Scientia Marina, Vol 77, No 1 (2013)

The Caprellidea (Crustacea: Peracarida: Amphipoda) from the Gulf of Mexico with a description of a new species of Paracaprella


https://doi.org/10.3989/scimar.03753.26C

Ignacio Winfield
Laboratorio de Crustáceos, Facultad de Estudios Superiores Iztacala, UNAM , Mexico

Manuel Ortiz
Laboratorio de Crustáceos, Facultad de Estudios Superiores Iztacala, UNAM , Mexico

Abstract


A new species of caprellid amphipod of the genus Paracaprella is described and illustrated in detail. All the material reported was collected from coral rubble samples from the Arrecife Tuxpan/Lobos Protected Natural Area, off Veracruz State, Mexico, WSW Gulf of Mexico. The new species is characterized by large eyes; article 2 of peduncle of antenna 2 with a distoventral process; body dorsally setose; large subrectangular projection on the anteroventral margin of pereonite 2; basis of gnathopod 2 elongate and thin with a proximal knob on posterior margin, propodus longer than broad, with a robust grasping spine, and a large and robust tooth distally; and pereopods 5, 6 and 7 with several long plumose setae. The new species increases the numbers of Paracaprella species recorded around the world to 8, and the caprellid species from the Gulf of Mexico to 16. All caprellid amphipod species documented from this gulf inhabit the coastal zone and six in the deep sea. In addition, the number of caprellid species decreases along the bathymetric gradient: 15 species on the littoral zone, 6 on the continental shelf, 5 on the continental slope, and 3 on the abyssal plain.

Keywords


Crustacea; Paracaprella; new species; coral reef; Mexico; taxonomy

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References


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