Robertus (spider)

Robertus is a genus of comb-footed spiders that was first described by Octavius Pickard-Cambridge in 1879. It is considered a senior synonym of Garritus.

Species
it contains forty-seven species, found in Europe, Asia, North America, the Congo, and on Greenland:
 * Robertus alpinus Dresco, 1959 – Italy
 * Robertus arcticus (Chamberlin & Ivie, 1947) – USA (Alaska)
 * Robertus arundineti (O. Pickard-Cambridge, 1871) – Europe, Turkey, Caucasus, Russia (Europe to South Siberia), Kazakhstan, Central Asia, China
 * Robertus banksi (Kaston, 1946) – USA, Canada
 * Robertus borealis (Kaston, 1946) – USA, Canada
 * Robertus brachati Wunderlich, 2011 – Turkey
 * Robertus calidus Knoflach, 1995 – Congo
 * Robertus cantabricus Fage, 1931 – Spain
 * Robertus cardesensis Dresco, 1959 – Spain
 * Robertus crosbyi (Kaston, 1946) – USA, Canada
 * Robertus emeishanensis Zhu, 1998 – China
 * Robertus eremophilus Chamberlin, 1928 – USA
 * Robertus floridensis (Kaston, 1946) – USA
 * Robertus frivaldszkyi (Chyzer, 1894) – Central and south-eastern Europe
 * Robertus frontatus (Banks, 1892) – USA, Canada
 * Robertus fuscus (Emerton, 1894) – USA, Canada, Greenland
 * Robertus golovatchi Eskov, 1987 – Georgia
 * Robertus heydemanni Wiehle, 1965 – Sweden, Germany, Austria, Italy, Romania, Ukraine, Russia (Europe to West Siberia), Kazakhstan
 * Robertus insignis O. Pickard-Cambridge, 1908 – Europe
 * Robertus kastoni Eskov, 1987 – Russia (Middle Siberia to Russian Far East), Japan
 * Robertus kuehnae Bauchhenss & Uhlenhaut, 1993 – Belgium, Switzerland, Germany, Austria
 * Robertus laticeps (Keyserling, 1884) – USA
 * Robertus lividus (Blackwall, 1836) – USA (Alaska), Europe, Caucasus, Russia (Europe to Far East), Iran
 * Robertus longipalpus (Kaston, 1946) – USA, Canada
 * Robertus lyrifer Holm, 1939 – Iceland, Scandinavia, Austria, Russia (Europe to Far East), Canada
 * Robertus mazaurici (Simon, 1901) – France
 * Robertus mediterraneus Eskov, 1987 – Mediterranean, Switzerland, Austria, Eastern Europe, Caucasus
 * Robertus monticola Simon, 1914 – France
 * Robertus naejangensis Seo, 2005 – Korea
 * Robertus neglectus (O. Pickard-Cambridge, 1871) (type) – Europe, Russia (Europe to South Siberia), Kazakhstan
 * Robertus nipponicus Yoshida, 1995 – Japan
 * Robertus nojimai Yoshida, 2002 – Japan
 * Robertus ogatai Yoshida, 1995 – Japan
 * Robertus peregrinus Yang, Irfan & Peng, 2019 – China
 * Robertus potanini Schenkel, 1963 – China
 * Robertus pumilus (Emerton, 1909) – USA
 * Robertus riparius (Keyserling, 1886) – USA, Canada
 * Robertus saitoi Yoshida, 1995 – Japan
 * Robertus scoticus Jackson, 1914 – Europe, Caucasus, Russia (Europe to Middle Siberia)
 * Robertus sibiricus Eskov, 1987 – Russia (Middle Siberia to Far East), Japan
 * Robertus similis (Kaston, 1946) – USA
 * Robertus spinifer (Emerton, 1909) – USA
 * Robertus subtilis Seo, 2015 – Korea
 * Robertus truncorum (L. Koch, 1872) – France to Ukraine
 * Robertus ungulatus Vogelsanger, 1944 – Europe, Russia (South Siberia to Far East), China
 * Robertus ussuricus Eskov, 1987 – Russia (Far East)
 * Robertus vigerens (Chamberlin & Ivie, 1933) – USA, Canada

In synonymy:
 * R. asper (O. Pickard-Cambridge, 1871) = Robertus neglectus (O. Pickard-Cambridge, 1871)
 * R. exortus (Drensky, 1929, T from Agroeca) = Robertus frivaldszkyi (Chyzer, 1894)
 * R. fuscus (Emerton, 1911) = Robertus fuscus (Emerton, 1894)
 * R. grasshoffi Wunderlich, 1973 = Robertus neglectus (O. Pickard-Cambridge, 1871)
 * R. palustris (Banks, 1892) = Robertus laticeps (Keyserling, 1884)
 * R. paradoxus Miller, 1967 = Robertus ungulatus Vogelsanger, 1944
 * R. terrestris (Emerton, 1913) = Robertus frontatus (Banks, 1892)
 * R. umbilicatus Denis, 1961 = Robertus mazaurici (Simon, 1901)