Plakobranchus papua. Images taken from live animals (external morphology). a Dorsal view, parapodia folded up on the dorsal body surface; arrow shows short yellow rod-like spots along the parapodial border b Dorsal view with detail of the rolled rhinophore indicated by an arrow c Detail of head, rhinophores, and pedal tentacles d Open parapodia with lamellae containing branches of the digestive gland and showing renopericardial area e Ventral view of bilobed oral prominence, narrow foot, and truncated black tail. Scale bars: a, d, e = 10 mm; b, c = 5 mm