The Nautilus Log
Semipallium fulvicostatum

Semipallium fulvicostatum

NameSemipallium fulvicostatum
Scientific NameSemipallium fulvicostatum
Common NameOrange-ribbed Scallop
FamilyPectinidae
GenusSemipallium
Speciesfulvicostatum
Geographic DistributionIndo-Pacific, including regions around Japan, Taiwan, and the Philippines.
Habitatintertidal
Shell Shapebivalve
Average Size (mm)40
Identifying FeaturesProminent, often numerous, radial ribs giving a corrugated texture; fan-shaped outline; unequal auricles at the hinge; and a characteristic color pattern of lighter background with darker, often reddish-brown or purplish, radial stripes on the ribs. The specimen in the image shows a clear convex lower valve.
Dietfilter-feeder
Raritycommon
Author CitationAdams & Reeve, 1848

Description

A marine bivalve mollusc, commonly known as the Orange-ribbed Scallop, belonging to the family Pectinidae. Its shell is fan-shaped with prominent radial ribs and unequal auricles. The coloration typically features light brown to yellowish-orange hues with darker reddish-brown or purplish radial stripes. It is found in the Indo-Pacific region, inhabiting shallow marine waters, often attached to hard substrates.

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