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#4287 · 🕷️ spiders & kin

Northern Bear Spider

🇳🇱 Grindwolfspin ·Arctosa cinerea

🕷️ Spiders & kin 📍 in the Netherlands
Northern Bear Spider, photo 1 of 10
1/10 © Manuel Raab · CC BY-NC 4.0

what is it?

Arctosa cinerea is one of the most conspicuous wolf spider of central Europe, with a palearctic distribution and also found in Congo. The spider reaches a length of 17 mm (males only 14 mm), and occurs only on sandy beaches of rivers, lakes and oceans. Its grey-brown color makes for a good camouflage, and so it is not often seen, even if it wanders around during daylight. They dig holes in the ground, which they cover with silk,...

base stats

  • NL sightings 16iNaturalist, research grade
  • worldwide 1,313iNaturalist observations

Bars compare against all animals on log scales: up to 300,000 Dutch and 600,000 worldwide sightings (the most-seen species), 150 t (blue whale), 30 m and 400 years (Greenland shark).

fun facts

  • Spotted 16 times in the Netherlands on iNaturalist.
  • 1,313 observations worldwide on iNaturalist.
  • Scientifically named by Johan Christian Fabricius in 1777 (249 years ago).

fact sheet

English
Northern Bear Spider
Nederlands
Grindwolfspin
scientific name
Arctosa cinerea
class
Arachnida
order
Araneae
family
Lycosidae
sightings in NL
16
sightings in Europe
765
sightings worldwide
1,313
GBIF records in NL
0
weight
—
length
—
lifespan
—
named
1777 by Johan Christian Fabricius

relatives· Lycosidae

Sources: iNaturalist taxon 468087, Wikidata Q1434389, GBIF 2147210, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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