Comprehensive DescriptionRead full entry
Siphonosoma cumanense is widespread and is the most common species of the genus. It is morphologically plastic and has a long list of synonyms reflecting its convoluted history in sipunculan literature (Cutler, 1994). This species is in general of medium size, but may exceed 400 mm in length. The semi-transparent skin allows the LMBs and, in live worms, the ocher-colored nephridia to be visible through the trunk wall. An internal characteristic differentiating this species is the origin of the dorsal and ventral retractor muscles at the same level.