Fig. 1
From: Diuronotus aspetos (Gastrotricha): new morphological data and description of the spermatozoon
External morphology, mouth and buccal cavity of Diuronotus aspetos. a Habitus of an adult specimen; note the secondary tubes (light microscopy). Mouth, buccal cavity and pharynx. (b, c light microscopy; d SEM; e TEM). Note the evident cuticular mouth ring. Twelve couples of stout, double, cuticular processes protrude from the buccal cavity. bc Buccal cavity, cp cuticular processes, ph pharynx, r mouth ring, st secondary tubes. Scale bars a = 42 μm; b, c = 14 μm; d, e = 4 μm