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.

Species
Actumnus contains 28 extant species:


 * 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.