Neothais harpa
NameNeothais harpa
Scientific NameNeothais harpa
Common NameHarpa Rock Snail
FamilyMuricidae
GenusNeothais
Speciesharpa
Geographic DistributionIndo-Pacific region, including Western Pacific (e.g., Japan, Philippines, Indonesia, Australia) and parts of the Indian Ocean.
Habitatintertidal
Shell Shapefusiform
Average Size (mm)40-60
Identifying FeaturesStrong, rounded axial ribs crossed by spiral cords, resulting in a nodulose or cancellate sculpture. Prominent shoulder nodules. The aperture has a distinct reddish-brown interior with a white columella and an outer lip that usually features internal denticles or lirations. The operculum is dark and corneous.
Raritycommon
Author Citation(Conrad, 1837)
Description
Neothais harpa is a medium-sized, heavy marine gastropod belonging to the family Muricidae. Its shell is characterized by a robust, fusiform to ovate-conical shape with a moderately elevated spire. The surface is sculptured with prominent axial ribs and spiral cords, creating a nodulose or cancellate pattern. The shell color typically ranges from brown to purplish-brown, often adorned with lighter nodules or bands. The aperture is distinctively colored, usually a deep reddish-brown or purplish-brown internally, contrasting with a white columella and outer lip, which often bears internal denticles or lirations. It is a predatory snail found in the Indo-Pacific region.
