Fig. 5 Enchytraeus albidus s. str. a in The popular model annelid Enchytraeus albidus is only one species in a complex of seashore white worms (Clitellata, Enchytraeidae)

Fig. 5 Enchytraeus albidus s. str. a Internal morphology of segments I– VI and IX–XIV viewed from dorsal side. b Brain. c Bundle of chaetae. d Nephridium. ag accessory glands, as anteseptale, br brain, cl clitellum, nd nephridial efferent duct, ov ovary, pb penial bulb, pg pharyngeal glands (only ventral lobes illustrated), ph pharyngeal pad, ps postseptale, s spermatheca, sf sperm funnel, t testis, vd vas deferens. Scale bars 100 μm