Silometopus incurvatus (O. Pickard-Cambridge, 1873)
Description
Male
Tibial apophysis large and bent. Embolus very robust.
Prosoma brown to dark brown, eye region, median spot, and weak radial stripes black. Male: descending ± uniformly towards posterior end. Legs brown, distally blackish. Opisthosoma black.
Female
Epigyne with rounded posterior margin.
Body length female: 1.4-1.7 mmDistribution
Phenology
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
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Figures
Pedipalp
(Heimer & Nentwig 1991)
Pedipalp
(Roberts 1987)
Pedipalp
(Locket & Millidge 1953)
Pedipalp
(Løvbrekke unpubl.)
Pedipalp, dorsal view
(Kielhorn 2025b)
Palpal tibia
(Roberts 1987)
Palpal tibia, dorsal view
(Løvbrekke unpubl.)
Palpal tibia, retrolateral view
(Holm 1977)
Palpal tibia, dorsal view
(Holm 1977)
Tibial apophysis
(Heimer & Nentwig 1991)
Tibial apophysis
(Locket & Millidge 1953)
Prosoma, lateral view
(Heimer & Nentwig 1991)
Prosoma, lateral view
(Roberts 1987)
Prosoma, lateral view
(Løvbrekke unpubl.)
Epigyne
(Heimer & Nentwig 1991)
Epigyne
(Roberts 1987)
Epigyne
(Roberts 1987)
Epigyne
(Roberts 1987)
Epigyne
(Roberts 1987)
Epigyne
(Løvbrekke unpubl.)
Epigyne
(Holm 1977)
Vulva
(Heimer & Nentwig 1991)
Vulva
(Locket et al. 1974)
Vulva, dorsal view
(Løvbrekke unpubl.)
Vulva, dorsal view
(Fjellberg unpubl.)
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.
References
Aakra K, Hauge E (2003) Checklist of Norwegian spiders (Arachnida: Araneae), including Svalbard and Jan Mayen. Norwegian Journal of Entomology 50: 109-129 
Blick T, Finch O-D, Harms K H, Kiechle J, Kielhorn K-H , Kreuels M, Malten A, Martin D, Muster C, Nährig D, Platen R, Rödel I, Scheidler M, Staudt A, Stumpf H, Tolke D (2016) Rote Liste und Gesamtartenliste der Spinnen (Arachnida: Araneae) Deutschlands. 3. Fassung, Stand April 2008, einzelne Änderungen und Nachträge bis August 2015. Naturschutz und Biologische Vielfalt 70/4: 383-510
Bosmans R, Van Keer K (2017) Een herziene soortenlijst van de Belgische spinnen (Araneae). Nieuwsbrief van de Belgische Arachnologische Vereniging 32: 39-69
Esyunin S L, Efimik V E (1996a) Catalogue of the spiders (Arachnida, Aranei) of the Urals. KMK Scientific Press, Moscow, 228 pp.
Fjellberg A (unpubl.) .
Heimer S, Nentwig W (1991) Spinnen Mitteleuropas. Paul Parey Berlin
Helsdingen P J van (2025a) Catalogus van de Nederlandse spinnen. Versie 2025.1. 249 pp.
Holm Å (1977) Two new species of the erigonine genera Savignia and Silometopus (Araneae: Linyphiidae) from Swedish Lapland. Entomologica Scandinavica 8: 161-166
Kielhorn K-H (2025b) Silometopus acutus ist ein jüngeres Synonym von Silometopus bilacunatus (Araneae: Linyphiidae). Arachnologische Mitteilungen 70: 50-53
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
Krasnobaev Y P (2004) [Spider catalogue (Aranei) of the Middle Volga Region]. Zhigulevskiy st. Nature Reserve named after I.I. Sprygin, Samara. 213 pp.
Kronestedt T (2001) Checklist of Spiders (Araneae) in Sweden [Preliminary version February 2001]
Lavery A (2019) A revised checklist of the spiders of Great Britain and Ireland. Arachnology 18: 196-212
Locket G H, Millidge A F (1953) British spiders. Vol. II. Ray Society, London, 449 pp.
Locket G H, Millidge A F, Merrett P (1974) British Spiders, Volume III. Ray Society, London, 315 pp.
Løvbrekke H (unpubl.)
Martynovchenko F A, Mikhailov K G (2014) Spiders (Aranei) of Teberda State Reserve: fauna and biotopic distribution. Euroasian Entomological Journal 13: 355-371
Oliger T I (2016) [The spider check-list (Araneae) of Nizhne-Svirskii nature reserve (Leningrad region, Russia)]. Lodeinoye Pole. 84 pp.
Otto S (2022) Caucasian spiders. A faunistic database on the spiders of the Caucasus Ecoregion. Database version 02.2022. Internet: caucasus-spiders.info.
Polchaninova N, Prokopenko E (2019) An updated checklist of spiders (Arachnida: Araneae) of Left-Bank Ukraine. Arachnologische Mitteilungen 57: 60-64 & App
Ponomarev A V (2022) Spiders (Arachnida: Araneae) of the southeast of the Russian Plain: catalogue, the fauna specific features. SSC RAS Publishers, Rostov-on-Don, 640 pp.
Roberts M J (1987) The spiders of Great Britain and Ireland. Volume 2: Linyphiidae and checklist. Harley Books Colchester, England, 204 pp.
Rozwałka R, Stanska M (2008) Check-list of spiders (Araneae) of Poland. 1. December 2008. online at http://www.arachnologia.edu.pl/en/species/8-spiders-of-poland.html
Scharff N, Gudik-Sørensen O (2006) Katalog over Danmarks edderkopper (Araneae). Catalogue of the spiders of Denmark (Araneae). Entomologiske Meddelelser 74: 3-71
Seyfulina R R (2019) On linyphiid spiders (Aranei: Linyphiidae) from Moscow Area, Russia. Arthropoda Selecta 28: 453-458
Tanasevitch A V (2011b) On synonymy of linyphiid spiders of the Russian fauna (Arachnida: Aranei: Linyphiidae). 2. Arthropoda Selecta 20: 129-143
Vilbaste A (1987) Eesti Ämblikud (Aranei). Annoteeritud nimestik. Estonian spiders (Aranei). An annotated check list. Valgus, Tallinn. 113 pp. & 512 maps on 67 unpag. pages
Weiss I, Petrișor A (1999) List of the spiders (Arachnida: Araneae) from Romania. Travaux du Muséum National d’Histoire Naturelle “Grigore Antipa” 41: 79-107
WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (13.2.2026) doi: 10.24436/2