Diodora giannispadai
NameDiodora giannispadai
Scientific NameDiodora giannispadai
Common NameGiannispadai's Keyhole Limpet
FamilyFissurellidae
GenusDiodora
Speciesgiannispadai
Geographic DistributionMediterranean Sea, particularly reported from Italian waters (e.g., Sardinia, Sicily).
Habitatsubtidal
Shell Shapeconical
Average Size (mm)Up to 15 mm in length.
Identifying FeaturesThe combination of its conical shape, central keyhole opening, striking greenish coloration, and the speckled, extended mantle are key identifying features. The strong concentric and radial sculpture is also characteristic.
Author Citation(Amati, 1985)
Description
A small, conical keyhole limpet, characterized by its distinctive greenish-olive shell with prominent concentric growth lines and radial ribs. The shell has a central apical opening (keyhole). The mantle is often extended, partially covering the shell, and appears translucent white with opaque white speckles. It is observed on a rocky, encrusted marine substrate, alongside other sessile marine organisms like sponges.
