Description A-D, different stages of contraction of the muscular bulb on the female duct (from a live specimen)Author Willems et al., 2005PNG file - 172.81 kB - 466 x 528 pixelsadded on 2017-04-0791 viewsWoRMS taxaScan of photoKaitalugia lydieae Willems, Artois, Backeljau & Schockaert, 2005checked Tyler, Seth 2017-04-07