Muricopsis marcusi
NameMuricopsis marcusi
Scientific NameMuricopsis marcusi
Common NameMarcus's Murex
FamilyMuricidae
GenusMuricopsis
Speciesmarcusi
Geographic DistributionWestern Atlantic, primarily off the coast of Brazil (e.g., São Paulo, Espírito Santo, Rio de Janeiro).
Habitatintertidal
Shell Shapefusiform
Average Size (mm)15-25
Identifying FeaturesKey features include the robust, spiny/nodulose sculpture formed by intersecting axial and spiral elements, the relatively short siphonal canal, and its characteristic coloration. The live animal's yellowish body is also visible when extended.
Rarityrare
Author Citation(Marcus & Marcus, 1962)
Description
A small, predatory marine snail, Muricopsis marcusi is characterized by its robust, fusiform shell adorned with prominent axial ribs and spiral cords, often forming nodules or spines. The shell typically exhibits reddish-brown to purplish-brown coloration, sometimes with lighter encrustations or patterns. The aperture is ovate, and it possesses a relatively short siphonal canal. The live animal, as seen in the image, has a yellowish foot and tentacles.
