Revision of the Australian Sabellariidae (Polychaeta) and descriptionof eight new species

摘要

The family Sabellariidae is represented in Australian waters by eleven species belonging to five genera, including eight of them new to Science: Idanthyrsus nesos n. sp., I. willora n. sp., Lygdamis wambiri n. sp., Phalacrostemma maloga n. sp., Sabellaria kooraltha n. sp., S. lungalla n. sp., S. pyramis n. sp., and Tetreres terribilis n. sp. Three genera, Phalocrostemma, Sabellaria and Tetreres, are newly recorded from Australia. Descriptions of all species are given, acompanied by detailed illustrations, including drawings, photographs and scanning electron micrographs, tables summarising specific diagnostic characters of all species of each genus, and distribution maps within Australia. A key to all genera worldwide and Australian species is given. Maximum parsimony analyses based on morphological features have been performed to assess the position of the new species and relationships with other Sabellariidae. For this purpose, the Australian species, the type species of each genus and some others species, representing the variability within each group, were incorporated into the analyses. Some of the species were recovered within monophyletic genera (Phalacrostemma and Tetreres), while others have been considered as member of previously recognised genera (Idanthyrsus, Lygdamis and Sabellaria) have not been assessed as monophyletic.