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#3783 · 🪰 flies & mosquitoes

Ladder-backed Hover Fly

🇳🇱 Slanke Driehoekzweefvlieg ·Melanostoma scalare

🪰 Flies & mosquitoes 📍 in the Netherlands
Ladder-backed Hover Fly, photo 1 of 10
1/10 © Gábor Keresztes · CC BY-NC 4.0

what is it?

Melanostoma scalare , is a very common species of hoverfly. It is found in most of the Palearctic and in eastern parts of the Afrotropical realm south to Zimbabwe and throughout the Indomalayan realm to New Guinea. Little is known of its biology, However it is suspected to be general predator of small insects in leaf litter.

base stats

  • NL sightings 231iNaturalist, research grade
  • worldwide 8,096iNaturalist 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 231 times in the Netherlands on iNaturalist: the #32 most seen of the flies & mosquitoes in NL.
  • 8,096 observations worldwide on iNaturalist.
  • Scientifically named by Johan Christian Fabricius in 1794 (232 years ago).

fact sheet

English
Ladder-backed Hover Fly
Nederlands
Slanke Driehoekzweefvlieg
scientific name
Melanostoma scalare
class
Insecta
order
Diptera
family
Syrphidae
sightings in NL
231
sightings in Europe
6,403
sightings worldwide
8,096
GBIF records in NL
18,601
weight
—
length
—
lifespan
—
named
1794 by Johan Christian Fabricius

relatives· Syrphidae

Sources: iNaturalist taxon 70405, Wikidata Q1765048, GBIF 5766556, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.

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