A new deep-sea genus and species of the family Asterocheridae (Copepoda, Siphonostomatoida) from the continental margin off Angola (East Equatorial Atlantic)статья

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[1] Ivanenko V. N., Defaye D. A new deep-sea genus and species of the family asterocheridae (copepoda, siphonostomatoida) from the continental margin off angola (east equatorial atlantic) // Crustaceana. — 2004. — Vol. 77. — P. 1131–1144. Gerulusosacculus commutabilis, a new genus and species of the family Asterocheridae Giesbrecht, 1899 (Copepoda: Siphonostomatoida) is described, based on specimens collected with a bottom trawl from the continental margin off equatorial Africa (Angola) at a depth of 1288-1289 m. The new genus is added to a group of 9 genera of asterocherids (Australomyzon Nicholls, 1944; Bythocheres Humes, 1988; Cheramomyzon Humes, 1989; Collocheres Canu, 1893; Collocherides Stock, 197 1; Dermatomyzon Claus, 1889; Glyptocheres Humes, 1987; Ophiurocheres Humes, 1998; Rhynchomyzon Giesbrecht, 1895), which is distinguished by the 5-segmented urosome in the female and the 6-segmented urosome in the male. Gerulusosacculus differs from all other genera in this group in having an elongate body, a dorso-ventrally flattened prosome, the genital somite of female and male 2.3 times as wide as long, the rostrum with a broad edge, the terminal claw of the antenna and of the maxilliped divided into two parts by a transverse suture, the swimming legs 1-4 with slender setae bearing short setules, the lobe-like leg 5, and the elongate caudal rami. The variability and the asymmetry of the armature of the swimming legs 2-4 are additional remarkable features of G. commutabilis.

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