Resources:
Theridiidae  Sundevall, 1833 / Robertus  O. Pickard-Cambridge, 1879   19 species

Robertus ungulatus  Vogelsanger, 1944

Description

Cymbium distally with 2 robust denticles. Epigyne with flat, strongly sclerotised groove. Vulva with very short entrance ducts. Prosoma yellow-brown, shiny, darker margin only vague. Sternum dark brown. Chelicerae yellow-brown, robust. Legs brown, unicoloured, short and robust. Opisthosoma yellowish grey to almost black.

Body length male: 2-2.5 mm
Body length female: 2-2.5 mm
Additional information

In sunny, but very damp localities under stones and leaves

Frequency: Rarely found

Distribution
  Presence
  No data
Global distribution (WSC 2020): Europe, Russia (South Siberia to Far East), China
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
Distribution List
Austria   (no references) ||| Czechia   (no references) ||| Denmark   (no references) ||| Estonia   (no references) ||| Finland   (Koponen et al., 2016) ||| Germany   (no references) ||| Italy   (Pantini & Isaia, 2019) ||| Lithuania   (no references) ||| Norway   (no references) ||| Poland   (no references) ||| Russia, Kaliningrad Region   (no references) ||| Slovakia   (no references) ||| Switzerland   (no references) |||
References

Farlund M (2019) Norwegian Spiders - Norske edderkopper. Siste oppdatering for funn av nye arter 10. oktober, 2019. Online at http://crocea.wordpress.com/norsk-artsliste/

Helsdingen P J van (2010a) Araneae. In: Fauna Europaea Database (Version 2010.1), online at www.european-arachnology.org

Kielhorn K-H (2016) Beitrag zur Kenntnis der Webspinnen und Weberknechte in Berlin und Brandenburg. Märkische Entomologische Nachrichten 17(2): 261-286 pdf

Koponen S, Fritzén N R, Pajunen T (2016) Checklist of spiders in Finland (Araneae). 6th version, December 2016, online at http://biolcoll.utu.fi/arach/checklist_of_spiders_in_Finland.htm pdf

Løvbrekke H (unpubl.)

Mikhailov K G (2013) The spiders (Arachnida: Aranei) of Russia and adjacent countries: a non-annotated checklist. Arthropoda Selecta, Supplement 3: 1-262 pdf

Miller F (1967) Studien über die Kopulationsorgane der Spinnengattung Zelotes, Micaria, Robertus und Dipoena nebst Beschreibung einiger neuen oder unvollkommen bekannten Spinnenarten. Acta Sc Nat Brno 1: 251-298

Pantini P, Isaia M (2019) Araneae.it: the online catalog of Italian spiders, with addenda on other arachnid orders occurring in Italy (Arachnida: Araneae, Opiliones, Palpigradi, Pseudoscorpionida, Scorpiones, Solifugae). http://araneae.it. Fragmenta Entomologica 51: 127-152 pdf

World Spider Catalog (2020) World Spider Catalog. Version 21.0. Natural History Museum Bern, online at http://wsc.nmbe.ch (20.03.2020) doi: 10.24436/2 pdf

Wunderlich J (1976) Zur Kenntnis der mitteleuropäischen Arten der Gattung Enoplognatha Pavesi und Robertus O. Pick. Cambridge Senckenbergiana Biologica 57: 97-112

Updates
13-12-2018 Image insert
11-11-2018 Image insert
18-12-2014 Image insert
26-02-2014 Distribution update Detail