A new record of Bacescuella parvithecata (Oligochaeta, Tubificidae) from Golfo de California

Abstract
The marine littoral tubificid Bacescuella parvithecata Erséus, 1978 is reported from Puerto Peñasco, Sonora, Mexico, at the inner end of Golfo de California. The new material is compared with the original, Atlantic specimens of the species, and the identity of the Pacific form, previously known from the Galapagos Islands, confirmed