Pilumnus is een geslacht van krabben. Voor de Belgische en Nederlandse kust, behoort enkel het ruig krabbetje tot dit geslacht.
Soortenlijst Volgende soorten worden onderscheiden: (2008). Systema Brachyurorum: Part 1. An Annotated checklist of extant Brachyuran crabs of the world, Raffles Bulletin of Zoology, Supplement Series, No. 17, 286pp. Pilumnus acanthosoma Ng, 2000 Pilumnus acer Rathbun, 1923 Pilumnus acutifrons Rathbun, 1906 Pilumnus aestuarii Nardo, 1869 Pilumnus affinis Brito Capello, 1875 Pilumnus alcocki Borradaile, 1902 Pilumnus annamensis Takeda & Miyake, 1968 Pilumnus australis Whitelegge, 1900 Pilumnus balssi Takeda & Miyake, 1972 Pilumnus bleekeri Miers, 1880 Pilumnus braueri Balss, 1933 Pilumnus caerulescens A. Milne-Edwards, 1873 Pilumnus capillatus Ng, Dai & Yang, 1997 Pilumnus caribaeus Desbonne, in Desbonne & Schramm, 1867 Pilumnus ceylonicus Deb, 1987 Pilumnus chani Ng & Ho, 2003 Pilumnus comatus Ng, Dai & Yang, 1997 Pilumnus contrarius Rathbun, 1923 Pilumnus cursor A. Milne-Edwards, 1873 Pilumnus danai Stimpson, 1907 Pilumnus dasypodus Kingsley, 1879 Pilumnus deflexus A. Milne-Edwards, 1867 Pilumnus depressus Stimpson, 1871 Pilumnus digitalis Rathbun, 1923 Pilumnus diomedeae Rathbun, 1894 Pilumnus elegans De Man, 1888 Pilumnus etheridgei Rathbun, 1923 Pilumnus eudaemoneus Nobili, 1905 Pilumnus fernandezi Garth, 1973 Pilumnus fissifrons Stimpson, 1858 Pilumnus floridanus Stimpson, 1871 Pilumnus gemmatus Stimpson, 1860 Pilumnus gonzalensis Rathbun, 1894 Pilumnus gracilipes A. Milne-Edwards, 1880 Pilumnus granti Montogomery, 1931 Pilumnus guinotae Takeda & Miyake, 1968 Pilumnus habei Takeda & Miyake, 1972 Pilumnus haswelli De Man, 1888 Pilumnus hirtellus (Linnaeus, 1761) (ruig krabbetje) Pilumnus holosericus Rathbun, 1898 Pilumnus humilis Miers, 1884 Pilumnus ikedai Takeda & Miyake, 1968 Pilumnus incanus (Forskål, 1775) {6} Pilumnus inermis A. Milne-Edwards & Bouvier, 1894 Pilumnus infraciliaris Ortmann, 1894 Pilumnus integifrons Shen, 1948 Pilumnus investigatoris Deb, 1987 Pilumnus izuogasawarensis Takeda & Ng, 1997 Pilumnus karachiensis Deb, 1987 Pilumnus kempi Deb, 1987 Pilumnus kingstoni (Rathbun, 1923) Pilumnus koepckei Türkay, 1967 Pilumnus lacteus Stimpson, 1871 {4} Pilumnus laevigatus (Rathbun, 1911) Pilumnus lanatus Latreille, 1825 Pilumnus limosus Smith, 1869 Pilumnus longicornis Hilgendorf, 1878 Pilumnus longipes A. Milne-Edwards, 1873 Pilumnus longleyi Rathbun, 1930 Pilumnus lumpinus Bennett, 1964 Pilumnus maccullochi Montogomery, 1931 Pilumnus maldivensis Borradaile, 1902 Pilumnus marshi Rathbun, 1901 Pilumnus merodentatus Nobili, 1906 Pilumnus minutus De Haan, 1835 Pilumnus monilifera Haswell, 1882 Pilumnus murphyi Ng, 1988 Pilumnus neglectus Balss, 1933 Pilumnus nobilii Garth, 1948 Pilumnus normani Miers, 1886 Pilumnus novaezealandiae Filhol, 1885 Pilumnus nudimanus Rathbun, 1901 Pilumnus nuttingi Rathbun, 1906 Pilumnus oahuensis Edmondson, 1931 Pilumnus ohshimai Takeda & Miyake, 1970 Pilumnus orbitospinis Rathbun, 1911 Pilumnus pannosus Rathbun, 1896 Pilumnus parableekeri Ng & L. W. H. Tan, 1984 Pilumnus parapilumnoides Takeda & Miyake, 1970 Pilumnus parvulus Nobili, 1906 Pilumnus peronii H. Milne Edwards, 1834 Pilumnus perrieri A. Milne-Edwards & Bouvier, 1898 Pilumnus pileiferus Ng & L. W. H. Tan, 1984 Pilumnus propinquus Nobili, 1905 Pilumnus prunosus Whitelegge, 1897 Pilumnus pulcher Miers, 1884 Pilumnus purpureus A. Milne-Edwards, 1873 Pilumnus pygmaeus Boone, 1927 {5} Pilumnus quoii H. Milne Edwards, 1834 Pilumnus ransoni Forest & Guinot, 1961 Pilumnus reticulatus Stimpson, 1860 Pilumnus rotumanus Borradaile, 1900 Pilumnus rotundus Borradaile, 1902 Pilumnus rubroseta Ng, Dai & Yang, 1997 Pilumnus rufopunctatus Stimpson, 1858 Pilumnus savignyi Heller, 1861 Pilumnus sayi Rathbun, 1923 Pilumnus scabriusculus Adams & White, 1849 Pilumnus schellenbergi Balss, 1933 Pilumnus semilanatus Miers, 1884 Pilumnus semilunaris Ng, Dai & Yang, 1997 Pilumnus senahai Takeda & Miyake, 1968 Pilumnus serenei Ng, 1988 Pilumnus sluiteri De Man, 1892 Pilumnus spinicarpus Grant & McCulloch, 1906 Pilumnus spinifer H. Milne Edwards, 1834 Pilumnus spinifrons Ng & L. W. H. Tan, 1984 Pilumnus spinohirsutus (Lockington, 1877) Pilumnus spinosissimus Rathbun, 1898 Pilumnus spinosus Filhol, 1885 Pilumnus spinulus Shen, 1932 Pilumnus stebbingi Capart, 1951 Pilumnus stimpsonii Miers, 1886 Pilumnus striatus De Man, 1888 Pilumnus taeniola Rathbun, 1906 Pilumnus tahitensis De Man, 1890 Pilumnus takedai Ng, 1988 Pilumnus tantulus Rathbun, 1923 Pilumnus tectus Rathbun, 1933 Pilumnus teixeiranus Brito Capello, 1875 Pilumnus tenellus Dana, 1852 Pilumnus terraereginae Haswell, 1882 Pilumnus thoe (Herbst, 1803) Pilumnus tomentosus Latreille, 1825 Pilumnus townsendi Rathbun, 1923 Pilumnus tuantaoensis Shen, 1948 Pilumnus turgidulus Rathbun, 1911 Pilumnus vespertilio (Fabricius, 1793) Pilumnus vestitus Haswell, 1882 Pilumnus villosissimus (Rafinesque, 1814) Pilumnus woodworthi Rathbun, 1902 Pilumnus xantusii Stimpson, 1860 Pilumnus zimmeri Balss, 1933