skip to content

#4303 · 🕷️ spiders & kin

Snake-back Spider

🇳🇱 Boomzesoog ·Segestria senoculata

🕷️ Spiders & kin 📍 in the Netherlands
Snake-back Spider, photo 1 of 10
1/10 © Marie Lou Legrand · CC BY-NC 4.0

what is it?

Segestria senoculata , sometimes known as the snake-back spider , is a species of spider belonging to the family Segestriidae. It has a Palearctic distribution.

base stats

  • NL sightings 13iNaturalist, research grade
  • worldwide 1,561iNaturalist 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 13 times in the Netherlands on iNaturalist.
  • 1,561 observations worldwide on iNaturalist.
  • Scientifically named in 1758 (268 years ago).

fact sheet

English
Snake-back Spider
Nederlands
Boomzesoog
scientific name
Segestria senoculata
class
Arachnida
order
Araneae
family
Segestriidae
sightings in NL
13
sightings in Europe
917
sightings worldwide
1,561
GBIF records in NL
459
weight
—
length
—
lifespan
—
named
1758

relatives· Segestriidae

Sources: iNaturalist taxon 318909, Wikidata Q1150738, GBIF 5169959, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

stan runge 9114b54 source