Table 2 in A new genus and species of Polynoidae (Annelida: Polychaeta) from the Canary Islands, and update on taxa present in the Northeast Atlantic

Table 2. Diagnostic generic characters of Webbnesia gen. nov., Hermadion Kinberg, 1856, Antinoe Kinberg, 1856 and Malmgrenia McIntosh, 1874.
Character / GenusWebbnesia gen. nov.HermadionAntinoeMalmgreniaProstomiumCephalic peaksAbsentAbsentAbsentAbsentLateral antennaeVentralVentralTerminoventralTerminoventralParapodiaNotopodiumReducedProminentReducedReducedNeuropodiumElongateElongateElongateElongateNeuropodial supra- acicular processPresent, reducedAbsentPresent (not reduced)Present (not reduced) or absentChaetaeNotochaetaeVery few (2–3), stout with faint rows of spines and entire tipFew, stout with distinct rows of spines and entire tipNumerous, stout with faint rows of spines and entire tipFew, stout or fine, with distinct rows of spines and entire or bidentate tipNeurochaetaeNumerous, stoutNumerous, stoutNumerous, stoutNumerous, stoutwith distinct rows of spines and falcate entire tipwith distinct rows of spines and straight or falcate entire tipwith distinct rows of spines and straight, entire tipwith distinct rows of spines and straight or falcate entire or bidentate tip