Linyphiidae  Blackwall, 1859 / Silometopus  Simon, 1926   13 species

Silometopus ambiguus  (O. P.-Cambridge, 1906)


Tibial apophysis with short, straight process. Prosoma brown to dark brown, radial stripes and margin black. Legs yellow-brown. Opisthosoma black, leather-like.

Body length male: 1.3-1.6 mm
Body length female: 1.5-2.2 mm
Additional information

Almost only in coastal areas


Figures by Wiehle (1960a) und Locket & Millidge (1953) of Silometopus curtus have been transferred to Silometopus ambiguus because of misidentification (Locket et al. 1974; Blick, 2014)

Character states from linyphiid key
  No data
Distribution comment: Records from Albania and Spain doubtful, therefore removed (see Blick 2014)
Global distribution (WSC 2019): Western and northern Europe
 male  female

Blick T (2014) The long-lasting story of the wrong naming of Silometopus ambiguus as S. curtus (Araneae: Linyphiidae). Arachnologische Mitteilungen 47: 45-48

Deltshev C, Vrenozi B, Blagoev G, Lazarov S (2011b) Spiders of Albania – faunistic and zoogeographical review (Arachnida: Araneae). Acta Zoologica Bulgarica 63: 125-144

Heimer S, Nentwig W (1991) Spinnen Mitteleuropas. Paul Parey Berlin pdf

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

Lissner J, Jensen J-K, Hansen L J, Simonsen W, Kelduni R, Nissen K (2016b) An updated checklist of spiders (Araneae) of the Faroe Islands. Norwegian Journal of Entomology 63: 197-240 pdf

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

Locket G H, Millidge A F, Merrett P (1974) British Spiders 3. Ray Soc London

Løvbrekke H (unpubl.)

Roberts M J (1987) The spiders of Great Britain and Ireland. Volume 2: Linyphiidae and checklist. Harley Books Colchester

Wiehle H (1960a) Spinnentiere oder Arachnoidea (Araneae). XI. Micryphantidae-Zwergspinnen. Tierwelt Deutschlands 47: 1-620

World Spider Catalog (2019) World Spider Catalog, version 20.0. Natural History Museum Bern, online at (20.01.2019) doi: 10.24436/2

03-06-2014 Distribution update Old value
04-12-2013 Distribution update Old value