Gastropod-associate
Guides
Euceramus
Euceramus is a genus of porcelain crabs (family Porcellanidae) described by Stimpson in 1860. At least one species, E. transversilineatus, has been documented as a commensal endosymbiont living within the mantle lobe of marine gastropods, specifically the Pacific crown conch Melongena patula in the Gulf of California. The genus belongs to the diverse anomuran crab radiation, characterized by a compressed body form adapted for inhabiting tight spaces.