A new species of Websterinereis from the Gulf of California and redescription of Websterinereisfoli (Fauvel, 1930) (Annelida, Nereididae)

摘要

A new species of Websterinereis Pettibone, 1971, Websterinereispettiboneaesp. n. is described from La Paz Bay, Gulf of California, Mexico. This species is similar to Websterinereisfoli (Fauvel, 1930) in the neuropodial falcigers shape, but can be separated by the tentacular cirri length, notopodial prechaetal lobe shape, and the size of the notopodial dorsal and ventral ligules on posterior parapodia. Websterinereisfoli is redescribed based upon type material. Additional observations on the inter-annual density variation of Websterinereispettiboneaesp. n. during a four-year study are also provided. A key to all species of Websterinereis is included.