Macrostylis cerritus sp. nov., a new species of Macrostylidae (Isopoda: Asellota) from the Weddell Sea, Southern Ocean

• Published in: Zootaxa
• Main Authors: VEY, AIDAN, BRIX, SASKIA
• Format: Article in Journal/Newspaper
• Language: English
• Published: Mangolia Press 2009
• Subjects: Crustacea; Macrostylis; Antarctica; deep sea; taxonomy; Seta; Southern Ocean; Weddell; Weddell Sea; Antarc*
• Online Access: https://www.mapress.com/j/zt/article/view/zootaxa.2096.1.21; https://doi.org/10.11646/zootaxa.2096.1.21

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.