araneae - Walckenaeria clavicornis

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Walckenaeria clavicornis (Emerton, 1882)

WSC LSID urn:lsid:nmbe.ch:spidersp:013256

Description

Male

Tibial apophysis with 2 crossing processes.
Prosoma orange-brown to dark brown with blackish pattern. Legs brown, to orange-brown. Opisthosoma grey-black.

Body length male: 2.0-2.5 mm

Female

Epigyne with 2 tongue-shaped plates, reaching far beyond epigastric furrow.

Body length female: 2.0-2.7 mm

Additional information

In soil crevices with high humidity

Character states from linyphiid key

Distribution

Presence

Not established

No data

Global distribution (WSC 2026): North America, Europe, Russia (Europe to Far East), China, Mongolia, Japan

Phenology



Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec

Figures

Pedipalp, ventral view
(Heimer & Nentwig 1991)

Pedipalp
(Roberts 1987)

Pedipalp
(Locket & Millidge 1953)

Pedipalp, retrolateral view
(Løvbrekke unpubl.)

Palpal tibia
(Locket et al. 1974)

Palpal tibia, dorsal view
(Løvbrekke unpubl.)

Tibial apophysis
(Heimer & Nentwig 1991)

Tibial apophysis
(Locket & Millidge 1953)

Prosoma, lateral view
(Roberts 1987)

Prosoma, lateral view
(Løvbrekke unpubl.)

Eyes, frontal view
(Locket & Millidge 1953)

Cephalic area
(Locket & Millidge 1953)

Epigyne
(Heimer & Nentwig 1991)

Epigyne
(Roberts 1987)

Epigyne
(Locket & Millidge 1953)

Epigyne
(Løvbrekke unpubl.)

Epigyne
(Aadland unpubl.)

Epigyne
(Løvbrekke unpubl.)

Vulva
(Heimer & Nentwig 1991)

Vulva
(Løvbrekke unpubl.)

Vulva, dorsal view
(Aadland 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.

Austria (Thaler, 1999b) ||| Faroe Islands (Lissner et al., 2016b) ||| Finland (Koponen et al., 2016) ||| France Removed (Danflous et al., 2020b) ||| Iceland (Agnarsson, 1996) ||| Ireland (Lavery, 2019) ||| Italy (Isaia et al., 2025) ||| Liechtenstein (Arnold, 2001) ||| Netherlands (Heuts & van Helsdingen, 2009) ||| Northern Ireland (Lavery, 2019) ||| Norway (Aakra & Hauge, 2003) ||| Russia, Northern (no references) ||| Russia, Novaya Zemlya (Tanasevitch, 2018) ||| Svalbard (Dahl et al., 2018) ||| Sweden (Kronestedt, 2001) ||| Switzerland (Maurer & Hänggi, 1990) ||| United Kingdom (Lavery, 2019) |||

References

Aadland B (unpubl.) .

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

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

Arnold K (2001) Beitrag zur Spinnenfauna (Arachnida, Araneae) des Fürstentums Liechtenstein. Berichte der Botanisch-Zoologischen Gesellschaft Liechtenstein-Sargans-Werdenberg 28: 211-244

Dahl M T, Yoccoz N G, Aakra K, Coulson S J (2018) The Araneae of Svalbard: the relationships between specific environmental factors and spider assemblages in the High Arctic. Polar Biology 41: 839-853

Danflous S, Déjean S, Guerbaa K, Jacquet C, Lecigne S, Montagne D, Montardi Y, Villepoux O (2020b) De araneis Galliae IV. Actualisation du référentiel des araignées de France – première note. Espèces absentes de France ou mises en nomen dubium. Bulletin de l'Association Française d'Arachnologie 5: 10-32

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

Heuts B, Helsdingen P J van (2009) First record of Walckenaeria clavicornis (Araneae, Linyphiidae) in the Netherlands. Nieuwsbrief SPINED 27: 27-28

Isaia M, Tolve M, Pantini P (2025) Araneae.it: 2.0: the new updated version of the digital catalog of the Italian spiders and other arachnids (Arachnida: Araneae, Opiliones, Scorpiones, Pseudoscorpiones, Palpigradi, Solifugae). Fragmenta Entomologica 57: 197-204

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

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

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

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.)

Maurer R, Hänggi A (1990) Katalog der schweizerischen Spinnen. Documenta Faunistica Helvetiae 12

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

Tanasevitch A V (2018) New data on spiders (Aranei) from the Novaya Zemlya Archipelago and Siberian Arctic, Russia. Arthropoda Selecta 27: 69-71

Thaler K (1999b) Beiträge zur Spinnenfauna von Nordtirol - 6. Linyphiidae 2: Erigoninae (sensu Wiehle) (Arachnida: Araneida). Veröffentlichungen des Tiroler Landesmuseums Ferdinandeum 79: 215-264

WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (13.2.2026) doi: 10.24436/2

Updates

15-03-2026	Image insert
22-10-2025	Distribution update	Detail
17-11-2022	Image insert
05-10-2020	Distribution insert	Detail
24-05-2020	Distribution update	Detail
05-05-2020	Distribution update	Detail
25-03-2018	Distribution update	Detail
15-12-2017	Image insert
16-10-2013	Distribution update	Detail