Theridiidae  Sundevall, 1833 / Rugathodes  Archer, 1950   4 species

Rugathodes instabilis  (O. Pickard-Cambridge, 1871)

Description

Prosoma light yellow-brown with dark median band, reaching from posterior end to eye region. Sternum yellowish. Chelicerae light brown, male: very long, with large conical tooth. Legs yellow-brown, unicoloured, rarely darkened on joints. Opisthosoma yellowish brown, dorsally with large brown spot, a longitudinal band, or unicoloured.

Body length male: 2-3 mm
Body length female: 2-3 mm
Additional information

In high vegetation of humid forests and meadows, preferring mountainous region

Frequency: Rarely found, widely distributed

Distribution
  Presence
  No data
Global distribution (WSC 2020): Europe, Russia (Europe to West Siberia)
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
Distribution List
Austria   ( no references ) ||| Belgium   ( no references ) ||| Czechia   ( no references ) ||| Denmark   ( no references ) ||| Finland   ( Koponen et al., 2016; ) ||| France   ( no references ) ||| Germany   ( no references ) ||| Hungary   ( no references ) ||| Ireland   ( no references ) ||| Italy   ( Pantini & Isaia, 2019; ) ||| Liechtenstein   ( no references ) ||| Netherlands   ( no references ) ||| Northern Ireland   ( no references ) ||| Poland   ( no references ) ||| Romania   ( no references ) ||| Russia, Central   ( no references ) ||| Russia, Eastern   ( no references ) ||| Russia, Southern   ( no references ) ||| Slovakia   ( no references ) ||| Spain   ( no references ) ||| Sweden   ( no references ) ||| Switzerland   ( no references ) ||| Ukraine   ( Polchaninova & Prokopenko, 2019; ) ||| United Kingdom   ( no references ) |||
References

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

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

Locket G H, Millidge A F (1953) British Spiders 2. Ray Soc London

Pajunen T, Väisänen R A (2015) First records of spiders (Araneae) Baryphyma gowerense (Locket, 1965) (Linyphiidae), Entelecara flavipes (Blackwall, 1834) (Linyphiidae) and Rugathodes instabilis (O. P.-Cambridge, 1871) (Theridiidae) in Finland. Memoranda Societatis pro Fauna et Flora Fennica 91: 44-50

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

Polchaninova N, Prokopenko E (2019) An updated checklist of spiders (Arachnida: Araneae) of Left-Bank Ukraine. Arachnologische Mitteilungen 57: 60-64 & App pdf

Roberts M J (1995) Spiders of Britain and Northern Europe. Collins Field Guide Bath

Szinetár C, Kovács P (2013) Pókfaunisztikai vizsgálatok a szentbékkállai Fekete-hegyen [The arachnological results of the 5th Hungarian Biodiversity Day at Fekete Hill (Balaton Uplands)]. Folia Musei Historico-Naturalis Bakonyiensis 29: 65-72 pdf

Wiehle H (1937) Spinnentiere oder Arachnoidea, VIII. 26: Familie Theridiidae oder Haubennetzspinnen (Kugelspinnen). Tierwelt Deutschlands 33

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

Updates
11-03-2018 Distribution update Detail
28-12-2015 Distribution update Detail