. Immature stages of the genus Goliathus: A–C right antenna, dorsal and ventral aspect (A G. albosignatus B G. goliatus C G. orientalis) D–F maxillo-labial complex, dorsal aspect (D G. albosignatus E G. goliatus F G. orientalis) G–I G. albosignatus, mandibles (G left mandible, dorsal and ventral aspects H right mandible, dorsal and ventral aspects I stridulatory area J–L G. goliatus, mandibles (J left mandible, dorsal and ventral aspects K right mandible, dorsal and ventral aspects I stridulatory area. Scale bars: 1 mm.