Markhaseva E.L.1, Schulz K.2 2007. New benthopelagic aetideids (Crustacea: Copepoda: Calanoida) from deep Antarctic waters // Invertebrate Zoology. Vol.3 (for 2006). No.2: 137–155 [in English].

1 Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St. Petersburg 199034, Russia. E-mail: copepoda@zin.ru

2 DZMB-Senckenberg, Biozentrum Grindel & Zoologisches Museum, Martin-Luther-King-Platz 3, Hamburg D-20146, Germany. E-mail: kschulz@zoologie.uni-hamburg.de

KEY WORDS copepods, Aetideidae, Bradyetes, Pseudeuchaeta, benthopelagic, Weddell Sea.

ABSTRACT: Three new and one rare benthopelagic aetideid species of Bradyetes and Pseudeuchaeta are described from female specimens collected during the German expeditions ANDEEP I–III in 2002 and 2005 from bathy- and abyssopelagic depths above the sea bed. Pseudeuchaeta acuticornis sp.n. is distinguished from congeners by 5 setae on the second endopodal segment of mandible, presence of lateral spine on the first exopodal segment of P1 and 3 setae on the maxillule coxal endite. P. acuticornis is the second representative of the genus found in high Antarctic waters. Bradyetes weddellanus sp.n. differs from the other species of the genus by, among other states, a very small sensory appendage on the syncoxa of maxilliped, a short lateral spine of P1 exopod segment 2, one additional seta on the distal segment of antennule. Bradyetes curvicornis sp.n. is distinguished from congeners by the number of setae on the second endopodal segment of mandible and maxillulary endopod and a very long sensory appendage on the syncoxa of maxilliped. Within Bradyetes both new species are distinctly larger than their congeners. Furthermore, present collections yielded female specimens of Bradyetes cf. inermis from the South Atlantic and in the Southern Ocean; these are the first records for Bradyetes from the southern hemisphere.

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