Resources:
Linyphiidae  Blackwall, 1859 / Walckenaeria  Blackwall, 1833   63 species

Walckenaeria karpinskii  (O. Pickard-Cambridge, 1873)

Description

Colour, size and most other characters very close to W. clavicornis

Body length male: 2-2.3 mm
Body length female: 2-2.5 mm
Distribution
  Presence
  No data
Distribution comment: Records from UK and the Alps belong to W. clavicornis; Svalbard: removed (Dahl et al. 2018)
Global distribution (WSC 2020): North America, Scandinavia, Lithuania, Russia (Europe to Far East), China, Mongolia
Phenology
JanFebMarAprMayJunJulAugSepOctNovDec
 male  female
Figures
Distribution List
Finland   (Koponen et al., 2016) ||| Lithuania   (no references) ||| Norway   (Aakra & Hauge, 2003) ||| Russia, Central   (no references) ||| Russia, Eastern   (no references) ||| Russia, Northern   (no references) ||| Sweden   (Kronestedt, 2001) |||
References

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

Biteniekyte M, Relys V (2012) The checklist of Lithuanian spiders (Arachnida: Araneae). Biologija 57: 148-158 pdf

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 pdf

Efimik V E, Esyunin S L (1996) A new subgenus and a new species of Walckenaeria Blackwall, 1833, from the Urals with remarks on the distribution of some unicornis-group species in the Palearctic (Aranei Linyphiidae). Arthropoda Selecta 5(1/2): 63-73 pdf

Fjellberg A (unpubl.)

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 pdf

Kronestedt T (2001) Checklist of Spiders (Araneae) in Sweden [Preliminary version February 2001] pdf

Løvbrekke H (unpubl.)

Millidge A F (1983) The erigonine spiders of North America. Part 6. The genus Walckenaeria Blackwall (Araneae, Linyphiidae). Journal of Arachnology 11: 105-200 pdf

Parker J R (1969) On the establishment of Cornicularia clavicornis Emerton (Araneae) as a British species. Bulletin of the British Arachnological Society 1: 49-54 pdf

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 pdf

Updates
24-05-2020 Distribution update Detail
06-01-2020 Image insert
30-09-2015 Distribution update Detail
20-11-2014 Image insert