Seychellum

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Cladus: Protostomia
Cladus: Ecdysozoa
Cladus: Panarthropoda
Phylum: Arthropoda
Cladus: Pancrustacea
Superclassis: Multicrustacea
Classis: Malacostraca
Subclassis: Eumalacostraca
Superordo: Eucarida
Ordo: Decapoda
Subordo: Pleocyemata
Infraordo: Brachyura
Sectio: Eubrachyura
Subsectio: Heterotremata
Superfamilia: Potamoidea

Familia: Potamonautidae
Subfamilia: Deckeniinae
Genus: Seychellum
S. alluaudi – S. mahefregate – S. silhouette –
Name

Seychellum Ng, Števčić, & Pretzmann, 1995

Type species: Deckenia alluaudi A. Milne-Edwards & Bouvier, 1893
References
Cumberlidge, N. & Daniels, S.R. 2014. Recognition of two new species of freshwater crabs from the Seychelles based on molecular evidence (Potamoidea: Potamonautidae). Invertebrate systematics, 28(1): 17–31. DOI: 10.1071/IS13017 Paywall. Reference page.
Ng, P.K.L., Števčić, Z., and Pretzmann, G. (1995). A revision of the family Deckeniidae Ortmann, 1897 (Crustacea: Decapoda: Brachyura:Potamoidea), with description of a new genus (Gecarcinucoidea, Gecarcinucidae) from the Seychelles, Indian Ocean. Journal of Natural History 29: 581–600. DOI: 10.1080/00222939500770201 Paywall.
Savel R. Daniels 2011. Reconstructing the colonisation and diversification history of the endemic freshwater crab (Seychellum alluaudi) in the granitic and volcanic Seychelles Archipelago. Molecular Phylogenetics and Evolution, 61(2): 534–542. doi:10.1016/j.ympev.2011.07.015. PMID 21824522.