Three new species of bacterivorous Chrysopetalidae and Microphthalmidae (Annelida) inhabiting a whale fall off eastern Australia Author Watson, Charlotte Museum and Art Gallery of the Northern Territory, Box 4646, Darwin, NT 0801, Australia Author Gunton, Laetitia M. School of the Environment and Life Sciences, University of Portsmouth, King Henry Building, Portsmouth PO 1 2 DY, United Kingdom Author Kupriyanova, Elena K. Australian Museum Research Institute, Australian Museum, 1 William Street, Sydney, NSW 2010, Australia & School of Natural Sciences, Macquarie University, Sydney, NSW 2109, Australia text Records of the Australian Museum 2024 2024-11-27 76 5 249 264 https://doi.org/10.3853/j.2201-4349.76.2024.1905 journal article 10.3853/j.2201-4349.76.2024.1905 2201-4349 14668975 Genus Boudemos Watson et al ., 2016 Type species . Vigtorniella flokati Dahlgren et al ., 2004 . Diagnosis ( from Watson et al. , 2016 emend. ) Very small to moderately large-bodied; length of mature individuals ~ 2 mm for 20 segments to 40 mm for ~ 90 segments, respectively. Eyes present or absent. Pair of stylet jaws present or absent. Notochaetae slender or robust with slight differences in margin serration pattern. Compound falcigerous neurochaetae with bifid joints . Prechaetal neuropodial lobe present in larger species, absent in smaller species. Neurochaetae with swollen inner joint and shallow groove on blades in larger-bodied species; absent in individuals of smaller-bodied species. Remarks. The diagnosis was emended to include the very small-bodied new species with paedomorphic chaetal characters (see Diagnostic Remarks). Bold text indicates characters present in all species of Boudemos . The genus Boudemos was erected for Vigtorniella flokati Dahlgren et al ., 2004 inhabiting whale falls in the Pacific, and V. ardabilia Wiklund et al ., 2009 from a whale fall in Sweden and fish farms in Norway (Watson et al., 2016). These two larger-bodied species are morphologically almost identical, but molecular evidence support their differentiation. The name Vigtorniella was retained for the type species, Vigtorniella zaikai ( Kiseleva, 1992 ) .