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#4054 · 🦗 bugs, crickets & other insects

Elm Seed Bug

🇳🇱 Iepenridderwants ·Arocatus melanocephalus

🦗 Bugs, crickets & other insects 📍 in the Netherlands (introduced)
Elm Seed Bug, photo 1 of 10
1/10 © Alexis Tinker-Tsavalas · CC BY 4.0

what is it?

Arocatus melanocephalus , the elm seed bug , is a true bug in the family Lygaeidae. The species was initially described by Johan Christian Fabricius in 1798, and Maximilian Spinola designated it to be the type species of the genus Arocatus in 1837. This bug is native to Europe but has been introduced to North America.

base stats

  • NL sightings 60iNaturalist, research grade
  • worldwide 3,817iNaturalist 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 60 times in the Netherlands on iNaturalist.
  • 3,817 observations worldwide on iNaturalist.
  • Scientifically named by Johan Christian Fabricius in 1798 (228 years ago).
  • Not originally Dutch: it was introduced to the Netherlands.

fact sheet

English
Elm Seed Bug
Nederlands
Iepenridderwants
scientific name
Arocatus melanocephalus
class
Insecta
order
Hemiptera
family
Lygaeidae
in NL
introduced
sightings in NL
60
sightings in Europe
1,216
sightings worldwide
3,817
GBIF records in NL
2,277
weight
—
length
—
lifespan
—
named
1798 by Johan Christian Fabricius

relatives· Lygaeidae

Sources: iNaturalist taxon 505749, Wikidata Q16525387, GBIF 4486295, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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