Three artotrogids (Crustacea: Copepoda: Siphonostomatoida) from the Ross Sea, Antarctica

作     者：Conradi, Mercedes 

作者机构：Univ Seville Fac Biol Dept Zool Marine Biol Lab ES-41012 Seville Spain 

出 版 物：《POLAR RESEARCH》 (极地研究)

年 卷 期：2014年第33卷第1期

页      面：24135-24135页

核心收录：

学科分类：07[理学] 0707[理学-海洋科学] 0708[理学-地球物理学] 0705[理学-地理学] 070501[理学-自然地理学] 0713[理学-生态学] 

主　　题：Antarctica Artotrogidae redescription Neobradypontius Sestropontius Cryptopontius 

摘      要：The Artotrogidae, one of the most primitive of siphonostomatoid families, consists currently of 117 species in 21 genera. Most of these species (65%) are poorly or incompletely described since they have been rarely recorded in recent decades and, when encountered, have been found in very low numbers. During the 19th Italian Antarctic Expedition, with the RV Italica, to the Ross Sea in austral summer 2004, some artotrogid copepods were collected. This paper redescribes two species of artotrogid copepods, which are known only from the Southern Ocean, Neobradypontius neglectus and Cryptopontius latus, and describes for the first time a male of the genus Neobradypontius. Furthermore, a new species is described and added to Sestropontius, increasing the number of known species of this genus to three. The main discrepancies between the original descriptions and the specimens of the two species collected from the Ross Sea redescribed here were on the armature of the antennary exopod and leg 5. The new species, Sestropontius italicae, shares with its most similar congener, S. mckinnoni, the armature of the third endopodal segment of leg 1 and leg 2 and that of the third exopodal segment of leg 4. However, the segmentation of the antennae and the armature on the antennary exopod are different.