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#4944 · 🪼 jellyfish, starfish, worms & co

Donkere landplatworm

Microplana terrestris

🪼 Jellyfish, starfish, worms & co 📍 in the Netherlands
Donkere landplatworm, photo 1 of 10
1/10 © Rand Workman · CC BY-SA 4.0

what is it?

Microplana terrestris is a species of free-living, terrestrial flatworm in the order Tricladida. It was first described in 1773 by the Danish naturalist Otto Friedrich Müller as Fasciola terrestris , but has since been reassigned to the genus Microplana .

base stats

  • NL sightings 6iNaturalist, research grade
  • worldwide 452iNaturalist 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 6 times in the Netherlands on iNaturalist.
  • 452 observations worldwide on iNaturalist.
  • Scientifically named by Otto Friedrich Müller in 1773 (253 years ago).

fact sheet

Nederlands
Donkere landplatworm
scientific name
Microplana terrestris
order
Tricladida
family
Geoplanidae
sightings in NL
6
sightings in Europe
51
sightings worldwide
452
GBIF records in NL
192
weight
—
length
—
lifespan
—
named
1773 by Otto Friedrich Müller

relatives· Geoplanidae

Sources: iNaturalist taxon 484653, Wikidata Q2228765, GBIF 4416151, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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