Hydrophilidae

Hydrophilidae, also known colloquially as water scavenger beetles, is a family of beetles. Aquatic hydrophilids are notable for their long maxillary palps, which are longer than their antennae. Several of the former subfamilies of Hydrophilidae have recently been removed and elevated to family rank; Epimetopidae, Georissidae, Helophoridae, Hydrochidae, and Spercheidae. While the majority of hydrophilids are aquatic, around a third of described species are terrestrial, mostly belonging to the subfamily Sphaeridiinae.

Hydrophilidae

Darkone · CC BY-SA 2.5 · 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
Also called
water scavenger beetlePBDB
Sits inside
HydrophiloideaPBDB
Motility
actively mobilePBDB, for Arthropoda
Environment
terrestrialPBDB, for Insecta

Time the record covers

At least 182 million years on record.

The record covers at least 182.9 Mya to 11.7 ka. No occurrence read is dated outside 184.2 Mya to 0 Mya.

Early Jurassic — about 5 of 306 occurrencesMiddle Jurassic — about 1 of 306 occurrencesLate Jurassic — about 9 of 306 occurrencesLate JurassicEarly Cretaceous — about 16 of 306 occurrencesEarly CretaceousLate Cretaceous — about 3 of 306 occurrencesLate CretaceousPaleocene — about 1 of 306 occurrencesEocene — about 44 of 306 occurrencesEoceneOligocene — about 26 of 306 occurrencesMiocene — about 42 of 306 occurrencesMiocenePliocene — about 16 of 306 occurrencesPleistocene — about 142 of 306 occurrences188–182 Mya — about 4 occurrences182–175 Mya — about 0.5 occurrences175–169 Mya — about 0.3 occurrences169–163 Mya — about 1 occurrence163–157 Mya — about 0.4 occurrences157–150 Mya — about 2 occurrences150–144 Mya — about 6 occurrences144–138 Mya — about 2 occurrences138–132 Mya — about 0.3 occurrences132–125 Mya — about 1 occurrence125–119 Mya — about 6 occurrences119–113 Mya — about 7 occurrences113–106 Mya — about 0.5 occurrences106–100 Mya — about 0.6 occurrences100–94 Mya — about 2 occurrences94–88 Mya — about 1 occurrence69–63 Mya — about 0.5 occurrences63–56 Mya — about 0.5 occurrences56–50 Mya — about 3 occurrences50–44 Mya — about 14 occurrences44–38 Mya — about 4 occurrences38–31 Mya — about 26 occurrences31–25 Mya — about 14 occurrences25–19 Mya — about 18 occurrences19–13 Mya — about 13 occurrences13–6.3 Mya — about 20 occurrences6.3–0 Mya — about 160 occurrences182.9 Mya11.7 ka188 Mya0 Mya

306 occurrences of Hydrophilidae 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

306 occurrences

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

53 formations

Highbury Silts and Sands — 51.56°N, 0.06°WUpper Freshwater-Molasse — 47.67°N, 8.93°ETsubusagawa — 33.40°N, 131.35°ERott — 50.75°N, 7.26°ERott — 50.75°N, 7.26°ERott — 50.60°N, 7.25°EFlorissant — 38.92°N, 105.28°WFlorissant — 38.93°N, 105.24°WGreen River — 41.56°N, 109.55°WGreen River — 41.55°N, 109.51°WMessel — 49.93°N, 8.75°EOlympia beds — 47.66°N, 122.43°WTitusville Till — 41.62°N, 79.64°WBouldnor — 50.74°N, 1.36°WYixian — 41.54°N, 118.92°EYixian — 41.62°N, 120.83°EHirabaru — 33.40°N, 131.64°EPosidonia Shale — 52.35°N, 10.74°EPosidonia Shale — 52.36°N, 10.59°EPosidonia Shale — 52.31°N, 10.62°EShanwang — 36.55°N, 118.71°ENiveau du gypse d'Aix — 43.52°N, 5.45°ECampagne-Calavon — 43.85°N, 5.58°EOler — 69.50°N, 158.50°ENogami — 33.21°N, 131.15°EMizozono — 31.98°N, 130.74°EKarabastau — 42.90°N, 70.00°EZaza — 53.30°N, 112.09°EHydrobienkalk — 50.04°N, 8.24°ESharteg — 44.14°N, 95.77°EThermalsinterkalk — 48.41°N, 9.55°E

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The named rock units Hydrophilidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 29 further formations hold fewer occurrences each and are not listed. 84 occurrences have no formation on record, which is common for older literature.

Hydrophilidae and its relatives

Pleistocene

Where Hydrophilidae and its relatives were recorded in the Pleistocene.

Found in the same rock

6,183 taxa

The Paleobiology Database records 145 sites for Hydrophilidae, and this reads all of them. Of that, one read hit the database's own return limit, so every count below is a floor rather than a total. 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

91 references

Each of the 306 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. 79 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 content1

Picture of Hydrophilidae

Credit
Darkone
Licence
CC BY-SA 2.5
Commercial use
the licence allows it

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

The description on this site

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 itHydrophiloidea through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Latreille 1802