References

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

Becker, L. (1896). Les arachnides de Belgique, deuxième et troisième parties. Annales du Musée Royal d'Histoire Naturelle de Belgique 12(2): 1-127, pl. 1-25 & 12(3): 1-378, pl. 1-18. doi: 10.5962/bhl.title.48721 -- Show included taxa

Blackwall, J. (1833). Characters of some undescribed genera and species of Araneidae. London and Edinburgh Philosophical Magazine and Journal of Science (3) 3(14, 15, 17, 18): 104-112, 187-197, 344-352, 436-443. doi: 10.1080/14786443308648135 [, 10.1080/14786443308648155, 10.1080/14786443308648198, 10.1080/14786443308648224] -- Show included taxa

Blackwall, J. (1836). Characters of some undescribed species of Araneidae. London and Edinburgh Philosophical Magazine and Journal of Science (3) 8(49): 481-491. doi: 10.1080/14786443208647870 -- Show included taxa

Blackwall, J. (1864a). A history of the spiders of Great Britain and Ireland. Part II. Ray Society, London, pp. 175-384, pl. 13-29. doi: 10.5962/bhl.title.143674 -- Show included taxa

Bösenberg, W. (1902). Die Spinnen Deutschlands. II-IV. Zoologica (Stuttgart) 14(2-4): 97-384, pl. 9-36. doi: 10.5962/bhl.title.6508 -- Show included taxa

Brignoli, P. M. (1980k). Ragni d'Italia XXXIII. Il genere Robertus (Araneae, Theridiidae). Fragmenta Entomologica 15: 259-265. -- Show included taxa

Bristowe, W. S. (1941). The comity of spiders. Volume II. Ray Society, London, pp. 229-560, pl. 20-22. -- Show included taxa

Charitonov, D. E. (1926a). Materialy k faune paukov Cherdynskogo kraia. Izvestia Biologitschieskogo nauchno-issliedovatel’skogo Instituta pri Permskom Universitete 4: 257-272. -- Show included taxa

Chyzer, C. & Kulczyński, W. (1894). Araneae Hungariae. Tomus II. Academia Scientarum Hungaricae Budapest, pp. 1-151, Pl. I-V. -- Show included taxa

Eskov, K. Y. (1987b). The spider genus Robertus O. Pickard-Cambridge in the USSR, with an analysis of its distribution (Arachnida: Araneae: Theridiidae). Senckenbergiana Biologica 67: 279-296. -- Show included taxa

Fage, L. (1931). Araneae, 5e série, précédée d'un essai sur l'évolution souterraine et son déterminisme. In: Biospeologica, LV. Archives de Zoologie Expérimentale et Générale 71: 99-291. -- Show included taxa

Förster, A. & Bertkau, P. (1883). Beiträge zur Kenntniss der Spinnenfauna der Rheinprovinz. Verhandlungen des Naturhistorischen Vereins der Preussischen Rheinlande und Westfalens 40: 205-278. -- Show included taxa

Heimer, S. (1982). Interne Arretierungsmechanismen an der Kopulationsorganen männlicher Spinnen (Arachnida, Araneae). Ein Beitrag zur Phylogenie der Araneoidea. Entomologische Abhandlungen, Staatliches Museum für Tierkunde Dresden 45: 35-64. -- Show included taxa

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

Hull, J. E. (1920b). Blackwall's Spiders of Great Britain & Ireland. The Vasculum 6(2): 29-32. -- Show included taxa

Izmailova, M. V. (1989). [Fauna of Spiders of South Part of Eastern Siberia]. Irkutsk State University Publishing, 184 pp. -- Show included taxa

Kaston, B. J. (1946). North American spiders of the genus Ctenium. American Museum Novitates 1306: 1-19. -- Show included taxa

Keyserling, E. (1886b). Die Spinnen Amerikas. Theridiidae. Bauer & Raspe, Nürnberg 2, 1-295. doi: 10.5962/bhl.title.64832 -- Show included taxa

Knoflach, B. (1992). Neue Robertus-Funde in den Alpen: R. mediterraneus Eskov und Robertus sp. (Arachnida, Aranei: Theridiidae). Berichte des Naturwissenschaftlich-Medizinischen Vereins in Innsbruck 79: 161-171. -- Show included taxa

Knoflach, B. & Pfaller, K. (2004). Kugelspinnen – eine Einführung (Araneae, Theridiidae). In: Thaler, K. (ed.) Diversität und Biologie von Webspinnen, Skorpionen und anderen Spinnentieren. Denisia 12: 111-160. -- Show included taxa

Kulczyński, W. (1887). Przyczynek do tyrolskiej fauny pajeczakow. Rozprawy i Sprawozdania z Posiedzen Wydzialu Matematyczno Przyrodniczego Akademji Umiejetnosci, Krakow 16: 245-356 (+ appendix, pp. 1-12). -- 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

Lessert, R. de (1910b). Catalogue des invertebres de la Suisse. Fasc. 3, Araignées. Musée d'histoire naturelle de Genève, 635 pp. -- Show included taxa

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

Menge, A. (1871). Preussische Spinnen. IV. Abtheilung. Schriften der Naturforschenden Gesellschaft in Danzig (N. F.) 2: 265-296. -- 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

Roewer, C. F. (1942a). Katalog der Araneae von 1758 bis 1940. 1. Band (Mesothelae, Orthognatha, Labidognatha: Dysderaeformia, Scytodiformia, Pholciformia, Zodariiformia, Hersiliaeformia, Argyopiformia). Natura, Buchhandlung für Naturkunde und exakte Wissenschaften Paul Budy Bremen, 1040 pp. -- Show included taxa

Simon, E. (1884a). Les arachnides de France. Tome cinquième, deuxième et troisième partie. Roret, Paris, pp. 180-885, pl. 26-27. -- Show included taxa

Smith, F. P. (1900b). An introduction to British spiders [continued]. Science-Gossip New Series 7(73, 74, 77, 78, 79): 14-16, 45-47, 138-140, 166-167, 206-207. -- Show included taxa

Thaler, K. (1968). Zum Vorkommen von Porrhomma-Arten in Tirol und anderen Alpenländern (Arachn., Araneae, Linyphiidae). Berichte des Naturwissenschaftlich-Medizinischen Vereins in Innsbruck 56: 361-388. -- Show included taxa

Thorell, T. (1871a). Remarks on synonyms of European spiders. Part II. C. J. Lundström, Uppsala, pp. 97-228. doi: 10.5962/bhl.title.69282 -- Show included taxa

Thorell, T. (1873). Remarks on synonyms of European spiders. Part IV. C. J. Lundström, Uppsala, pp. 375-645. doi: 10.5962/bhl.title.69282 -- Show included taxa

Tystshenko, V. P. (1971). Opredelitel' paukov evropejskoj chasti SSSR. Leningrad, 281 pp. -- Show included taxa

Westring, N. (1851). Förteckning öfver de till närvarande tid Kände, i Sverige förekommande Spindlarter, utgörande ett antal af 253, deraf 132 äro nya för svenska Faunan. Göteborgs Kungliga Vetenskaps och Vitterhets Samhälles Handlingar 2: 25-62. -- Show included taxa

Westring, N. (1861). Araneae svecicae. Göteborgs Kungliga Vetenskaps och Vitterhets Samhälles Handlingar 7: 1-615. [[publ. also as separate in 1862]] -- Show included taxa

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

Wunderlich, J. (1986). Spinnenfauna gestern und heute: Fossile Spinnen in Bernstein und ihre heute lebenden Verwandten. Quelle & Meyer, Wiesbaden, 283 pp. -- Show included taxa