Macrostylis cerritus sp. nov., a new species of Macrostylidae (Isopoda: Asellota)

• Main Authors: From The Weddell Sea, Southern Ocean, Aidan Vey, Saskia Brix
• Other Authors: The Pennsylvania State University CiteSeerX Archives
• Format: Text
• Language: English
• Subjects: Southern Ocean; Weddell Sea; Weddell; Seta; Antarc*; Antarctica
• Online Access: http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.193.1091; http://www.mapress.com/zootaxa/2009/f/zt02096p370.pdf

Macrostylis cerritus sp. nov. (Macrostylidae) is described from the Weddell Sea, Antarctica, at a depth of 2149 m. The new species differs from other species of Macrostylis due to the incisor with 4 cusps; the strongly hook-shaped ischium of pereopod 3; pereopod 4 being greatly reduced and juvenile in appearance; the operculum bearing a ventral spine-like seta; and the absence of pleopod 5. This species is the fourth deep-sea macrostylid identified from the Southern Ocean, and is one more species described from the specimens of ANDEEP I–III expeditions. Key words: Macrostylis, Antarctica, deep sea, taxonomy