Abstract
During the Antarctic Polarstern cruises ANT XIX/3 (ANDEEP-I), XIX/5 (LAMPOS), and XXI/2 (BENDEX) new material of symbiotic copepods associated with polynoid polychaetes was collected. Here the authors present results for the highly modified family Herpyllobiidae Hansen, 1892. New records of Herpyllobius antarcticus Vanhoffen, 1913 and Herpyllobius polarsterni Lopez-Gonzalez, Bresciani and Conradi, 2000 are provided from the eastern Weddell Sea and Bouvet Island respectively. A new species of the genus Eurysilenium Sars, 1870, E. australis, is described from specimens collected at the eastern Weddell Sea. A new genus, Gottoniella gen. nov., is proposed to include two species, G. antarctica sp. nov. and G. andeepi sp. nov., described from material collected from the Weddell Sea and Scotia Arc.
Highlights
The family Herpyllobiidae Hansen, 1892 is one of the most highly transformed families among the parasitic Copepoda, grouping a few genera of uncertain ordinal placement, the arrangement of 3 aesthetascs on the antennules of herpyllobiid copepodid stages provides evidence that the family belongs to the poecilostome copepods (Boxshall and Halsey, 2004)
Three genera have been traditionally considered in this family: Herpyllobius Steenstrup and Lütken, 1861 (17 species), Eurysilenium Sars, 1870 (4 species), and the ill-defined Phallusiella LeighSharpe, 1926 (2 species)
LÓPEZ-GONZÁLEZ et al The body of adult females comprises two portions connected by a short stalk: an endosoma inside the host body with attachment and nourishment functions; and an external ectosoma carrying the genital apertures with the ovisacs (Lützen, 1964; 1966)
Summary
The family Herpyllobiidae Hansen, 1892 is one of the most highly transformed families among the parasitic Copepoda, grouping a few genera of uncertain ordinal placement (see López-González and Bresciani, 2001), the arrangement of 3 aesthetascs on the antennules of herpyllobiid copepodid stages provides evidence that the family belongs to the poecilostome copepods (Boxshall and Halsey, 2004). 244 P.J. LÓPEZ-GONZÁLEZ et al. The body of adult females comprises two portions connected by a short stalk: an endosoma inside the host body with attachment and nourishment functions; and an external ectosoma carrying the genital apertures with the ovisacs (Lützen, 1964; 1966). Herpyllobiid genera mainly differ from each other in the shape of the ectosoma and endosoma of mature females, and (when known) in the shape and structure of the adult male and last male copepodid (Lützen, 1964). The new genus exhibits a combination of characters unlike any other known herpyllobiid taxon, and its relationships with the other genera in the family are discussed
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