MUSEO ARGENTINO DE CIENCIAS NATURALES "BERNARDINO RIVADAVIA"
Unidad Ejecutora - UE
A new species of Mysella from Patagonia (Bivalvia, Galeommatoidea)
ITUARTE, C.; MARTIN, P.; ZELAYA, D. G.
THE NAUTILUS (PHILADELPHIA)
BAILEY-MATTHEWS SHELL MUSEUM
Lugar: Sanibel - Florida; Año: 2012 vol. 126 p. 136 - 136
The poorly known diversity of the genus Mysella in the Southwestern Atlantic is enlarged based on the description of a new species from San Julián Bay, Santa Cruz Province, Argentina. Mysella patagona new species is characterized by the relative large, striking subquadrate, slightly inequilateral and flat shell; a not solid hinge plate with two widely diverging cardinal teeth in the right valve; and a cylindrical internal ligament located in a deeply recessed ligament pit. From the anatomical point of view, M. patagona new species is characterized by the presence of both, inner and outer, demibranchs, with very few interlamellar junctions. The marked subquadrate shell outline easily distinguishes M. patagona from any other Mysella species currently known from the Magellan Region.