Spionidae

Wong, Eunice, Kupriyanova, Elena K., Hutchings, Pat, Capa, María, Radashevsky, Vasily I. & Hove, Harry A. ten, 2014, A graphically illustrated glossary of polychaete terminology: invasive species of Sabellidae, Serpulidae and Spionidae, Memoirs of Museum Victoria 71, pp. 327-342 : 331

hood ( Spionidae ): a thin sheath surrounding the distal dentate end of hooks ( fig. 5b ). N.B., not the same as hood in Sabellidae .

hooded chaetae (preferred term for Sabellidae ): capillary chaetae with hood. N.B., the same as limbate chaetae in Serpulidae .

Figures

Figure 5. (a) Arrows indicate hood on collar chaetae of Laonome triangularis (left 2 images), Laonome calida and thoracic chaetae of Crucigera websteri (SEM image). (b) Arrow indicates hood in neuropodial hooks of Polydora uncinata. (c) Hooks in posterior neuropodia of Polydora uncinata. (d) Radioles proximally connected by inter-radiolar membranes (arrows) in Sabella spallanzanii and Spirobranchus cariniferus (stained with methylene blue). (e) Inter-ramal eyes (arrows) located between notopodia and neuropodia of Branchiomma galei and Branchiomma bairdi. (f) Calcareous tubes of Spirobranchus cariniferus (left) and Spirobranchus kraussii (right); arrows indicate keels on tube. (g) Falcate spines in notopodia of chaetiger 5 of Polydora uncinata; arrow indicates lateral flange. (h) Lobate condition in collars of (left to right, respectively) Spirobranchus cariniferus (stained with methylene blue), Sabella spallanzanii and pygidium of Polydora ciliata (stained with methyl green). Lobes highlighted red. All scales in mm.