Dasyhelea

Dasyhelea is a genus of biting midges and the only genus of its subfamily, the Dasyheleinae. Larvae of species in this genus are characterized by an anal segment with retractile posterior prolegs. Larvae are aquatic and adults do not feed on vertebrate blood, nor do they prey on other insects. They take nectar only, an unusual feeding behavior within the Ceratopogonidae.

Dasyhelea

Slimguy · CC BY 4.0 · 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
DasyheleiniPBDB
Motility
actively mobilePBDB, for Arthropoda
Environment
terrestrialPBDB, for Insecta

Time the record covers

At least 29 million years on record.

The record covers at least 48.07 Mya to 18.5 Mya. No occurrence read is dated outside 56 Mya to 13.82 Mya.

Paleocene — about 0 of 102 occurrencesEocene — about 14 of 102 occurrencesEoceneOligocene — about 0 of 102 occurrencesMiocene — about 88 of 102 occurrencesMiocene57–55 Mya — about 0.1 occurrences55–54 Mya — about 0.2 occurrences54–52 Mya — about 0.2 occurrences52–51 Mya — about 0.2 occurrences51–50 Mya — about 0.2 occurrences50–48 Mya — about 0.2 occurrences38–36 Mya — about 5 occurrences36–35 Mya — about 5 occurrences35–33 Mya — about 3 occurrences23–22 Mya — about 1 occurrence22–20 Mya — about 1 occurrence20–19 Mya — about 3 occurrences19–17 Mya — about 41 occurrences17–16 Mya — about 39 occurrences16–14 Mya — about 2 occurrences14–13 Mya — about 0.7 occurrences48.07 Mya18.5 Mya56.8 Mya13 Mya

102 occurrences of Dasyhelea on record, most of them in the Miocene. The Paleobiology Database records this as a living group, and the chart stops with its fossils rather than at the present. 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

102 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

4 formations

Barstow — 34.95°N, 116.83°WBarstow — 34.94°N, 116.83°WDunstan — 45.48°S, 169.31°EBouldnor — 50.74°N, 1.36°WArgiles d'lignite du Soissonnais — 49.33°N, 2.66°E

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The named rock units Dasyhelea has been recovered from, largest first. Drawn where the rock is now, not where it formed. 26 occurrences have no formation on record, which is common for older literature.

Dasyhelea and its relatives

Miocene

Where Dasyhelea and its relatives were recorded in the Miocene.

Found in the same rock

2,248 taxa

The Paleobiology Database records 56 sites for Dasyhelea, 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 102 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 Dasyhelea

Credit
Slimguy
Licence
CC BY 4.0
Commercial use
the licence allows it

No 3D scan of Dasyhelea was found in MorphoSource and Sketchfab.

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

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 itDasyheleini through timeFormations of the MioceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Kieffer 1913