Cup-and-Saucer Limpet
NameCup-and-Saucer Limpet
Scientific NameCrucibulum spinosum
Common NameCup-and-Saucer Limpet
FamilyCalyptraeidae
GenusCrucibulum
Speciesspinosum
Geographic DistributionEastern Pacific Ocean, ranging from California (USA) south to Peru.
Habitatintertidal
Shell Shapeconical
Average Size (mm)Typically ranges from 20 to 60 mm in diameter, with some specimens reaching up to 70 mm.
Identifying FeaturesIts conical shape, prominent radial ribs (often spiny or nodulose), and the characteristic internal 'cup' or 'shelf' (which gives it its common name) are key identifying features. The apex is often slightly recurved.
Dietfilter-feeder
Raritycommon
Author Citation(Sowerby, 1824)
Description
The Cup-and-Saucer Limpet is a marine gastropod mollusk characterized by its conical, cap-shaped shell. The common name derives from a distinctive internal shelf or 'cup' structure, though not visible in this dorsal view. The exterior is typically sculptured with prominent radial ribs, which can sometimes bear spines or nodules, giving it a rough texture. This specimen displays a cream to off-white coloration with some brownish or reddish-brown tints, particularly towards the margins and apex.
