Johannes Govertus de Man (2 May 1850 in Middelburg – 9 January 1930 in Middelburg), was a Dutch biologist. He was assistant curator at the (Dutch for national natural history museum) in Leiden, where he specialised in free-living nematodes and decapod crustaceans, although he also wrote papers on flatworms, sipunculids and, in his dissertation only, vertebrates. His change away from vertebrates disappointed the director of the museum, and de Man left his job there after eleven years. For the rest of his life, de Man worked at his parents' house in Middelburg and later at a house near the shore at Yerseke in the Oosterschelde estuary, relying on his family's private income.
Taxa named after de Man
Anachis demani De Jong & Coomans, 1988 Anchistus demani Kemp, 1922 Araeolaimus demani (Schuurmans-Stekhoven, 1950) Wieser, 1956 Axonolaimus demani De Coninck & Stekhoven, 1933 Caridina demani J. Roux, 1911 Charybdis (Goniosoma) demani Leene, 1937 Chromadorina demani Inglis, 1962 Clibanarius demani Buitendijk, 1937 Criconema demani Micoletzky, 1925 Demania Laurie, 1906 Demaniella Steiner, 1914 Demanietta Bott, 1966 Demanietta manii (Rathbun, 1904) Dracograllus demani Allen & Noffsinger, 1978 Dromia (Cryptodromia) de Manii Alcock, 1899 (a synonym of Cryptodromia amboinensis De Man, 1888) Eleutherolaimus demani (Rouville, 1903) Engina demani De Jong & Coomans, 1988 Etisus demani Odhner, 1925 Exopalaemon mani (Sollaud, 1914) Gonodactylellus demanii (Henderson, 1893) Hemicycliophora demanii (Edward & Rai, 1971) Labuanium demani (Bürger, 1893) Manella Rathbun, 1906 Metapenaeus demani (J. Roux, 1922) Metoncholaimus demani (Zur Strassen, 1894) Molgolaimus demani Jensen, 1978 Neoliomera demani Forest & Guinot, 1962 Palaemon sundaicus De Mani Nobili, 1899 (a synonym of Macrobrachium equidens (Dana, 1852)) Panulirus demani Borradaile, 1899 (a synonym of P. versicolor (Latreille, 1804)) Percnon demani Ward, 1934 Periclimenes demani Kemp, 1915 Petrarctus demani (Holthuis, 1963) Phascolosoma (Satonus) demanni (Sluiter, 1891) Pontophilus demani Chace, 1984 Processa demani Hayashi, 1975 Pseudocollodes demani Balss, 1929 Rhabdodemania Baylis & Daubney, 1926 Richtersia demani Stekhoven, 1935 Sabatieria demani Bresslau & Stekhoven in Stekoven, 1935 Scyllarus demani Holthuis, 1946 Synalpheus demani Borradaile, 1899 Thalamita de Mani Nobili, 1905 (a synonym of T. invicta Thallwitz, 1891) Tricoma demanema, Chromadorita demaniana Filipjev, 1922 Uca demani Ortmann, 1897 Uca manii Rathbun, 1909 (a synonym of U. forcipata (Adams & White, 1848)) Urocaris de Mani Balss, 1916 (a synonym of Periclimenes scriptus (Risso, 1822)) Vir Holthuis, 1952 (Latin = man) Xantho demani Odhner, 1925 (a synonym of Lachnopodus subacutus (Stimpson, 1858)) Zozymodea demani (Odhner, 1925)
Taxa named by de Man
De Man described many new taxa in his lifetime, mostly for crustaceans and nematodes. His crustacean taxa include 30 genera and 523 new species, while his nematode taxa comprise 8 new families, 61 new genera and 239 new species. Taxa described by de Man include: Alope orientalis De Man, 1906 Alpheus rapacida De Man, 1908 Caridina gracilirostris De Man, 1892 Caridina serratirostris De Man, 1892 Cuapetes amymone De Man, 1902 Eiconaxius sibogae De Man, 1925 Geosesarma De Man, 1892 Laomenes amboinensis (De Man, 1888) Lysmata amboinensis De Man, 1888 Macrobrachium rosenbergii (De Man, 1879) Neosarmatium inerme De Man, 1887 Neosarmatium meinerti De Man, 1887 Palinurellus wieneckii (De Man, 1881) Perisesarma De Man, 1895 Sesarma eulimene De Man, 1895 Thor amboinensis (De Man, 1888)
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