A new species and a new record of Muricidae (Gastropoda) from Brazil: genera Pterynotus and Leptotrophon

被引：0
作者：
Pimenta, Alexandre Dias [1 ]
do Couto, Diogo Ribeiro [1 ]
Santos Costa, Paulo Marcio [1 ]
机构：
[1] Univ Fed Rio de Janeiro, Dept Invertebrados, Museo Nacl, BR-20940040 Rio De Janeiro, Brazil
来源：
NAUTILUS | 2008年 / 122卷 / 04期
关键词：
Muricinae; Trophoninae; South Atlantic; biodiversity; taxonomy;
D O I：
暂无
中图分类号：
Q17 [水生生物学];
学科分类号：
071004 ;
摘要：
Leptotrophon atlanticus, a new species of Leptotrophon Houart, 1995, a genus of Trophoninae previously known only front the Indo-Pacific Ocean, is described from the northeastern coast of Brazil, from depths of 240-260 m. Leptotrophon atlanticus is very similar to Leptotrophon kastoroae Houart, 2007., but has shorter spines, which are brown colored. Vie shell microsculpture of L. atlanticus was studied using scanning electron microscopy, which revealed a protoconch slightly granulated on the last quarter of the whorl and a teleoconch with growth striae crossed by regularly spaced zigzag spiral lines and axial microstriae. The radula of L. atlanticus fits the pattern described for the genus; but the lateral/marginal cusps of the rachidian teeth are not as independent of each other, being somewhat fused into a common base. This study reports the first record from the South Atlantic Ocean of the Muricinae Plerynotus habanensis Vokes, 1970, previously known only from the Caribbean region.
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页码：244 / 251
页数：8
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