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Sphaerius
Sphaerius is a genus of beetles in the family Sphaeriusidae, comprising 18 extant species. It is one of the two extant genera in the family, the other being Bezesporum. They are typically found along the edges of streams and rivers, where they feed on algae; they occur on all continents except Antarctica. Three species occur in the United States.
The overall form of the beetle is convex, glossy, dark brown or black with some markings possible. The head is prominent, with relatively large eyes set far apart, and capitate antennae. Total length ranges from 0.5–1.2 mm (0.020–0.047 in).
3 branches of this genus, most-observed first
Sphaerius acaroides
speciesSphaerius acaroides
Sphaerius politus
speciesSphaerius politus
Sphaerius africanus
speciesSphaerius africanus
Where it lives
Recorded sightings
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geo-referenced records in GBIF, from museums, herbaria and field observers.
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In the stacks
Searching the stacks…
Every page naming Sphaerius 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 322192.