dcsimg

Diagnosis

provided by World Register of Marine Species
Original diagnosis by Ditlevsen (1917: 67), for the family Otopsidae: "Forms of medium size with the body of nereidiform or euniciform aspect, consisting of a considerable number of segments. Body somewhat flattened; the dorsal side only a little convex, the ventral side provided with a well marked, rather deep depression extending along the mid-ventral line through about the whole length of the animal. The cephalic lobe is well developed, its longitudinal axis forming about a right angle with the longitudinal axis of the body. Two tentacles (short and thick) are present; in the median line of the cephalic lobe is situated a rather small, unpaired tentacle (possibly a nuchal organ?). Pharynx longitudinally folded; chitinous jaws and paragnaths wanting. The parapodium is well developed, long, muscular and highly movable. Acicles present in two bundles, a ventral, consisting of 3, and a dorsal, consisting of 2 acicles. Dorsal and ventral cirrus developed, lamellifonn. Bristles uncompound, hairy, exceedingly delicate."

Reference

Ditlevsen, Hjalmar. (). Annelids. I. The Danish Ingolf Expedition. (): - + corrigenda, plates I-VI. Copenhagen: H. Hagerup.

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cc-by-4.0
copyright
WoRMS Editorial Board
bibliographic citation
Anonymous. (1999). International Code of Zoological Nomenclature. Fourth edition. <em>International Trust for Zoological Nomenclature; The Natural History Museum: London.</em> i-xxix, 1-306. Rafinesque, C. S. (1815). Analyse de la nature ou Tableau de l'univers et des corps organisés. <em>[Book].</em> 1-224, (self-published) Palermo. Ditlevsen, Hjalmar. (1917). Annelids. I. <em>The Danish Ingolf Expedition.</em> 4(4): 1-71 + corrigenda, plates I-VI. Copenhagen: H. Hagerup. Ditlevsen, Hjalmar. (1917). Annelids. I. <em>The Danish Ingolf Expedition.</em> 4(4): 1-71 + corrigenda, plates I-VI. Copenhagen: H. Hagerup. Ditlevsen, Hjalmar. (1917). Annelids. I. <em>The Danish Ingolf Expedition.</em> 4(4): 1-71 + corrigenda, plates I-VI. Copenhagen: H. Hagerup.
contributor
João Gil [email]