Sitona

Sitona is a large genus of weevils in the family Curculionidae native to the Nearctic and Palaearctic regions. Over 100 species have been described. Sitona is easily distinguished from related genera by flat, recumbent scales on the mandibles, by the absence of an oval scar on the mandibles, by short and broad rostrum with a deep, longitudinal, median groove, and by dense scales on the body.

Sitona

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
SitoniniPBDB
Motility
actively mobilePBDB, for Arthropoda
Environment
terrestrialPBDB, for Insecta

Time the record covers

At least 27 million years on record.

The record covers at least 27.3 Mya to 129 ka. No occurrence read is dated outside 33.9 Mya to 11.7 ka.

Eocene — about 0 of 27 occurrencesOligocene — about 1 of 27 occurrencesOligoceneMiocene — about 0 of 27 occurrencesPliocene — about 0 of 27 occurrencesPleistocene — about 26 of 27 occurrences35–33 Mya — about 0.1 occurrences33–32 Mya — about 0.2 occurrences32–31 Mya — about 0.2 occurrences31–30 Mya — about 0.2 occurrences30–29 Mya — about 0.2 occurrences29–28 Mya — about 0.2 occurrences28–27 Mya — about 0.1 occurrences3.5–2.3 Mya — about 0.7 occurrences2.3–1.2 Mya — about 1 occurrence1.2–0 Mya — about 24 occurrences27.3 Mya129 ka34.6 Mya0 Mya

27 occurrences of Sitona 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

27 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

5 formations

Highbury Silts and Sands — 51.56°N, 0.06°WOlympia beds — 47.66°N, 122.43°WSalt — 47.69°N, 7.53°EKap København — 82.45°N, 24.10°WKeremesit — 69.50°N, 158.50°E

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The named rock units Sitona has been recovered from, largest first. Drawn where the rock is now, not where it formed. 19 occurrences have no formation on record, which is common for older literature.

Sitona and its relatives

Pleistocene

Where Sitona and its relatives were recorded in the Pleistocene.

Found in the same rock

966 taxa

The Paleobiology Database records 24 sites for Sitona, 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

11 references

Each of the 27 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. 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 Sitona

Credit
James K. Lindsey
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Sitona was found in Sketchfab.

Smithsonian Open Access and MorphoSource were not reached for this taxon, so this list is what the others held rather than everything there is.

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 itSitonini through timeFormations of the PleistoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Germar 1817