Two new species in the genus Petta from deep waters of southeastern Australia, RV Investigator voyage IN2017_V03 (2017)

Petta Malmgren, 1866 is a small and poorly known genus of the annelid family Pectinariidae Quatrefages, 1866. Prior to this study, the genus comprised four species. The authors have revised the genus by re-examining the types and providing updated illustrated re-descriptions of its species, except for P. assimilis of which the type material has been lost. Two species P. investigatoris n. sp. and P. williamsonae n. sp. are described from deep water off the coast of southeastern Australia and represent the first records of this genus in Australian waters. These two species were collected from the RV Investigator voyage IN2017_V03 - see <a href=\"https://www.marine.csiro.au/data/trawler/survey_details.cfm?survey=IN2017_V03\">IN2017_V03</a> for voyage details, maps, other data and publications.
If this data has been used in any products, please acknowledge with the following: We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353) in undertaking this research.

Petta Malmgren, 1866是一类体型微小且研究程度极低的属级类群，隶属于环节动物门帚毛虫科（Pectinariidae Quatrefages, 1866）。在本研究开展前，该属共计包含4个物种。本研究作者通过重新检视模式标本，对该属进行了修订，为除P. assimilis之外的所有物种提供了更新且配有插图的重新描述；因P. assimilis的模式标本已遗失，故未对其开展该项工作。本次研究描述了2个新种：P. investigatoris n. sp.与P. williamsonae n. sp.，它们采自澳大利亚东南部近海的深水海域，亦是该属在澳大利亚海域的首次记录。上述两个新种均采集自‘调查号’（RV Investigator）科考航次IN2017_V03——可参阅<a href="https://www.marine.csiro.au/data/trawler/survey_details.cfm?survey=IN2017_V03">IN2017_V03</a>获取航次详情、分布图、其他数据及相关出版物。若将本数据集用于任何成果产出，请按以下方式致谢：本研究致谢澳大利亚联邦科学与工业研究组织（CSIRO）海洋国家设施（https://ror.org/01mae9353）的支持。