Hydroporus
Hydroporus is a genus of water beetles native to the Palearctic, the Nearctic, the Near East, and North Africa. It contains the following species:

James K. Lindsey · CC BY-SA 3.0 · via Wikipedia/Commons. May be a photograph of a specimen, or an artist’s reconstruction — an interpretation of a skeleton, since colour and soft tissue are almost never preserved.
On record
Recorded, not inferred- Sits inside
- HydroporiniPBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
Time the record covers
At least 33 million years on record.
The record covers at least 33.9 Mya to 129 ka. No occurrence read is dated outside 37.71 Mya to 11.7 ka.
47 occurrences of Hydroporus on record, most of them in the Pleistocene. The Paleobiology Database records this as a living group. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.
When
47 occurrences- Eocene2%
- Oligocene6%
- Miocene6%
- Pleistocene85%
These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.
Found in
10 formations
- Kap København Formation12
- Scarborough Formation4
- Rott Formation2
- Titusville Till Formation2
- Keremesit Formation2
- Campagne-Calavon Formation1
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The named rock units Hydroporus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 20 occurrences have no formation on record, which is common for older literature.
Hydroporus and its relatives
PleistoceneWhere Hydroporus and its relatives were recorded in the Pleistocene.
Found in the same rock
1,676 taxa- Pterostichus (Cryobius)13 sites
- Bembidion12 sites
- Stenus10 sites
- Agabus9 sites
- Aphodius8 sites
- Carabidae8 sites
- Phyllobius8 sites
- Bledius7 sites
- Chrysolina7 sites
- Grypus equiseti7 sites
- Aleocharinae6 sites
- Amara6 sites
- Curtonotus alpinus6 sites
- Dyschirius6 sites
- Dytiscidae6 sites
- Eucnecosum6 sites
- Ilybius6 sites
- Morychus viridis6 sites
- Notaris acridulus6 sites
- Notiophilus aquaticus6 sites
- Olophrum consimile6 sites
- Tachinus6 sites
- Tournotaris bimaculatus6 sites
- Aegialia (Psammoporus) terminalis5 sites
The Paleobiology Database records 30 sites for Hydroporus, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.
This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.
Entered from
14 references- Palaeoentomology of the Kap København Formation, a Plio-Pleistocene sequence in Peary Land, North Greenland12
- Late Cenozoic insects of northern Eurasia8
- Pleistoceńskie owady z Borysławia8
- A Late Pleistocene fauna and flora from Upton Warren, Worcestershire4
- Canadian fossil insects, 4. Additions to the coleopterous fauna of the interglacial clays of the Toronto district4
- Fossil Beetle Evidence for a Short Warm Interval near 40,000 yr B.P. at Titusville, Pennsylvania2
- Geradflügler und Wasserkäfer der oligocänen Ablagerungen von Rott2
- Hydroporus carstengroehni sp. n. und zwei unbestimmte Hydroporinae aus dem baltischen Bernstein (Dytiscidae: Hydroporinae)1
- Marine Isotope Stage 9 environments of fluvial deposits at Hackney, north London, UK1
- Late Devensian river deposits beneath the floodplain terrace of the River Thames at Abingdon, Berkshire, England1
- Neue fossile Schwimmkäfer aus dem Tertiär Europas und Westsibiriens (Coleoptera: Dytiscidae)1
- An unusual occurrence of the Dytiscidae (Coleoptera) in the siliceous flowstone of the Upper Miocene cave at Przeworno, Lower Silesia, Poland1
Each of the 47 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. 2 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.
Media and terms
Media content2
Picture of Hydroporus
- Source
- Wikipedia/Commons
- Credit
- James K. Lindsey
- Licence
- CC BY-SA 3.0
- Commercial use
- the licence allows it
Photogrammetry
- Source
- MorphoSource
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
- Specimen
- Hydroporus Hydroporus foveolatus · ETHZ:ENT:0576199
Smithsonian Open Access was not reached for this taxon, so this list is what the others held rather than everything there is.
The description on this site
- Source
- Wikipedia, “Hydroporus”
- Licence
- CC BY-SA 4.0
This is what the site found, which is not the same as what exists.
Keep going
What may have been alongside itHydroporini through timeFormations of the PleistoceneThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Clairville 1806