Fig. 4
Structure of phallus of a male treated with DDVP. a Whole phallus in polarised light, mph. il-t glows strongly. b Longitudinal section of median area of diverticulum, note lack of any internal muscles. c Longitudinal section of diverticulum in the area of cornuti, the proximal two cornuti have muscle fibres attached, the exocuticle between sockets (red) is thickened. d Cross-section of the vesica, the intrinsic phallic muscle fibres form a sheath around the cuticular ductus ejaculatorius simplex (de). e Detail of c (rotated 90° anticlockwise in relation to c). white arrows muscle fibres, black arrow tendon cells. Scales: a 200 μm, b–d 50 μm, e 20 μm