Figure 6.Cerci and surstyli, dorsal view and surstyli, lateral view. A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium and D Melanostoma mellinum.
Figure 7.Postgonite and anterior part of hypandrium, lateral view. A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium and D Melanostoma mellinum.
Figure 11.Hypandrium, ventral view, shape of postgonites A Melanostoma scalare B Melanostoma certum C Melanostoma mellarium and D Melanostoma mellinum.