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Type: Article
Published: 2019-02-14
Page range: 359–371
Abstract views: 75
PDF downloaded: 2

Gammaropsis elvirae sp. nov., a widely distributed amphipod (Amphipoda: Photidae) in the Yucatan Shelf, with ecological comments and a key for the genus in tropical America

Laboratorio de Biodiversidad Marina y Cambio Climatico, El Colegio de la Frontera Sur, Av. Rancho Polígono 2-A, Col. Ciudad Industrial, C.P. 24500, Lerma, Campeche, Mexico
Laboratorio de Biodiversidad Marina y Cambio Climatico, El Colegio de la Frontera Sur, Av. Rancho Polígono 2-A, Col. Ciudad Industrial, C.P. 24500, Lerma, Campeche, Mexico
Crustacea New species Peracarida crustaceans macroinfauna species diversity Gulf of Mexico

Abstract

Gammaropsis elvirae sp. nov. is described and illustrated here, as a new species of the family Photidae Boeck, 1871, occurring on sites widely distributed in the soft-sediment habitats from the Yucatan shelf, southern Gulf of Mexico. This new species differs from all other congeners by a unique set of characteristics: lateral cephalic lobes rounded; outer lobes of lower lip with one cone on each lobe; gnathopod 1 propodus longer than carpus; gnathopod 2 propodus enlarged with small convoluted processes on posterior margin and palmar angle undefined; gnathopod 2 dactylus short, less than one half in length of propodus; dense setation on basis, carpus, and propodus of gnathopod 2; epimeral plates 1–3 rounded; inner ramus of uropods 1–3 longer than outer ramus; and telson emarginated. Ecological comments on spatial distribution and associated environmental variables are included, as well an identification key to the genus in tropical America.

 

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