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Revista mexicana de biodiversidad
versión On-line ISSN 2007-8706versión impresa ISSN 1870-3453
Resumen
ORTIZ, Manuel; WINFIELD, Ignacio y GONZALEZ-SALAZAR, Jan. A new species of Ampelisca (Crustacea: Amphipoda: Ampeliscidae) from Santa Margarita Island, west of the Baja California Peninsula, Mexico. Rev. Mex. Biodiv. [online]. 2021, vol.92, e923421. Epub 03-Feb-2022. ISSN 2007-8706. https://doi.org/10.22201/ib.20078706e.2021.92.3421.
A new species of the genus Ampelisca Krøyer, 1842 is described and illustrated in detail. The specimens were collected from soft bottom at 15 m depth in the northern coast of Santa Margarita Island, Mexico. Ampelisca capetilloi sp. nov. is characterized by: head as long as pereonite 1-2 combined; mandible with 8 rakers; maxilla 1 palp article 2 expanded distally; gnathopod 1 propodus anterior margin with 7 distal setae; pereopod 7 basis reaching middle portion of merus, posterodistal lobe of merus large, extending one-third of carpus; pleonite 3 dorsal margin smooth; urosomite 1 slightly sinuous dorsally; telson bilobate, each lobe with 3 dorsal setae. The new species is similar to Ampelisca mexicanaBarnard, 1954 and A. pugetica Stimpson, 1864, but can be easily recognized with the identification key included herein. A checklist for Ampelisca species documented from the Eastern Tropical Pacific, including their geographic distribution, habitat, and depth range, is provided.
Palabras llave : Crustacea; Malacostraca; Shallow water; Taxonomy.