Limatula chilensis sp. nov. A new Limidae (Mollusca: Bivalvia) from northern Chile

Limatula chilensis sp. nov. is described on the basis of shell morphology and soft tissue anatomy. Studied individuals were obtained periodically between June 2008 and January 2009 from sublittoral soft-sediments off Punta Coloso in northern Chile at depths of 22 to 33 m. Shell morphology of the new...

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Published inRevista de biología marina y oceanografía Vol. 47; no. 2; pp. 311 - 316
Main Authors Oliva, Marcelo, Campusano, Carla Adriana, Ruz, Paula Mariela
Format Journal Article
LanguageEnglish
Published 01.08.2012
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Summary:Limatula chilensis sp. nov. is described on the basis of shell morphology and soft tissue anatomy. Studied individuals were obtained periodically between June 2008 and January 2009 from sublittoral soft-sediments off Punta Coloso in northern Chile at depths of 22 to 33 m. Shell morphology of the new species differs from the 4 described species of Limatula from the Pacific coast of South America and Antarctic Peninsula (5°-65°S). Main characteristics of L. chilensis include an average height of 3.50 mm (range 2.36-4.42, SD ± 0.60, n = 34), number of radial ribs 16-21 (mode = 20, SD= 1.69, n = 8) and greater shell obliqueness. L. chilensis is the only known species of the genus found off northern Chile. Limatula chilensis sp. nov. se describe en base a la morfología de la concha y tejidos blandos. Los especímenes estudiados se obtuvieron periódicamente entre junio de 2008 y enero de 2009 desde fondos blandos someros submareales en Punta Coloso, norte de Chile, a profundidades entre 22 y 33 m. La morfología de la concha es diferente a la de las 4 especies de Limatula descritas para las costas del Pacífico de Sudamerica y Península Antártica (5º-65ºS). Las características más evidentes de L. chilensis fueron el tamaño 3,50 mm (rango 2,36-4,42, DE ± 0,60, n = 34), número de costillas radiales 16-21 (moda = 20, DE = 1,69, n = 8) y una fuerte oblicuidad de la concha. L. chilensis es la única especie conocida del género, para las costas del norte de Chile.
ISSN:0717-3326
DOI:10.4067/S0718-19572012000200012