Psyllipsocus
Psyllipsocus is a genus of cave barklice in the family Psyllipsocidae. There are more than 50 described species in Psyllipsocus.

via iDigBio · via iDigBio. 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
- PsyllipsocidaePBDB
- Motility
- actively mobilePBDB, for Arthropoda
- Environment
- terrestrialPBDB, for Insecta
Time the record covers
At least 70 million years on record.
The record covers at least 93.9 Mya to 23.04 Mya. No occurrence read is dated outside 100.5 Mya to 15.98 Mya.
12 occurrences of Psyllipsocus on record, most of them in the Late Cretaceous. 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
12 occurrences- Late Cretaceous67%
- Eocene17%
- Miocene17%
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
3 formations
- Argiles d'lignite du Soissonnais Formation1
- Kheta Formation1
- Mazantic Shale Formation · Simojovel Group1
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The named rock units Psyllipsocus has been recovered from, largest first. Drawn where the rock is now, not where it formed. 9 occurrences have no formation on record, which is common for older literature.
Psyllipsocus and its relatives
Late CretaceousWhere Psyllipsocus and its relatives were recorded in the Late Cretaceous.
Found in the same rock
1,257 taxa- Burmotachinymphes bilobata2 sites
- Ceratomyrmex ellenbergeri2 sites
- Cretanallachius magnificus2 sites
- Culicoides2 sites
- Longiantennum fashengi2 sites
- Megacoxa janzeni2 sites
- Metopina2 sites
- Nuddsia simplex2 sites
- Oligopsychopsis groehni2 sites
- Palaeoparasycorax globosus2 sites
- Protokateretes antiquus2 sites
- Psocodea2 sites
- Ablabesmyia (Karelia) eocenica1 site
- Abraracourcix curvivenatus1 site
- Acalyptomerus thayerae1 site
- Acalyptopygus astriatus1 site
- Acalyptopygus brevicornis1 site
- Acalyptopygus elongatus1 site
- Acalyptopygus lingziae1 site
- Acanthochrysa langae1 site
- Acanthocorona1 site
- Acanthocorona skalskii1 site
- Acanthocorona spinifera1 site
- Acanthocorona wichardi1 site
The Paleobiology Database records 11 sites for Psyllipsocus, 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
9 references- The first detailed morphological treatment of a Cretaceous psocid and the character evolution of Trogiomorpha (Insecta: Psocodea)3
- New psocids (Psocodea: Prionoglarididae, Psyllipsocidae) from Cretaceous Burmese amber deposits2
- A new species of Psyllipsocus (Psocodea: Trogiomorpha: Psyllipsocidae) from the mid-Cretaceous amber of Myanmar1
- The oldest representative of the extant barklice genus Psyllipsocus (Psocodea: Trogiomorpha: Psyllipsocidae) from the Cenomanian amber of Myanmar1
- New Chinese psocids from Eocene Fushun amber (Insecta: Psocodea)1
- Systematic, palaeoecology, and palaeobiogeography of the insect fauna from Mexican amber1
- New Psocoptera (Insecta) from the lowermost Eocene Amber of Oise, France1
- Psocoptera in Late Cretaceous insect-bearing resins from the Taimyr1
- Fossil insects of the Order Psocoptera from Tertiary amber of Chiapas, Mexico1
Each of the 12 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 Psyllipsocus
- Source
- iDigBio
- Credit
- via iDigBio
- Licence
- not stated by the source
- Commercial use
- cannot be read from the licence given — check the record
No 3D scan of Psyllipsocus 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 itPsyllipsocidae through timeFormations of the Late CretaceousThe world it lived on
Occurrence data from the Paleobiology Database, CC BY 4.0. Selys-Longchamps 1872