Rare, deep-water and similar: revision of Sibogasyrinx (Conoidea: Cochlespiridae)

The genus Sibogasyrinx has to date included only four species of rare deep-water Conoidea, each known from few specimens. In shell characters it strongly resembles three distantly-related genera, two which, Comitas and Leucosyrinx, belong a different family, the Pseudomelatomidae. A molecular phylogenetic analysis large amount material Conoidea revealed existence much additional undescribed diversity within central Indo-Pacific temperate Northern Pacific. Based on partial sequences mitochondrial cox1 gene morphological 54 specimens, 10 hypotheses are proposed, which six described as new species: S. subula sp. nov., lolae maximei clausura pagodiformis nov. elbakyanae Kantor, Puillandre & Bouchet One previously was absent in our material. Most very similar compared Leucosyrinx spp. Species unique among account high intrageneric variability radular morphology. Three distinct radula types found Sibogasyrinx, confined highly supported subclades.