1920) South African Crustacea. Part X. Annals of the South African Museum, 17, 231 - 272.

Figures

FIGURE 8. A, Platepistoma guezei, ♀ IEO-CD-MOZ07/279; B, Dairoides margaritatus, ♀ IEO-CD-MZ07/1911 (preserved); C, Carcinoplax ischurodous, ♂ IEO-CD-MZ08/1824; D, Carcinoplax longimanus, ♂ IEO-CD-MZ08/1787; E, Carcinoplax longimanus, ♀ IEO-CD-MZ08/1851; F, Tanaoa pustulosus, ♀ IEO-CD-MZ08/1776; G, Euclosiana exquisita, ♀ IEO-CD- MZ08/1757. Scale bars: 1cm.