Perforatus perforatus (Bruguière, 1789)
(an acorn barnacle)

Taxonomic hierarchy:
SpeciesPerforatus perforatus (an acorn barnacle)
FamilyBALANIDAE (a family of acorn barnacles)
SuperfamilyBALANOIDEA (a superfamily of crustaceans)
SuborderBALANOMORPHA (a suborder of acorn barnacles)
OrderSESSILIA (acorn barnacles)
SubclassTHECOSTRACA (barnacles)
ClassMAXILLOPODA (CLASS) (a class of crustaceans)
SubphylumCRUSTACEA (crustaceans)
PhylumARTHROPODA (arthropods)
SuperphylumECDYSOZOA (skin shedders)
CladeBilateria (bilaterally symmetrical animals)
SubkingdomEUMETAZOA (metazoans)
KingdomANIMALIA (animals)
DomainEukaryota (eukaryotes)
LifeBIOTA (living things)
Records of Perforatus perforatus (an acorn barnacle) :
1: Perforatus perforatus (an acorn barnacle)
8 Apr 2012 OSGR: SY67 50° 30’ N, 2° 30’ W Vice County: Dorset (VC 9) England
on rock exposed at low spring tide
Image 1: Active animal - cirri expanded - enlargedImage 2: Active animal - cirri part deployed - enlargedImage 3: Active animal - cirri part deployed - enlarged (2)Image 4: Active animal - tergoscutal flaps partly exserted - enlargedImage 5: Aperture and tergoscutal flaps - dorsal view - highly enlargedImage 6: Aperture and tergoscutal flaps - dorsal view - highly enlarged (2)Image 7: Barnacle - cirri deployed - enlargedImage 8: Barnacle - cirri deployed - enlarged (2)Image 9: Barnacles - oblique view - highly enlargedImage 10: Live animal - cirri withdrawn - enlarged
2: Perforatus perforatus (an acorn barnacle)
16 Mar 2008 OSGR: SX04 50° 20’ N, 4° 50’ W Vice County: East Cornwall (VC 2) England
barnacles on mussel shell, washed up on beach
Image 1: Barnacles - Image 2: Barnacles - lateral view - close-upImage 3: Barnacles on mussel shell - close-up - pale backgroundImage 4: Barnacles on mussel shell - close-up - pale background (2)Image 5: Barnacles - Image 6: Barnacles - Image 7: Barnacles - Image 8: Calcareous basis (where a barnacle has been knocked off) - close-up - enlargedImage 9: Wall plates - close-up - enlarged

Perforatus perforatus (an acorn barnacle) may be included in identification literature listed under the following higher taxa:

NBNNBN (data.nbn.org.uk) has a distribution map for Perforatus perforatus (an acorn barnacle)
BioInfoBioInfo (www.bioinfo.org.uk) has 2 host/parasite/foodplant and/or other relationships for Perforatus perforatus (an acorn barnacle)
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