Distribution
provided by World Register of Marine Species
Gulf of St. Lawrence (unspecified region); Cobscook Bay, but see Identification note.
North-West Atlantic Ocean species (NWARMS)
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Habitat
provided by World Register of Marine Species
littoral and shallow infralittoral.
North-West Atlantic Ocean species (NWARMS)
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Identification
provided by World Register of Marine Species
Lineus viridis and NW Atlantic Ramphogordius sanguineus (formerly Lineus socialis) are easily confused by non-specialists and by nemertinologists not very familiar with those species. Lineus viridis and Riseriellus occultus are very difficult to distinguish. Hence, records attributed to either are suspect if ID was not done by one of few experts. In NE USA, Lineus ruber and Lineus viridis also commonly confused, especially with larger, dark-colored specimens. Head is reddish in former, greenish (but with reddish brain) in latter.
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