References

Agnarsson, I., Coddington, J. A. & Knoflach, B. (2007). Morphology and evolution of cobweb spider male genitalia (Araneae, Theridiidae). Journal of Arachnology 35(2): 334-395. doi: 10.1636/SH-06-36.1 -- Show included taxa

Almquist, S. (2005). Swedish Araneae, part 1 – families Atypidae to Hahniidae (Linyphiidae excluded). Insect Systematics & Evolution, Supplement 62: 1-284. -- Show included taxa

Bauchhenss, E. & Uhlenhaut, H. (1993). Robertus kuehnae n. sp., eine neue Kleintheridiide aus Mitteleuropa (Arachnida, Araneae, Theridiidae). Entomologische Nachrichten und Berichte 37: 25-28. -- Show included taxa

Dresco, E. (1959b). Sur quelques espèces du genre Robertus (Araneae, Theridiidae). Description de R. alpinus et R. cardesensis spp. nov. Bulletin du Muséum National d'Histoire Naturelle de Paris (2) 31: 242-247. -- Show included taxa

Gruia, M. (1973b). Sur quelques espèces de Theridiidae de la faune de Roumanie. Quelques considérations sur les organes copulateurs. Travaux de l’Institut de Spéologie “Émile Racovitza” 12: 75-85. -- Show included taxa

Heimer, S. & Nentwig, W. (1991). Spinnen Mitteleuropas: Ein Bestimmungsbuch. Paul Parey, Berlin, 543 pp. -- Show included taxa

Jackson, A. R. (1914). A contribution to the spider fauna of Scotland. Proceedings of the Royal Physical Society of Edinburgh 19: 107-128. -- Show included taxa

Le Peru, B. (2011). The spiders of Europe, a synthesis of data: Volume 1 Atypidae to Theridiidae. Mémoires de la Société Linnéenne de Lyon 2: 1-522. -- Show included taxa

Locket, G. H. & Millidge, A. F. (1953). British spiders. Vol. II. Ray Society, London, 449 pp. -- Show included taxa

Locket, G. H., Millidge, A. F. & La Touche, A. A. D. (1958). On new and rare British spiders. Annals and Magazine of Natural History (13) 1(2): 137-146. doi: 10.1080/00222935808650930 -- Show included taxa

Locket, G. H., Millidge, A. F. & Merrett, P. (1974). British Spiders, Volume III. Ray Society, London, 315 pp. -- Show included taxa

Machado, A. de B. (1949). Araignées nouvelles pour la faune portugaise (III). Memorias e Estudos do Museu Zoologico da Universidade de Coimbra 191: 1-69. -- Show included taxa

Mcheidze, T. S. (1997). [Spiders of Georgia: Systematics, Ecology, Zoogeographic Review]. Tbilisi University, 390 pp. (in Georgian). [[English version published by Otto (2014) available here]] -- Show included taxa

Miller, F. (1967). Studien über die Kopulationsorgane der Spinnengattung Zelotes, Micaria, Robertus und Dipoena nebst Beschreibung einiger neuen oder unvollkommen bekannten Spinnenarten. Přírodovědné práce ústavů Československé Akademie Věd v Brně (N.S.) 1: 251-298. -- Show included taxa

Miller, F. (1971). Pavouci-Araneida. Klíč zvířeny ČSSR 4: 51-306. -- Show included taxa

Palmgren, P. (1974b). Die Spinnenfauna Finnlands und Ostfennoskandiens. V. Theridiidae und Nesticidae. Fauna Fennica 26: 1-54. -- Show included taxa

Roberts, M. J. (1985). The spiders of Great Britain and Ireland, Volume 1: Atypidae to Theridiosomatidae. Harley Books Colchester, England, 229 pp. -- Show included taxa

Roberts, M. J. (1995). Collins Field Guide: Spiders of Britain & Northern Europe. HarperCollins London, 383 pp. -- Show included taxa

Roberts, M. J. (1998). Spinnengids. Tirion Baarn, Netherlands, 397 pp. -- Show included taxa

Schenkel, E. (1923). Beitrag zur Spinnenkunde. Beiträge zur Kenntnis der Wirbellosen terrestrischen Nivalfauna der schweizerischen Hochgebirge. Liestal, 1919. Verhandlungen der Naturforschenden Gesellschaft in Basel 34: 78-127. -- Show included taxa

Simon, E. (1914). Les arachnides de France. Synopsis générale et catalogue des espèces françaises de l'ordre des Araneae. Tome VI. 1re partie. Roret, Paris, pp. 1-308. -- Show included taxa

Wiehle, H. (1937). Spinnentiere oder Arachnoidea. 26. Familie. Theridiidae oder Haubennetzspinnen (Kugelspinnen). Die Tierwelt Deutschlands 33: 119-222. -- Show included taxa

Wiehle, H. (1960b). Beiträge zur Kenntnis der deutschen Spinnenfauna. Zoologische Jahrbücher, Abteilung für Systematik, Geographie und Biologie der Tiere 88: 195-254. -- Show included taxa

Wunderlich, J. (1976a). Zur Spinnenfauna Deutschlands, XVI. Zur Kenntnis der mitteleuropäischen Arten der Gattungen Enoplognatha Pavesi und Robertus O. Pick.-Cambridge. Senckenbergiana Biologica 57(1/3): 97-112. -- Show included taxa