Petricola lithophaga
NamePetricola lithophaga
Scientific NamePetricola lithophaga
Common NameRock-boring Petricola
FamilyPetricolidae
GenusPetricola
Specieslithophaga
Geographic DistributionMediterranean Sea and Eastern Atlantic Ocean, ranging from Portugal south to West Africa.
Habitatintertidal
Average Size (mm)Adult shells typically range from 20 to 40 mm, with some specimens reaching up to 60 mm. The specimen shown in the image is approximately 5-6 mm.
Identifying FeaturesKey features include its rock-boring habit, an elongated and often irregular shell shape, prominent concentric growth lines, and a deep pallial sinus. The shell surface can be smooth or exhibit fine radial striae, particularly towards the posterior end.
Raritycommon
Author Citation(Retzius, 1788)
Description
A bivalve mollusc known for its rock-boring habit. The shell is typically elongated oval to subrectangular, white to yellowish, with prominent concentric growth lines. The image displays a single, small, translucent valve of this species, likely a juvenile specimen.
