Markhaseva E.L.1, Schulz K.2 2007. Lamiantennula gen.n. (Copepoda: Calanoida): a new deep-water benthopelagic genus of Arietelloidea // Arthropoda Selecta. Vol.15 (for 2006). No.3: 203–210 [in English].
1 Zoological Institute, Russian Academy of Sciences, Universitetskaya nab. 1, St. Petersburg 199034 Russia.
2 DZMB-Senckenberg, Biozentrum Grindel & Zoologisches Museum, Martin-Luther-King-Platz 3, D-20146 Hamburg Germany. E-mail: firstname.lastname@example.org
Key words: Copepoda, Calanoida, taxonomy, deep sea, benthopelagic, Weddell Sea.
Abstract. A single adult female specimen of a new genus and species, Lamiantennula longifurca, was collected from the Weddell Sea (Southern Ocean) in 2002 during ANDEEP II expedition in vicinity of the abyssal sea bed. Lamiantennula longifurca is unique among calanoid copepods in the presence of a lamelliform antennulary complex composed of three proximal segments. The genital double-somite of the new genus is asymmetrical and the caudal rami are exceptionally long. The new genus is distinguished among arietelloideans in armament of the mandible endopod segment 2 bearing 2 setae, one seta having a collar around its base; exopod with 5 setae; in maxillule with strongly enlarged praecoxal arthrite, basal endites absent, and epipodite lacking setae; in leg 1 exopod segment 2 without lateral spine. The new genus does not fit the diagnosis of any family of the superfamily Arietelloidea, however, due to the setation of oral parts and leg 1 it is provisionally placed within Hyperbionychidae. Lamiantennula longifurca is the first benthopelagic arietelloidean calanoid copepod described from Antarctic waters.