Diodora ticaonica
NameDiodora ticaonica
Scientific NameDiodora ticaonica
Common NameTicao Keyhole Limpet
FamilyFissurellidae
GenusDiodora
Speciesticaonica
Geographic DistributionIndo-Pacific, specifically known from the Philippines (e.g., Ticao Island).
Habitatintertidal
Shell Shapeconical
Average Size (mm)Not determinable from image; generally small to medium-sized for limpets, typically ranging from 10-30 mm.
Identifying FeaturesConical shape, prominent cancellate sculpture (radial ribs crossed by concentric lines), crenulated shell margin, and the characteristic apical keyhole (though not visible in this view).
Raritycommon
Author CitationReeve, 1850
Description
A small, conical keyhole limpet shell, characterized by its off-white to cream coloration with faint reddish-brown radial stripes. The shell exhibits prominent radial ribs intersected by concentric growth lines, creating a distinctly cancellate or beaded sculpture. The margin is crenulated due to the ribbing. As a member of the genus Diodora, it possesses an apical orifice (keyhole), though not visible in this lateral view.
