Lucapina aegis
NameLucapina aegis
Scientific NameLucapina aegis
Common NameKeyhole Limpet
FamilyFissurellidae
GenusLucapina
Speciesaegis
Geographic DistributionEastern Pacific, specifically from California (USA) to Baja California (Mexico).
Habitatintertidal
Average Size (mm)20
Identifying FeaturesDistinctive oval, flattened shape; prominent apical keyhole (foramen); strong cancellate sculpture (intersecting radial and concentric ribs) creating a grid-like pattern; internal callus around the foramen.
Raritycommon
Author Citation(Reeve, 1850)
Description
A marine gastropod mollusk shell, commonly known as a keyhole limpet. It exhibits an oval, flattened shape with a distinctive apical keyhole-shaped opening (foramen). The shell surface is characterized by a prominent cancellate sculpture, formed by intersecting radial ribs and concentric growth lines, giving it a textured, grid-like appearance. The overall coloration is mottled, blending with its rocky habitat.
