FIGURES 24–29 in Sinolethrus, a new subgenus of the genus Lethrus Scopoli, 1777 from China (Coleoptera: Geotrupidae: Lethrinae) and new synonymy of the subgenus Paralethrus Nikolajev, 2003

FIGURES 24–29. Head of Lethrus species with mandibular appendix, keels and hornlike apophyses of mandibles (males), schematically. 24–26 L. (Hetroplistodus) bulbocerus bulbocerus Fischer von Waldheim, 1845 (24 frontal view, 25 lateral view, 26 dorsal view); 27–29 L.(Scelolethrus) sulcatus Kraatz, 1883 (27 fronta view l, 28 lateral view, 29 dorsal view).