Linyphiidae  Blackwall, 1859 / Estrandia  Blauvelt, 1936   1 species

Estrandia grandaeva (Keyserling, 1886)

Description
Male

Prosoma light chestnut-brown, elongated, egg-shaped, fovea V-shaped. Reticulation medially very fine and dense, laterally more roughly and obliquely. Chelicerae with 3 pro- and 2 retrolateral teeth. Sternum finely reticulated. Legs muddy yellow. Prosoma length: 1.4 mm, prosoma width: 1.1 mm.

Body length male: 2.5 mm
Female

As in male. Pars cephalica less elevated, prosoma and legs lighter. Epigyne: Almost semicircular, dark median field separates two large, anteriad widely opened, posteriorly hooded grooves. Prosoma length: 1.3 mm, prosoma width: 0.9 mm.

Body length female: 2.4-2.8 mm
Distribution
  Presence
  Not established
  No data
Distribution comment: Germany: the records, mentioned by van Helsdingen & Miller (2025), at naturgucker.de cannot be found any more be (not yet corrected by GBIF)
Global distribution (WSC 2026): North America, Northern Europe, Russia (Europe to Far East), China, Japan
Figures
Distribution List
Finland   (Koponen et al., 2016) ||| Germany  Removed (van Helsdingen & Miller, 2025) ||| Netherlands   (van Helsdingen & Miller, 2025) ||| Norway   (Aakra et al., 2016; Farlund, 2019) ||| Russia, Eastern   (Esyunin & Efimik, 1996a) ||| Russia, Northern   (Esyunin & Efimik, 1996a) ||| Sweden   (Kronestedt, 2001) |||
References

Aakra K, Morka G H, Antonson A, Farlund M, Wrånes R E, Frølandshagen R, Løvbrekke H, Furuseth P, Fjellberg A, Lemke M, Pfliegler W P, Andersen S, Olsen K M, Aadland B, Berggren K (2016) Spiders new to Norway (Arachnida, Araneae) with ecological, taxonomical and faunistic comments. Norwegian Journal of Entomology 63: 6-43 pdf

Esyunin S L, Efimik V E (1996a) Catalogue of the spiders (Arachnida, Aranei) of the Urals. KMK Scientific Press, Moscow, 228 pp. pdf

Farlund M (2019) Norwegian Spiders - Norske edderkopper. Siste oppdatering for funn av nye arter 10. oktober, 2019. Online at http://crocea.wordpress.com/norsk-artsliste/ pdf

Fjellberg A (unpubl.) .

Helsdingen P J van, Miller J A (2025) Estrandia grandaeva (Keyserling, 1886), first record in the Netherlands (Araneae, Linyphiidae). Nieuwsbrief SPINED 43: 19-20 pdf

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 (1984b) The taxonomy of the Linyphiidae, based chiefly on the epigynal and tracheal characters (Araneae: Linyphiidae). Bulletin of the British Arachnological Society 6: 229-267 pdf

Morka G H (unpubl.)

Paquin P, Dupérré N (2003) Guide d'identification des araignées de Québec. Fabreries, Supplément 11: 1-251 pdf

WSC (2026) World Spider Catalog. Version 27. Natural History Museum Bern, online at http://wsc.nmbe.ch (20.5.2026) doi: 10.24436/2 pdf

Updates
05-06-2025 Datasheet update Detail
05-06-2025 Distribution insert Detail
26-05-2025 Distribution update Detail
30-04-2025 Image insert
30-04-2025 Distribution insert Detail
30-04-2025 Distribution update Detail
22-10-2022 Gallery image insert
20-09-2022 Image insert
31-12-2019 Image insert
02-10-2018 Image insert
14-01-2017 Image insert
13-06-2016 Datasheet update Detail
26-02-2014 Distribution update Detail