Robertus (spider) explained

Robertus is a genus of comb-footed spiders that was first described by Octavius Pickard-Cambridge in 1879.^[1] It is considered a senior synonym of Garritus.^[2]

Species

it contains forty-seven species, found in Europe, Asia, North America, the Congo, and on Greenland:^[3]

• 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)

See also

• List of Theridiidae species

Notes and References

1. Pickard-Cambridge. O.. 1879. The spiders of Dorset. Araneidea. Proceedings of the Dorset Natural History and Antiquarian Field Club. 1–235. 1. Octavius_Pickard-Cambridge.
2. Kaston. B. J.. 1946. North American spiders of the genus Ctenium. American Museum Novitates. 1306. 1.
3. Gen. Robertus O. Pickard-Cambridge, 1879. World Spider Catalog Version 20.0. 2019-10-27. 2019. Natural History Museum Bern. 10.24436/2.