#4047 · 🦗 bugs, crickets & other insects
yellow barklouse
Valenzuela flavidus
9 photos from iNaturalist (Creative Commons) · credits & licences
what is it?
Valenzuela flavidus is a species of Psocoptera from Caeciliusidae family that can be found in United Kingdom, and sometimes Ireland. They are also common in Austria, Azores, Belgium, Bulgaria, Canary Islands, Croatia, Denmark, Finland, France, Germany, Greece, Hungary, Italy, Latvia, Luxembourg, Norway, Poland, Portugal, Romania, Spain, Sweden, Switzerland, and the Netherlands. It is also widespread in Near East. The species are yellowish-black coloured.
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 64 times in the Netherlands on iNaturalist.
- 4,657 observations worldwide on iNaturalist.
- Scientifically named by James Francis Stephens in 1836 (190 years ago).
fact sheet
- English
- yellow barklouse
- scientific name
- Valenzuela flavidus
- class
- Insecta
- order
- Psocodea
- family
- Caeciliusidae
- sightings in NL
- 64
- sightings in Europe
- 2,310
- sightings worldwide
- 4,657
- GBIF records in NL
- 997
- weight
- —
- length
- —
- lifespan
- —
- named
- 1836 by James Francis Stephens
Sources: iNaturalist taxon 308612, Wikidata Q4052589, GBIF 1031710, Wikipedia (EN), Wikipedia (NL). Intro text from Wikipedia (CC BY-SA 4.0).Updated 2026-10-24.