Oudemos, Watson & Carvajal & Sergeeva & Pleijel & Rouse, 2016

Watson, Charlotte, Carvajal, J. Ignacio, Sergeeva, Nelly G., Pleijel, Fredrik & Rouse, Greg W., 2016, Free-living calamyzin chrysopetalids (Annelida) from methane seeps, anoxic basins, and whale falls, Zoological Journal of the Linnean Society 177 (4), pp. 700-719 : 713-714

B OUDEMOS GEN. NOV

Type species. Vigtorniella flokati Dahlgren et al., 2004 .

Diagnosis. Calamyzinae with small- to moderately large-sized bodies; greatest length 40 mm, segments 91. Eyes present or absent; jaws present or absent. Notochaetae slender or robust, with slight differences in serration pattern. Prechaetal neuropodial lobe present. Distinct swelling on inner falcigerous joint; larger blades with shallow groove.

Remarks. Vigtorniella flokati and V. ardabilia were found not to form a clade with V. zaikai , and so a new genus, Boudemos gen. nov. is erected here for them. Although there was poor support for the clade with the model-based analyses, it was well-supported under MP ( Fig. 2A). Also there are morphological features that support grouping the two species together. Mature individuals of both species are much largerbodied compared with those of Micospina gen. nov. and Vigtorniella . Also, both species have the neurochaetal shaft joint with distinct swelling and neurochaetal blades with a groove ( Table 2). The two taxa otherwise show some differences in eye, jaw, and noto- and neurochaetal characters.

Etymology. Boudemos is a compound name composed of the Greek suffix bou meaning large, enormous, and demos, referring to a living body. The species in the genus have comparatively large bodies and may form an enormous writhing mass when feeding in bacterial mats on whale bones. Gender neutral.

B OUDEMOS FLOKATI GEN. ET COMB. NOV.