Segestriidae

Tube-dwelling spiders (Segestriidae) are a family of araneomorph spiders first described by Eugène Simon in 1893. It consists of five genera: two large and widespread, Segestria and Ariadna, and three smaller genera, Citharoceps, Gippsicola and Indoseges. They are haplogyne spiders, related to the Dysderidae and placed in clade or superfamily Dysderoidea.

Segestriidae

Luis Miguel Bugallo Sánchez ( Lmbuga Commons )( Lmbuga Galipedia ) · 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
Also called
tube-dwelling spiderPBDB
Sits inside
DysderoideaPBDB
Life habit
solitaryPBDB, for Arachnida
Motility
actively mobilePBDB, for Arachnida
Environment
terrestrialPBDB, for Arachnida

Time the record covers

At least 93 million years on record.

The record covers at least 93.9 Mya to 11.7 ka. No occurrence read is dated outside 100.5 Mya to 0 Mya.

Early Cretaceous — about 0 of 46 occurrencesLate Cretaceous — about 6 of 46 occurrencesLate CretaceousPaleocene — about 0 of 46 occurrencesEocene — about 35 of 46 occurrencesEoceneOligocene — about 0 of 46 occurrencesMiocene — about 2 of 46 occurrencesMiocenePliocene — about 1 of 46 occurrencesPleistocene — about 0 of 46 occurrences103–99 Mya — about 0.9 occurrences99–96 Mya — about 2 occurrences96–92 Mya — about 1 occurrence92–89 Mya — about 0.6 occurrences89–85 Mya — about 0.1 occurrences85–82 Mya — about 0.9 occurrences41–38 Mya — about 1 occurrence38–34 Mya — about 31 occurrences34–31 Mya — about 3 occurrences21–17 Mya — about 1 occurrence17–14 Mya — about 1.0 occurrences6.8–3.4 Mya — about 0.4 occurrences3.4–0 Mya — about 3 occurrences93.9 Mya11.7 ka103 Mya0 Mya

46 occurrences of Segestriidae on record, most of them in the Eocene. 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

46 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

Florissant — 38.92°N, 105.28°WDolgan — 70.17°N, 86.82°EKheta — 72.03°N, 101.33°ERaritan — 40.47°N, 74.32°WBouldnor — 50.74°N, 1.36°W

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The named rock units Segestriidae has been recovered from, largest first. Drawn where the rock is now, not where it formed. 39 occurrences have no formation on record, which is common for older literature.

Segestriidae and its relatives

Eocene

Where Segestriidae and its relatives were recorded in the Eocene.

Found in the same rock

3,206 taxa

The Paleobiology Database records 25 sites for Segestriidae, 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

19 references

Each of the 46 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. 7 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 Segestriidae

Credit
Luis Miguel Bugallo Sánchez ( Lmbuga Commons )( Lmbuga Galipedia )
Licence
CC BY-SA 3.0
Commercial use
the licence allows it

No 3D scan of Segestriidae 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 itDysderoidea through timeFormations of the EoceneThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. (Simon 1893)