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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: Pilumnoidea

Familia: Pilumnidae
Subfamilia: Pilumninae
Genus: Actumnus
Species: A. griffini

BHL bibliography
Actumnus – Taxon details on Encyclopedia of Life (EOL).
Global Biodiversity Information Facility. 2019. GBIF Backbone Taxonomy. Checklist dataset. Taxon: Actumnus.

Actumnus is a genus of crabs in the family Pilumnidae. Alongside the 28 extant species, it has a fossil record extending back into the Miocene.[2]

Actumnus contains 28 extant species:[3]

Actumnus amirantensis Rathbun, 1911
Actumnus anthelmei Ward, 1942
Actumnus arbutum Alcock, 1898
Actumnus asper (Rüppell, 1830)
Actumnus calypso (Herbst, 1801)
Actumnus davoensis Ward, 1941
Actumnus digitalis (Rathbun, 1907)
Actumnus dorsipes (Stimpson, 1858)
Actumnus elegans De Man, 1888
Actumnus fissifrons Alcock, 1898
Actumnus forficigerus (Stimpson, 1858)
Actumnus globulus Heller, 1891
Actumnus granotuberosus Garth & Kim, 1983
Actumnus griffini Takeda & Webber, 2006
Actumnus intermedius Balss, 1922
Actumnus margarodes MacGilchrist, 1905
Actumnus marissinicus Takeda & Miyake, 1977
Actumnus miliaris A. Milne-Edwards, 1865
Actumnus obesus Dana, 1852
Actumnus parvulus A. Milne-Edwards, 1865
Actumnus setifer (De Haan, 1835)
Actumnus setosiareolatus Takeda, 1977
Actumnus similis Takeda & Miyake, 1969
Actumnus simplex Rathbun, 1911
Actumnus squamosus (De Haan, 1835)
Actumnus taiwanicus Ho, Yu & Ng, 2001
Actumnus targionii Cano, 1889
Actumnus tesselatus Alcock, 1898

Two further species are known only from fossils.[1]

Sammy De Grave; N. Dean Pentcheff; Shane T. Ahyong; et al. (2009). "A classification of living and fossil genera of decapod crustaceans" (PDF). Raffles Bulletin of Zoology. Suppl. 21: 1–109. Archived from the original (PDF) on 2011-06-06.
Hiroaki Karasawa; Carrie E. Schweitzer (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. doi:10.1163/18759866-0750102002. Archived from the original (PDF) on 2016-03-03. Retrieved 2010-01-16.
Peter K. L. Ng; Danièle Guinot; Peter J. F. Davie (2008). "Systema Brachyurorum: Part I. An annotated checklist of extant Brachyuran crabs of the world" (PDF). Raffles Bulletin of Zoology. 17: 1–286. Archived from the original (PDF) on 2011-06-06.


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