- Animals
- ›Arthropods
- ›Hexapods
- ›Insects
- ›Winged and Once-winged Insects
- ›Beetles
- ›Water, Rove, Scarab, Long-horned, Leaf, and Snout Beetles
- ›Elateriform Beetles
- ›Pill, Water and Toe-winged Beetles
- ›Riffle Beetles
- ›Elminae
- ›Elmini

Riolus
Riolus is a genus of beetles belonging to the family Elmidae.
10 branches of this genus, most-observed first

Riolus subviolaceus
speciesRiolus subviolaceus

Riolus somcheticus
speciesRiolus somcheticus

Riolus nitens
speciesRiolus nitens

Riolus cupreus
speciesRiolus cupreus
Riolus fontinalis
speciesRiolus fontinalis
Riolus illiesi
speciesRiolus illiesi
Riolus syriacus
speciesRiolus syriacus
Riolus brunneus
speciesRiolus brunneus
Riolus argolicus
speciesRiolus argolicus
Riolus sodalis
speciesRiolus sodalis
Where it lives
Recorded sightings
—
geo-referenced records in GBIF, from museums, herbaria and field observers.
Drag the globe to turn it. Dots are where records exist, not a range map; darker means more records.
In the old herbals & bestiaries
In the stacks
Searching the stacks…
Every page naming Riolus in the Biodiversity Heritage Library →
This page is assembled live from iNaturalist, GBIF, Wikipedia, the Source Library and the Internet Archive. It is not yet part of the hand-edited codex. iNaturalist taxon 1013382.

