A new species of Decamastus Hartman, 1963 (Polychaeta: Capitellidae) from the Gulf of California, with remarks on its habitat
Por:
Hernández-Alcántara P., Solís-Weiss V., García-Garza M.E.
Publicada:
1 ene 2019
Resumen:
This is the first report of Decamastus Hartman, 1963 in the Tropical Eastern Pacific, since two previous records were misidentified. Based on individuals from the continental shelf of the Gulf of California, Decamastus okuilin sp. n. is described, illustrated, and compared with the other species of the genus. The new species can be distinguished by the presence of a palpode in the anterior end of the prostomium, the first chaetiger bearing only notopodia, abdominal hooded hooks with more than 20 small teeth arranged in at least four rows above the main fang, and a methyl green staining pattern characterized by a uniformly light green staining in chaetigers 7–10 and dark speckles encircling segments in chaetigers 11 and 12. Its habitat is characterized by variations in dissolved oxygen, depth (44 to 94 m), and sandy bottoms. The methyl green staining pattern of D. gracilis Hartman, 1963, the other species found in the Pacific, is also described and illustrated. © 2018, Senckenberg Gesellschaft für Naturforschung and Springer-Verlag GmbH Germany, part of Springer Nature.
Filiaciones:
Hernández-Alcántara P.:
Unidad Académica de Ecología y Biodiversidad Acuática, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Circuito Exterior S/N, Cd. Universitaria, México City, 04510, Mexico
Solís-Weiss V.:
Unidad Académica de Sistemas Arrecifales, Instituto de Ciencias del Mar y Limnología, Universidad Nacional Autónoma de México, Prol. Av. Niños Héroes s/n, Puerto Morelos, Quintana Roo 77580, Mexico
García-Garza M.E.:
Facultad de Ciencias Biológicas, Laboratorio de Biosistemática, Universidad Autónoma de Nuevo León, Av. Universidad s/n, Cd. Universitaria Ap. Postal 5 “F”, San Nicolás de los Garza, Nuevo León 66451, Mexico
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