Linyphiidae  Blackwall, 1859 / Silometopus  Simon, 1926   15 species

Silometopus ambiguus  (O. Pickard-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 (Deltshev et al. 2011b) and Spain (Barrientos et al. 2019b) doubtful, therefore removed or not counted here (see Blick 2014)
Global distribution (WSC 2023): Western and northern Europe, Germany
 male  female
Distribution List

"No references" does not mean that the species does not occur in this country, but that we have not yet inserted the reference for it. We are working on it.

Belgium   (Bosmans & Samu, 2020; Bosmans & Van Keer, 2017) ||| Denmark   (no references) ||| Faroe Islands   (Lissner et al., 2016b) ||| Finland   (Koponen et al., 2016) ||| France   (no references) ||| Germany   (no references) ||| Iceland   (Agnarsson, 1996) ||| Ireland   (Lavery, 2019) ||| Netherlands   (no references) ||| Northern Ireland   (Lavery, 2019) ||| Norway   (Aakra & Hauge, 2003) ||| Russia, Northern   (Nekhaeva, 2020) ||| United Kingdom   (Lavery, 2019) |||

Aakra K, Hauge E (2003) Checklist of Norwegian spiders (Arachnida: Araneae), including Svalbard and Jan Mayen. Norwegian Journal of Entomology 50: 109-129 pdf

Agnarsson I (1996) Íslenskar köngulær Fjölrit Náttúrufræðistofnunar 31: 1-175 pdf

Barrientos J A, Arco L del, Castañé C, Agustí N, Jauset A M, Batuecas I, Alomar Ó (2019b) Arañas epiedáficas (Aranjeae [sic]) en plantaciones de melocotoneros del Segrià, el Bajo Cinca y La Litera (España). Revista Ibérica de Aracnología 34: 41-50 pdf

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

Bosmans R, Samu F (2020) Confirmation of Silometopus curtus (Araneae: Linyphiidae) in Hungary. Arachnologische Mitteilungen 60: 27-29 pdf

Bosmans R, Van Keer K (2017) Een herziene soortenlijst van de Belgische spinnen (Araneae). Nieuwsbrief van de Belgische Arachnologische Vereniging 32: 39-69 pdf

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

Fjellberg A (unpubl.)

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

Koponen S, Fritzén N R, Pajunen T (2016) Checklist of spiders in Finland (Araneae). 6th version, December 2016, online at pdf

Lavery A (2019) A revised checklist of the spiders of Great Britain and Ireland. Arachnology 18: 196-212 pdf

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. Vol. II. Ray Society, London, 449 pp. pdf

Locket G H, Millidge A F, Merrett P (1974) British Spiders, Volume III. Ray Society, London, 315 pp. pdf

Løvbrekke H (unpubl.)

Nekhaeva A A (2020) On the spider fauna (Arachnida: Aranei) of the Kanin Peninsula and Kolguev Island, Nenets Autonomous Okrug, Russia. Arthropoda Selecta 29: 387-398 pdf

Roberts M J (1987) The spiders of Great Britain and Ireland. Volume 2: Linyphiidae and checklist. Harley Books Colchester, England, 204 pp. pdf

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

WSC (2023) World Spider Catalog. Version 24. Natural History Museum Bern, online at (14.02.2023) doi: 10.24436/2 pdf

06-05-2021 Datasheet update Detail
02-10-2020 Distribution update Detail
23-09-2020 Image insert
23-09-2020 Distribution update Detail
06-01-2020 Image insert
03-06-2014 Distribution update Detail
04-12-2013 Distribution update Detail