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#4359 · 🕷️ spiders & kin

Brown Widow

🇳🇱 Bruine weduwe ·Latrodectus geometricus

🕷️ Spiders & kin 📍 in Europe, not in NL
Brown Widow, photo 1 of 10
1/10 © Wayne Fidler · CC BY-NC 4.0

what is it?

Latrodectus geometricus , commonly known as the brown widow , brown button spider , grey widow , brown black widow , house button spider or geometric button spider , is one of the widow spiders in the genus Latrodectus . As such, it is a 'cousin' to the more infamous Latrodectus mactans (black widow).

base stats

  • NL sightings 0iNaturalist, research grade
  • worldwide 32,544iNaturalist 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

  • No confirmed wild sightings in the Netherlands on iNaturalist: you'd have to travel for this one.
  • 32,544 observations worldwide on iNaturalist.
  • Scientifically named by Carl Ludwig Koch in 1841 (185 years ago).

fact sheet

English
Brown Widow
Nederlands
Bruine weduwe
scientific name
Latrodectus geometricus
class
Arachnida
order
Araneae
family
Theridiidae
sightings in NL
0
sightings in Europe
2
sightings worldwide
32,544
GBIF records in NL
3
weight
—
length
—
lifespan
—
named
1841 by Carl Ludwig Koch

relatives· Theridiidae

Sources: iNaturalist taxon 47383, Wikidata Q82243, GBIF 2157944, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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