FIGURE 4 in New insights into the subterranean genus Speoplanes Müller, 1911 (Coleoptera, Leiodidae, Cholevinae) from the Dinarides

FIGURE 4. Species differentiation for male Speoplanes through the sclerites of the internal sac (right) of the aedeagi (left). Aedeagus of Speoplanes giganteus (A) has compact and curved sclerites, whereas Speoplanes biocovensis (B) has thin and straight internal sac sclerites.