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Linyphiidae  Blackwall, 1859 / Diastanillus  Simon, 1926   1 species

Diastanillus pecuarius (Simon, 1884)

WSC LSID urn:lsid:nmbe.ch:spidersp:010015

Key to genera | Key to species

Description

Prosoma brownish. Sternum brownish, with grey reticulate pattern and margin. Chelicerae brownish. Legs yellowish. Opisthosoma whitish, sometimes suffused with grey.

Body length male: 1.5 mm
Body length female: 1.5-1.8 mm
Additional information

myrmecophilic in formicaries of Formica fusca and related species. Pyrenees, 1800-2600 m, further locations in Austria in the range of timberline and small bush heathland (2000-2300 m)

Quite widespread in nests of Formica sp. ants at about 700-800 m.a.s.l. in central parts of South Norway, but goes down to sea level in coastal localities in Nordland county, Northern Norway.

Frequency: Widely distributed

Character states from linyphiid key
Distribution
  Presence
  No data
Global distribution (WSC 2026): France, Austria, Norway
Figures
species

male Pedipalp
(Thaler 1969)

species

male Pedipalp
(Thaler 1969)

species

male Pedipalp, retrolateral view
(Løvbrekke unpubl.)

species

male Palpal tibia, dorsal view
(Løvbrekke unpubl.)

species

male Tibial apophysis
(Thaler 1969)

species

male Prosoma, dorsal view
(Thaler 1969)

species

male Prosoma, lateral view
(Thaler 1969)

species

male Prosoma, dorsal view
(Løvbrekke unpubl.)

species

male Prosoma, lateral view
(Løvbrekke unpubl.)

species

female Epigyne, ventral view
(Aakra et al. 2016)

species

female Epigyne, ventral view
(Aakra et al. 2016)

species

female Epigyne, ventral view
(Løvbrekke unpubl.)

species

female Vulva
(Thaler 1969)

species

female Vulva
(Aakra et al. 2016)

species

female Vulva, dorsal view
(Løvbrekke unpubl.)

species

female Vulva, ventral view
(Fjellberg unpubl.)

species

female Vulva, dorsal view
(Fjellberg unpubl.)

species

female Prosoma, lateral view
(Thaler 1969)

species

female Prosoma, dorsal view
(Fjellberg unpubl.)

Distribution List
Austria   (Thaler, 1999b) ||| France   (Le Peru, 2007) ||| Norway   (Aakra et al., 2016) |||
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

Fjellberg A (unpubl.) .

Le Peru B (2007) Catalogue et répartition des araignées de France. Revue Arachnologique 16: 1-468 pdf

Løvbrekke H (unpubl.)

Thaler K (1969) Über einige wenig bekannte Zwergspinnen aus Tirol (Arachn., Araneae, Erigonidae). Berichte des Naturwissenschaftlich-Medizinischen Vereins in Innsbruck 57: 195-219 pdf

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

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

Updates
04-09-2025 Distribution update Detail
23-12-2019 Image insert
11-11-2018 Image insert
24-12-2015 Image insert