#3918 · 🪰 flies & mosquitoes
Slender Striped Robberfly
🇳🇱 Grasjager ·Leptogaster cylindrica
📍 Alkmaar, Nederland
📍 3292 Strijensas, Nederland
📍 Rijswijk
📍 Alkmaar, Nederland
📍 Blokhoeve, Nieuwegein, Nederland
📍 Woudrichem, Nederland
📍 Heerhugowaard, Nederland
10 photos from iNaturalist (Creative Commons) · credits & licences
- 1. © Pentti Ketola · CC BY-NC 4.0
- 2. © Vladimir Bryukhov · CC BY-NC 4.0
- 3. © Vladimir Bryukhov · CC BY-NC 4.0
- 4. Alkmaar, Nederland:© Joost . · CC BY-NC 4.0
- 5. 3292 Strijensas, Nederland:© dgcurrywheel · CC BY-NC 4.0
- 6. Rijswijk:© Michelle · CC BY-NC 4.0
- 7. Alkmaar, Nederland:© Joost . · CC BY-NC 4.0
- 8. Blokhoeve, Nieuwegein, Nederland:© Marleen Schouten · CC BY-NC 4.0
- 9. Woudrichem, Nederland:© Paul G. Schrijvershof · CC BY-NC-ND 4.0
- 10. Heerhugowaard, Nederland:© dr. Werner de Gier · CC BY-NC 4.0
what is it?
Leptogaster cylindrica is a Palearctic species of robber fly in the family Asilidae.
base stats
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 31 times in the Netherlands on iNaturalist.
- 1,304 observations worldwide on iNaturalist.
- Scientifically named by Charles De Geer in 1776 (250 years ago).
fact sheet
- English
- Slender Striped Robberfly
- Nederlands
- Grasjager
- scientific name
- Leptogaster cylindrica
- class
- Insecta
- order
- Diptera
- family
- Asilidae
- sightings in NL
- 31
- sightings in Europe
- 542
- sightings worldwide
- 1,304
- GBIF records in NL
- 2,651
- weight
- —
- length
- —
- lifespan
- —
- named
- 1776 by Charles De Geer
relatives· Asilidae
#3776 📷 10Stripe-legged Robber Fly
🇳🇱 Gewone bladjager
Dioctria hyalipennis
👀 298 in NL
#3779 📷 10Common Awl Robber Fly
🇳🇱 Bosrandroofvlieg
Neoitamus cyanurus
👀 242 in NL
#3800 📷 10Dune Robber Fly
🇳🇱 Zandroofvlieg
Philonicus albiceps
👀 148 in NL
#3804 📷 10kite-tailed robberfly
🇳🇱 Gewone roofvlieg
Tolmerus atricapillus
👀 138 in NL
#3820 📷 10Roodbaardroofvlieg
Eutolmus rufibarbis
👀 99 in NL
#3826 📷 10bumblebee robberfly
🇳🇱 Gele hommelroofvlieg
Laphria flava
👀 90 in NL
#3835 📷 10fan-bristled robberfly
🇳🇱 Borstelroofvlieg
Dysmachus trigonus
👀 85 in NL
#3844 📷 7Hornet Robber Fly
🇳🇱 Hoornaarroofvlieg
Asilus crabroniformis
👀 70 in NL
Sources: iNaturalist taxon 205063, Wikidata Q4042781, GBIF 5091025, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.